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Publications in Peer-Reviewed Journals
1
89. G. Pilatos, A. V. Perdikaki, A. Sapalidis, G. S. Pappas, T. Giannakopoulou, D. Tsoutsou,
E. Xenogiannopoulou, N. Boukos, A. Dimoulas, C. Trapalis, N. K. Kanellopoulos, G. N.
Karanikolos, Graphene by one-step chemical vapor deposition from ferrocene vapors:
Properties and electrochemical evaluation, J. Appl. Phys. 119, 064303 (2016).
http://dx.doi.org/10.1063/1.4941557
(a), (b), and (c) HR-TEM
images indicating few-
layer graphene in different
orientations after growth
at 800 °C for panels (a)
and (b) and at 740 °C for
panel (c). (d) XRD pattern
corresponding to a growth
temperature of 800 °C
revealing peaks attributed
to graphene (26.2° and
22.4°), and Fe-based
phases originating from
the catalyst. (e) and (f)
SEM images of the
sample corresponding to
growth of 800 °C for 1 h.
2
Publications in Peer-Reviewed Journals
88. N. Todorova, T. Giannakopoulou, N. Boukos, E. Vermisoglou, C. Lekakou, C.
Trapalis, Self-propagating solar light reduction of graphite oxide in water, Appl.
Surf. Sci. (2016) in press.
http://dx.doi.org/10.1016/j.apsusc.2016.04.088
87. A. Trapalis, N. Todorova, T. Giannakopoulou, N. Boukos, T. Speliotis, D.
Dimotikali, J. Yu, TiO2/graphene composite photocatalysts for NOx removal: A
comparison of surfactant-stabilized graphene and reduced graphene oxide, Appl.
Catal. B: Environ. 180 (2016) 637-647.
doi:10.1016/j.apcatb.2015.07.009
3
Publications in Peer-Reviewed Journals
86. I. Papailias, T. Giannakopoulou, N. Todorova, D. Demotikali, T. Vaimakis, C. Trapalis,
Effect of processing temperature on structure and photocatalytic properties of g-C3N4, Appl.
Surf. Sci. 358, Part A (2015) 278-286.
http://dx.doi.org/10.1016/j.apsusc.2015.08.097
85. Z. Barbieriková, D. Dvoranová, M.-V. Sofianou, C. Trapalis, V. Brezová, UV-induced
reactions of Mg2+-doped anatase nanocrystals with exposed {0 0 1} facets: An EPR study, J.
Catalysis 331 (2015) 39-48.
http://dx.doi.org/10.1016/j.jcat.2015.08.009
4
Publications in Peer-Reviewed Journals
84. S. Karapati, T. Giannakopoulou, N. Todorova, N. Boukos, D. Dimotikali, C. Trapalis,
Eco-efficient TiO2 modification for air pollutants oxidation, Appl. Catal. B: Environ. 176-177
(2015) 578-585.
http://dx.doi.org/10.1016/j.apcatb.2015.04.012
83. I. Papailias, M. Giannouri, A. Trapalis, N. Todorova, T. Giannakopoulou, N. Boukos, C.
Lekakou, Decoration of crumpled rGO sheets with Ag nanoparticles by spray pyrolysis,
Appl. Surf. Sci. 358 (2015) 84-90.
doi:10.1016/j.apsusc.2015.08.143
5
Publications in Peer-Reviewed Journals
82. E.C. Vermisoglou, T. Giannakopoulou, G. Romanos, M. Giannouri, N. Boukos, C. Lei,
C. Lekakou, C. Trapalis, Effect of hydrothermal reaction time and alkaline conditions on the
electrochemical properties of reduced graphene oxide, Appl. Surf. Sci. 358 (2015) 100-109.
http://dx.doi.org/10.1016/j.apsusc.2015.08.127
81. E.C. Vermisoglou, T. Giannakopoulou, G.E. Romanos, N. Boukos, M. Giannouri, C. Lei,
C. Lekakou, C. Trapalis, Non-activated high surface area expanded graphite oxide for
supercapacitors, Appl. Surf. Sci. 358 (2015) 110-121.
doi:10.1016/j.apsusc.2015.08.123
6
Publications in Peer-Reviewed Journals
80. N. Todorova, T. Giannakopoulou, K. Pomoni, J. Yu, T. Vaimakis, C. Trapalis,
Photocatalytic NOx oxidation over modified ZnO/TiO2 thin films, Catal. Today 252 (2015)
41-46.
http://dx.doi.org/10.1016/j.cattod.2014.11.008
79. T. Georgakopoulos, N. Todorova, K. Pomoni, C. Trapalis, On the transient
photoconductivity behavior of sol–gel TiO2/ZnO composite thin films, J. Non-Cryst. Solids
410 (2015) 135-141.
http://dx.doi.org/10.1016/j.jnoncrysol.2014.11.034
XRD patterns of
the sol–gel
TiO2/ZnO thin
films, heat treated
at 500 °C.
7
Publications in Peer-Reviewed Journals
78. J. Yu, M. Jaroniec, W. Xiao, C. Trapalis, H. Liu, TiO2 Photocatalytic Materials
2014, International Journal of Photoenergy Volume 2015 (2015), Article ID 786562,
2 pages.
http://dx.doi.org/10.1155/2015/786562
77. M.-V. Sofianou, M. Tassi, V. Psycharis, N. Boukos, S. Thanos, T. Vaimakis, J.
Yu, C. Trapalis, Solvothermal synthesis and photocatalytic performance of Mn4+-
doped anatase nanoplates with exposed {0 0 1} facets, Appl. Catal. B: Environ. 162
(2015) 27-33.
http://dx.doi.org/10.1016/j.apcatb.2014.05.049
8
Publications in Peer-Reviewed Journals
76. S. Karapati, , T. Giannakopoulou, N. Todorova, N. Boukos, S. Antiohos, D.
Papageorgiou, E. Chaniotakis, D. Dimotikali, C. Trapalis, TiO2 functionalization for
efficient NOx removal in photoactive cement, Appl. Surf. Sci. 319 (2014) 29-36.
http://dx.doi.org/10.1016/j.apsusc.2014.07.162 Experimental setup for
evaluation of the
photocatalytic activity in
NOx removal from air: (1) NO
cylinder, (2) compressor, (3–
5) gas flow controllers, (6)
humidifier, (7) air mixer, (8)
light irradiation source, (9)
photocatalytic reactor, (10)
analyzer, and (11) PC.
75. E.C. Vermisoglou, E. Devlin, T. Giannakopoulou, G. Romanos, N. Boukos, V. Psycharis,
C. Lei, C. Lekakou, D. Petridis, C. Trapalis, Reduced graphene oxide/iron carbide
nanocomposites for magnetic and supercapacitor applications, J. Alloys Comp. 590 (2014)
102-109.
doi:10.1016/j.jallcom.2013.11.087
9
Publications in Peer-Reviewed Journals
74. J. Yu, C. Trapalis, H. Yu, W. Fan, H. Liu, Nanosized Photocatalytic Materials 2013,
Journal of Nanomaterials Volume 2014 (2014), Article ID 873208, 2 pages.
http://dx.doi.org/10.1155/2014/873208
73. A. Athanasiou, A. Mitsionis, G. Skouras, N. Todorova, C. Trapalis, T. Vaimakis,
Thermogravimetric study of the surfactant-diethanolamine-titanium isopropoxide system
behavior, J. Therm. Anal. Calorim. 116 (2014) 15-25.
DOI 10.1007/s10973-013-3407-6
TG/DSC patterns for OA and TX surfactants
10
Publications in Peer-Reviewed Journals
72. N. Todorova, T. Giannakopoulou, S. Karapati, D. Petridis, T. Vaimakis, C. Trapalis,
Composite TiO2/clays materials for photocatalytic NOx oxidation, Appl. Surf. Sci. 319
(2014) 113-120.
http://dx.doi.org/10.1016/j.apsusc.2014.07.020
71. M.-V. Sofianou, M. Tassi, N. Boukos, S. Thanos, T. Vaimakis, J. Yu, C. Trapalis,
Solvothermal synthesis and photocatalytic performance of Mg2+-doped anatase nanocrystals
with exposed {0 0 1} facets, Catal. Today 230 (2014) 125-130.
http://dx.doi.org/10.1016/j.cattod.2013.11.022
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70. T. Georgakopoulos, M.V. Sofianou, K. Pomoni, C. Trapalis, Electrical conductivity
mechanisms in titania hollow microspheres with dominant {0 0 1} facets, J. Alloys Comp.
586 (2014) 52-58.
http://dx.doi.org/10.1016/j.jallcom.2013.10.031
Publications in Peer-Reviewed Journals
SEM micrographs of
TiO2 anatase hollow
microspheres with
exposed {0 0 1} crystal
facets (a and b).
69. S. Karapati, T. Giannakopoulou, N. Todorova, N. Boukos, S. Antiohos, D. Papageorgiou,
E. Chaniotakis, D. Dimotikali, C. Trapalis, TiO2 functionalization for efficient NOx removal
in photoactive cement, Appl. Surf. Sci. 319 (2014) 29-36.
http://dx.doi.org/10.1016/j.apsusc.2014.07.162
High
resolution
TEM
micrographs
of OA-3, OM-
3 and OAOM-
3 titania
nanoparticles.
12
Publications in Peer-Reviewed Journals
68. A. Athanasiou, A. Mitsionis, T. Vaimakis, P. Pomonis, D. Petrakis, L.
Loukatzikou, N. Todorova, C. Trapalis, S. Ladas, A novel route for the production
of TiO2 photocatalysts with low energy gap, via Triton-X and oleic acid surfactants,
Appl. Surf. Sci. 319 (2014) 143-150.
http://dx.doi.org/10.1016/j.apsusc.2014.06.086
SEM
micrographs of
the
TiO2 materials.
67. M.-V. Sofianou, N. Boukos, T. Vaimakis, C. Trapalis, Decoration of TiO2
anatase nanoplates with silver nanoparticles on the {1 0 1} crystal facets and their
photocatalytic behavior, Appl. Catal. B: Environ. 158-159 (2014) 91-95.
http://dx.doi.org/10.1016/j.apcatb.2014.02.030
13
Publications in Peer-Reviewed Journals
66. T. Giannakopoulou, N. Todorova, M. Giannouri, J. Yu, C. Trapalis, Optical and
photocatalytic properties of composite TiO2/ZnO thin films, Catal. Today 230 (2014) 174-
180.
http://dx.doi.org/10.1016/j.cattod.2013.10.003
65. G. Pilatos, E. C. Vermisoglou, A. Perdikaki, E. Devlin, G. S. Pappas, G. E. Romanos, N.
Boukos, T. Giannakopoulou, C. Trapalis, N. K. Kanellopoulos, G. N. Karanikolos, One-step,
in situ growth of unmodified graphene – magnetic nanostructured composites, Carbon 66
(2014) 467-475.
http://dx.doi.org/10.1016/j.carbon.2013.09.023
(a) SEM image of the
graphene magnetic
material on silicon
after CVD. (b) XRD
pattern identifying the
Fe3C (cementite)
phase. (c), (d) HR-
TEM images showing
graphene layers
around Fe3C. The
inset is a FFT of the
image in panel (c).
Growth was carried
out at 740 °C for 3 h.
14
64. J. Yu, M. Jaroniec, G. Lu, C. Trapalis, G. Liu, TiO2 Photocatalytic Materials 2013,
International Journal of Photoenergy Volume 2013 (2013), Article ID 534164, 2 pages.
http://dx.doi.org/10.1155/2013/534164
Publications in Peer-Reviewed Journals
63. M. Giannouri, Th. Kalampaliki, N. Todorova, T. Giannakopoulou, N. Boukos, D.
Petrakis, T. Vaimakis, C. Trapalis, One-Step Synthesis of TiO2/Perlite Composites by Flame
Spray Pyrolysis and Their Photocatalytic Behavior, International Journal of Photoenergy
Volume 2013 (2013), Article ID 729460, 8 pages.
http://dx.doi.org/10.1155/2013/729460
Schematic of the
flame spray
pyrolysis device.
During spray
procedure and
after evaporation
and combustion of
precursor,
TiO2 nanoparticles
are formed on
perlite substrate.
15
Publications in Peer-Reviewed Journals
62. J.Yu, C. Trapalis, P. Zhang, G. Li, H. Yu, Environmental Photocatalysis 2013,
International Journal of Photoenergy Volume 2013 (2013), Article ID 786806, 3
pages.
http://dx.doi.org/10.1155/2013/786806
61. M.-V. Sofianou, V. Psycharis, N. Boukos, T. Vaimakis, J. Yu, R. Dillert, D.
Bahnemann, C. Trapalis, Tuning the photocatalytic selectivity of TiO2 anatase
nanoplates by altering the exposed crystal facets content, Appl. Catal. B: Environ.
142-143 (2013) 761-768.
doi:10.1016/j.apcatb.2013.06.009
16
Publications in Peer-Reviewed Journals
60. V. Georgakilas, A. Kouloumpis, D. Gournis, A. Bourlinos, C. Trapalis, R. Zboril, Tuning
the Dispersibility of Carbon Nanostructures from Organophilic to Hydrophilic: Towards the
Preparation of New Multipurpose Carbon-Based Hybrids, Chem. A Eur. J 19 (2013) 12884-
12891.
DOI: 10.1002/chem.201301200
59. N. Todorova, T. Vaimakis, D. Petrakis, S. Hishita, N. Boukos, T. Giannakopoulou, M.
Giannouri, S. Antiohos, D. Papageorgiou, E. Chaniotakis, C. Trapalis, N and N,S-doped TiO2
photocatalysts and their activity in NOx oxidation, Catal. Today 209 (2013) 41-46.
doi:10.1016/j.cattod.2012.11.019
17
Publications in Peer-Reviewed Journals
58. K. Pomoni, T. Georgakopoulos, M.V. Sofianou, C. Trapalis, Thermal treatment and
environment effect on transient photoconductivity behavior of anatase TiO2 with dominant {0
0 1} facets, J. Alloys Comp. 558 (2013) 1-5.
http://dx.doi.org/10.1016/j.jallcom.2013.01.019
UV–Vis diffuse reflectance
spectra and in the inset the
absorption spectra of the
TiO2 anatase nanopowders
(a) as prepared, and (b)
calcinated at 600 °C.
57. M. V. Sofianou, T. Vaimakis, C. Trapalis, Study of the Photocatalytic Activity of Anatase
TiO2 Nano-Microstructures with Exposed {001} Facets, Nanosci. Nanotech. Let. 5 (2013)
461-465.
http://dx.doi.org/10.1166/nnl.2013.1556
18
Publications in Peer-Reviewed Journals
56. N. Todorova, T. Vaimakis, T. Giannakopoulou, S. Hishita, A. Griniari, E. Varadas, C.
Trapalis, N- and N, C-Doped TiO2 Powders and Their Visible Light Activity, Nanosci. Nanotech.
Let. 5 (2013) 475-479.
http://dx.doi.org/10.1166/nnl.2013.1565
55. K. Pomoni, M.V. Sofianou, T. Georgakopoulos, N. Boukos, C. Trapalis, Electrical
conductivity studies of anatase TiO2 with dominant highly reactive {0 0 1} facets, J. Alloys
Comp. 548 (2013) 194-200.
http://dx.doi.org/10.1016/j.jallcom.2012.08.136
TEM micrographs of the TiO2 anatase nanoplates, (a) as prepared (b) calcinated at 600 °C.
19
Publications in Peer-Reviewed Journals
54. M. Aslanidou, T. Vaimakis, A. Mitsionis, C. Trapalis, A novel approach on the preparation of
biphasic calcium phosphate bioceramics under physiological conditions. The effect of the starting
material, Ceramics International 39 (2013) 539-546.
http://dx.doi.org/10.1016/j.ceramint.2012.06.060
SEM images of raw samples prepared in pH 7.5 without ageing (a), after 1 day (b) and after 2 day (c).
53. J. Yu, P. Zhang, H. Yu, C. Trapalis, Environmental Photocatalysis, International Journal of
Photoenergy Volume 2012 (2012), Article ID 594214, 4 pages.
http://dx.doi.org/10.1155/2012/594214
20
Publications in Peer-Reviewed Journals
52. M.-V. Sofianou, C. Trapalis , V. Psycharis, N. Boukos, T. Vaimakis, J. Yu, W. Wang, Study of
TiO2 anatase nano and microstructures with dominant {001} facets for NO oxidation, Environ.
Sci. Pollut. Res. 19 (2012) 3719-3726.
DOI 10.1007/s11356-012-0747-x
SEM micrographs of TiO2 anatase nanoplates with {001} crystal facets (a, b) and of TiO2 anatase hollow
microspheres with exposed {001} crystal facets (c, d)
51. T. Giannakopoulou, N. Todorova, G. Romanos, T. Vaimakis, R. Dillert, D. Bahnemann, C.
Trapalis, Composite hydroxyapatite/TiO2 materials for photocatalytic oxidation of NOx, Mater.
Sci. Eng. B 177 (2012) 1046-1052.
http://dx.doi.org/10.1016/j.mseb.2012.05.014
SEM images of TiO2 (a), HT-1 (b), HA (c) samples with magnification 20,000× and HA sample (d) with
magnification 80,000×.
21
Publications in Peer-Reviewed Journals
50. A. Mitsionis, T. Vaimakis, C. Trapalis, N. Todorova, D. Bahnemann, R. Dillert,
Hydroxyapatite/titanium dioxide nanocomposites for controlled photocatalytic NO oxidation,
Appl. Catal. B Environ. 106 (2011) 398-404.
http://dx.doi.org/10.1016/j.apcatb.2011.05.047
49. K. Pomoni, A. Vomvas, N. Todorova, T. Giannakopoulou, K. Mergia, C. Trapalis, Thermal
treatment effect on structure, electrical conductivity and transient photoconductivity behavior of
thiourea modified TiO2 sol–gel thin films, J. Alloys Comp. 509 (2011) 7253-7258.
http://dx.doi.org/10.1016/j.jallcom.2011.03.152
GIXRD patterns of the thiourea modified TiO2 samples, treated at: (a) 400 °C, (b) 500 °C, (c) 600 °C, (d)
800 °C and (e) 1000 °C. The asterisk (*) denotes the anatase Bragg peak positions, and the open circle (o) the
rutile Bragg peak positions.
22
Publications in Peer-Reviewed Journals
48. A. B. Bourlinos, M. A. Karakassides, P. Stathi, Y. Deligiannakis, R. Zboril, P. Dallas, T. A.
Steriotis, A. K. Stubos, C. Trapalis, Pyrolytic formation of a carbonaceous solid for heavy metal
adsorption, J. Mater. Sci. 46 (2011) 975-982.
DOI 10.1007/s10853-010-4854-0
Solid-state pyrolysis of acetylenedicarboxylic acid, monopotassium salt in air results in bulk quantities of the
entitled carbonaceous solid
47. E. C. Vermisoglou, G. E. Romanos, G. N. Karanikolos, N. K. Kanellopoulos, Catalytic NOx
removal by single-wall carbon nanotube-supported Rh nanoparticles, J. Hazard. Mater. 194
(2011) 144-155.
http://dx.doi.org/10.1016/j.jhazmat.2011.07.078
(a) Raman spectra of
pristine and Rh-
decorated SWNTs. (b)
XRD pattern of the
Rh-decorated SWNTs.
(c) Particle dispersion
in the Rh/SWNT
composite. (d) Dark-
field TEM revealing
the Rh crystallites.
High resolution TEM
images of (e) a particle
assembly and (f) a
nanotube bundle
indicating the
existence of SWNTs.
23
Publications in Peer-Reviewed Journals
46. E. C. Vermisoglou, G. Pilatos, G. E. Romanos, E. Devlin, N. K. Kanellopoulos, G. N.
Karanikolos, Magnetic carbon nanotubes with particle-free surfaces and high drug loading
capacity, Nanotechnology Nanotechnology 22 (2011) 355602 (10pp).
http://dx.doi.org/10.1088/0957-4484/22/35/355602(a) Cross-section and
(b) top-view SEM images
of template-free
magCNTs showing
monodisperse and open-
ended nanotubes.
(c) TEM image of a
magCNT showing
particles dispersed
throughout its length.
(d) HR-TEM images of
particles encapsulated
within the tube graphitic
wall. All microscopy
images have been
acquired after prolonged
exposure of the
magCNTs to
concentrated HNO3, in
order to remove any
surface-bound particles.
45. R. Zbořil, F. Karlický, A. B. Bourlinos, T. A. Steriotis, A. K. Stubos, V. Georgakilas, K.
Šafářová, D. Jančík, C. Trapalis, M. Otyepka, Graphene Fluoride: A Stable Stoichiometric
Graphene Derivative and its Chemical Conversion to Graphene, Small 6 (2010) 2885-2891.
DOI: 10.1002/smll.201001401
TEM images (top and bottom
left) of CF sheets obtained after
graphite fluoride exfoliation in
sulfolane. Arrows in the
HRTEM image (top left)
indicate highly transparent
graphene fluoride monolayers.
The SAED pattern (bottom
right) confirms the stoichiometry
and structure of the layers
corresponding to the original
graphite fluoride.
24
Publications in Peer-Reviewed Journals
44. K. Mahmud, A. Mitsionis, T. Vaimakis, N. Kourkoumelis, C. Trapalis, The threonine effect on
calcium phosphate preparation from a solution containing Ca/P = 1.33 molar ratio, Ceramics
International 36 (2010) 1893-1899.
http://dx.doi.org/10.1016/j.ceramint.2010.03.027
SEM micrographs of uncalcined samples of material.
43. D. Šojić, V. Despotović, B. Abramović, N. Todorova, T. Giannakopoulou, C. Trapalis,
Photocatalytic Degradation of Mecoprop and Clopyralid in Aqueous Suspensions of
Nanostructured N-doped TiO2, Molecules 15 (2010) 2994-3009.
http://dx.doi.org/10.3390/molecules15052994
Structures of the pesticides.
25
Publications in Peer-Reviewed Journals
42. V. Georgakilas, A. B. Bourlinos, R. Zboril, T. A. Steriotis, P. Dallas, A. K. Stubos, C.
Trapalis, Organic functionalisation of graphenes, Chem. Commun. 46 (2010) 1766-1768.
DOI: 10.1039/B922081J
41. A. I. Mitsionis, T. C. Vaimakis, C. C. Trapalis, The effect of citric acid on the sintering of
calcium phosphate bioceramics, Ceramics International 36 (2010) 623-634.
doi:10.1016/j.ceramint.2009.09.034
SEM microphotograph of uncalcined samples.
26
Publications in Peer-Reviewed Journals
40. E. C. Vermisoglou, A. Labropoulos, G. E. Romanos, E. Kouvelos, S. Papageorgiou, G. N.
Karanikolos, F. Katsaros, N. K. Kanellopoulos, J. Nanosci. Nanotech. 10 (2010) 5971-5980.
http://dx.doi.org/10.1166/jnn.2010.2610
Hydrogen adsorption isotherms at 25oC, (▲) Pristine SWNTs, (♦)SWNTs/PEG/Pd as produced, (◊)SWNTs/PEG/Pd
after hydrogen loading at 220oC, (o)SWNTs/PEG/Pd after air oxidation at 400oC, Inset: Isotherm at –196oC of
SWNTs/PEG/Pd as produced.
39. G. Pilatos, E. C. Vermisoglou, G. E. Romanos, G. N. Karanikolos, N. Boukos, V. Likodimos,
N.K. Kanellopoulos, A Closer Look Inside Nanotubes: Pore Structure Evaluation of Anodized
Alumina Templated Carbon Nanotube Membranes Through Adsorption and Permeability Studies,
Adv. Funct. Mater. 20 (2010) 2500-2510.
DOI: 10.1002/adfm.200901429
27
Publications in Peer-Reviewed Journals
38. E. C. Vermisoglou, G. N. Karanikolos, G. Pilatos, E. Devlin, G. E. Romanos, C. Veziri, N. K.
Kanellopoulos, Aligned Carbon Nanotubes with Ferromagnetic Behavior, Adv. Mater. 22 (2010)
473-477.
DOI: 10.1002/adma.200901900
37. P. Vitanov, A. Harizanova, T. Ivanova, C. Trapalis, N. Todorova, Sol-gel ZrO2 and ZrO2-Al2O3
nanocrystalline thin films on Si as high-k dielectrics, Mater. Sci. Eng. B Volume 165 (2009) 178-
181.
http://dx.doi.org/10.1016/j.mseb.2009.09.002
XRD spectra of ZrO2 and (ZrO2)x(Al2O3)1−x films, annealed at different temperatures.
28
Publications in Peer-Reviewed Journals
36. A. B. Bourlinos, V. Georgakilas, R. Zboril, T. A. Steriotis, A. K. Stubos, C. Trapalis, Aqueous-
phase exfoliation of graphite in the presence of polyvinylpyrrolidone for the production of water-
soluble graphenes, Solid State Commun. 149 (2009) 2172-2176.
http://dx.doi.org/10.1016/j.ssc.2009.09.018
Top: The Tyndall scattering effect is seen in the left image for the aqueous colloidal dispersion of graphite after
settling and centrifugation (0.1 mg ml−1). The cuvette on the right shows the optical transparency of the same
dispersion. Bottom: Schematic model of PVP-coated graphene.
35. C. Trapalis, J.M. Calderon-Moreno, N. Todorova, V. S. Teodorescu, M. Stoica, M. Nicolescu,
M. Anastasescu, M. Gartner, M. Zaharescu, Nitridation and crystallization of titanium oxynitride
by thermal treatment of TiO2-anatase films in NH3, J. Optoelectron. Advan. Mater. 11 (2009)
1810-1814.
29
Publications in Peer-Reviewed Journals
34. V. Belessi, G. Romanos, N. Boukos, D. Lambropoulou, C. Trapalis, Removal of Reactive Red
195 from aqueous solutions by adsorption on the surface of TiO2 nanoparticles, J. Hazard. Mater.
170 (2009) 836-844.
doi:10.1016/j.jhazmat.2009.05.045
Chemical structure of Reactive Red 195.
33. T. Giannakopoulou, N. Todorova, P. Osiceanu, A. Lagoyannis, T. Vaimakis, C. Trapalis,
Description of TiO2 thin films treated in NH3 atmosphere by optical dispersion models, Thin
Solid Films 517 (2009) 6694-6699.
http://dx.doi.org/10.1016/j.tsf.2009.05.015
The XRD patterns of the prepared films.
30
Publications in Peer-Reviewed Journals
32. G. Dobrescu, M. Anastasescu, M. Stoica, A. Szekeres, N. Todorova, C. Trapalis, M. Gartner,
A fractal analysis of TiO2 sol-gel films treated under different atmospheres, J. Optoelectron. Adv.
Mater. 11 (2009) 1359-1362.
31. C. Trapalis, N. Todorova, M. Anastasescu, C. Anastasescu, M. Stoica, M. Gartner, M.
Zaharescu, T. Stoica, Atomic force microscopy study of TiO2 sol–gel films thermally treated
under NH3 atmosphere, Thin Solid Films 517 (2009) 6243-6247.
doi:10.1016/j.tsf.2009.02.070
3D AFM topography of the TiO2 samples thermally treated at different temperatures under NH3atmosphere: (a) As-
prepared; (b) − 400 C; (c) − 500 C; (d) − 800 C; (e) − 1000 C; (f) RMS roughness of the TiO2 films as a function of
thermal treatment temperature (scale of 4 µm).
31
Publications in Peer-Reviewed Journals
30. T. Giannakopoulou, D. Niarchos, C. Trapalis, Experimental investigation of electric and
magnetic responses in composites with dielectric resonator inclusions at microwave frequencies,
Appl. Phys. Lett. 94 (2009) 242506.
http://dx.doi.org/10.1063/1.3156001
A photograph of the cubes and the toroidal samples with cubic inclusions.
29. V. Georgakilas, P. Dallas, D. Niarchos, N. Boukos, C. Trapalis, Polypyrrole/MWNT
nanocomposites synthesized through interfacial polymerization, Synthetic Metals 159 (2009)
632-636.
doi:10.1016/j.synthmet.2008.12.007
The various stages of the interfacial
polymerization, (upper) with diluted and
(down) with more concentrated mixtures.
(Upper) a: Dispersion of MWNT and
dissolution of pyrrole in chloroform and
ferric ions in water; b: formation of
pyrrole oligomers on the MWNT surface;
c: enlargement of the composites as the
polymerization proceeds; d: the polymer
composite become hydrophilic and pass to
the organic phase; e: in the final stage the
composite in transferred to the interphase.
(Down) f: The first stage with
concentrated MWNT dispersion in
chloroform and g: the final stage with the
formation of the polymer composite in the
interphase.
32
Publications in Peer-Reviewed Journals
28. M. Gartner, C. Anastasescu, M. Zaharescu, M. Enache, L. Dumitru, T. Stoica, T. F. Stoica,
C. Trapalis, The simulation in the real conditions of antibacterial activity of TiO2 (Fe) films with
optimized morphology, Ceram. Eng. Sci. Proc. 29 (2009) 67-76.
27. C. Văcăroiu, M. Enache, M. Gartner, G. Popescu, M. Anastasescu, A. Brezeanu, N. Todorova,
T. Giannakopoulou, C. Trapalis, The effect of thermal treatment on antibacterial properties of
nanostructured TiO2(N) films illuminated with visible light, World J. Microbiol. Biotechnol. 25
(2009) 27-31.
DOI 10.1007/s11274-008-9856-6
AFM analysis of sample 1 (scale: 1 μm) revealing the fine grain (in fact these grains are most probable
anatase crystallites) structure.
33
Publications in Peer-Reviewed Journals
26. E. C. Vermisoglou, G. E. Romanos, V. Tzitzios, G. N. Karanikolos, V. Akylas, A. Delimitis, G.
Pilatos, N.K. Kanellopoulos, Synthesis of nanocrystalline gold–carbon nanotube composites and
evaluation of their sorption and catalytic properties, Microp. Mesop. Mater. 120 (2009) 122-131.
http://dx.doi.org/10.1016/j.micromeso.2008.10.040
(a): Au particle size distribution as-derived from TEM images. (b): TEM image of the Au-decorated SWNTs. (c):
TEM image of the pristine SWNTs.
25. T. Giannakopoulou, N. Todorova, T. Vaimakis, S. Ladas, C. Trapalis, Study of Fluorine-Doped
TiO2TiO2 Sol-Gel Thin Coatings, J. Sol. Energy Eng 130(4) (2008) 041007.
doi:10.1115/1.2969804
34
Publications in Peer-Reviewed Journals
24. M. Ksibi, S. Rossignol, J.-M. Tatibouët, C. Trapalis, Synthesis and solid characterization of
nitrogen and sulfur-doped TiO2 photocatalysts active under near visible light, Mater. Lett. 62
(2008) 4204-4206.
http://dx.doi.org/10.1016/j.matlet.2008.06.026
XRD patterns of the titania powders prepared at 550 °C for 2 h using (a) water only, (b) ammonium hydroxide (c) urea,
(d) thiourea and (e) Methyldibenzothiophene as precipitation reagents compared to Degussa-P25. (A) Anatase; (R) rutile.
23. K. Pomoni, A. Vomvas, C. Trapalis, Electrical conductivity and photoconductivity studies of
TiO2 sol–gel thin films and the effect of N-doping, J. Non- Cryst. Solids 354 (2008) 4448-4457.
http://dx.doi.org/10.1016/j.jnoncrysol.2008.06.069
AFM images of sol–gel derived TiO2 film sintered at 450 °C
35
Publications in Peer-Reviewed Journals
22. M. Gartner, P. Osiceanu, M. Anastasescu, T. Stoica, T.F. Stoica, C. Trapalis, T.
Giannakopoulou, N. Todorova, A. Lagoyannis, Investigation on the nitrogen doping of
multilayered, porous TiO2 thin films, Thin Solid Films 516 (2008) 8184-8189.
doi:10.1016/j.tsf.2008.04.027
XRD spectra of TiO2 and N-doped TiO2 samples.
21. N. Todorova, T. Giannakopoulou, T. Vaimakis, C. Trapalis, Structure tailoring of fluorine-
doped TiO2 nanostructured powders, Mater. Sci. Eng. B 152 (2008) 50-54.
http://dx.doi.org/10.1016/j.mseb.2008.06.019
XRD patterns of F-doped TiO2 powders with fluorine precursor NH4F in atomic ratios: (a) F/T = 10/90 and (b)
F/Ti = 20/80.
36
Publications in Peer-Reviewed Journals
20. V. Georgakilas, A. Bourlinos, D. Gournis, T. Tsoufis, C. Trapalis, A. Mateo-Alonso, M. Prato,
Multipurpose Organically Modified Carbon Nanotubes: From Functionalization to Nanotube
Composites, J. Am. Chem. Soc 130 (2008) 8733-8740.
DOI: 10.1021/ja8002952
19. T. C. Vaimakis, E. D. Economou, C. C. Trapalis, Calorimetric study of dissolution kinetics of
phosphorite in diluted acetic acid, J. Therm. Anal. Cal. 92 (2008) 783-789.
DOI: 10.1007/s10973-007-8025-8
Heat flow rate curves for the dissolution of phosphorite at various temperatures.
37
Publications in Peer-Reviewed Journals
18. N. Todorova, T. Giannakopoulou, G. Romanos, T. Vaimakis, J. Yu, C. Trapalis, Preparation of
Fluorine-Doped TiO2 Photocatalysts with Controlled Crystalline Structure, International Journal
of Photoenergy Volume 2008 (2008), Article ID 534038, 9 pages.
http://dx.doi.org/10.1155/2008/534038
DTA, TG, DTG patterns of undoped (a) and fluorinated (b) titania powders.
17. M. Gartner, C. Trapalis, N. Todorova, T. Giannakopoulou, G. Dobrescu, M. Anastasescu, P.
Osiceanu, A. Ghita, M. Enache, L. Dumitru, T. Stoica, M. Zaharescu, J.Y. Bae, S.-H. Suh,
Doped sol-gel TiO2 films for biological applications, Bull. Korean Chem. Soc. 29 (2008) 1038-
1042.
38
Publications in Peer-Reviewed Journals
16. V. Georgakilas, A. B. Bourlinos, R. Zboril, C. Trapalis, Synthesis, Characterization and
Aspects of Superhydrophobic Functionalized Carbon Nanotubes, Chem. Mater. 20 (2008) 2884-
2886.
DOI: 10.1021/cm7034079
Synthesis Steps for the Perfluorinated CNTs
15. R. Zboril, A. Bakandritsos, M. Mashlan, V. Tzitzios, P. Dallas, C. Trapalis, D. Petridis, One-
step solid state synthesis of capped γ-Fe2O3 nanocrystallites, Nanotechnology 19 (2008) 095602
(8pp).
http://dx.doi.org/10.1088/0957-4484/19/9/095602
(a) TEM micrograph of palm-[γ -Fe2O3] and (b) detail demonstrating the full capping of the particles.
39
Publications in Peer-Reviewed Journals
14. K. Pomoni, A. Vomvas, C. Trapalis, Dark conductivity and transient photoconductivity of
nanocrystalline undoped and N-doped TiO2 sol–gel thin films, Thin Solid Films 516 (2008) 1271-
1278.
http://dx.doi.org/10.1016/j.tsf.2007.05.040
Top view AFM images of sol–gel undoped and N-doped derived TiO2 thin films, heat-treated (a): under
O2atmosphere at 500 °C, (b): under NH3 atmosphere at 500 °C, (d): under O2 atmosphere at 600 °C and (c): under
NH3 atmosphere at 600 °C.
13. E. C. Vermisoglou, G. Pilatos, G. E. Romanos, G. N. Karanikolos, N. Boukos, K. Mertis, N.
Kakizis, N. K. Kanellopoulos, Synthesis and characterisation of carbon nanotube modified
anodised alumina membranes, Microp. Mesop. Mater. 110 (2008) 25-36.
doi:10.1016/j.micromeso.2007.08.001
Cross-sectional SEM image of the CNT modified anodised alumina membrane with pore size 200 nm.
40
Publications in Peer-Reviewed Journals
12. A. Vomvas, K. Pomoni, C. Trapalis, N. Todorova, Photoconductivity in sol-gel TiO2 thin
films with and without ammonia treatment, Mater. Sci. Poland 25 (2007) 809-816.
11. T. Giannakopoulou, N. Todorova, C. Trapalis, T. Vaimakis, Effect of fluorine doping and SiO2
under-layer on the optical properties of TiO2 thin films, Mater. Lett. 61 (2007) 4474-4477.
http://dx.doi.org/10.1016/j.matlet.2007.02.056
XRD patterns of TiO2 films deposited on SL and SiSL substrate from solutions with (F20) and without (F0)
fluorine precursor.
41
Publications in Peer-Reviewed Journals
10. A. B. Bourlinos, V. Georgakilas, N. Boukos, P. Dallas, C. Trapalis, E.P. Giannelis, Silicone-
functionalized carbon nanotubes for the production of new carbon-based fluids, Carbon 45 (2007)
1583-1585.
http://dx.doi.org/10.1016/j.carbon.2007.03.040
Left: liquid texture of the hybrid material at room temperature. Right: the corresponding colloidal dispersion in
toluene (10 mg ml−1).
9. A. B. Bourlinos, A. Bakandritsos, R. Zboril, M. Karakassides, C. Trapalis, Preparation of a
water-dispersible carbon–silica composite derived from a silylated molecular precursor, Carbon
45 (2007) 1108-1111.
http://dx.doi.org/10.1016/j.carbon.2007.02.018
TEM image of the water-dispersible carbon–silica composite. A drop from an aqueous dispersion of the
composite was placed on a copper grid and evaporated prior direct observation.
42
Publications in Peer-Reviewed Journals
8. A. B. Bourlinos, Th. A. Steriotis, M. Karakassides, Y. Sanakis, V. Tzitzios, C. Trapalis, E.
Kouvelos, A. Stubos, Synthesis, characterization and gas sorption properties of a molecularly-
derived graphite oxide-like foam, Carbon 45 (2007) 852-857.
doi:10.1016/j.carbon.2006.11.008
Schematic of the graphite oxide-like foam synthesis by air pyrolysis of the molecular precursor.
7. P. Dallas, D. Niarchos, D. Vrbanic, N. Boukos, S. Pejovnik, C. Trapalis, D. Petridis, Interfacial
polymerization of pyrrole and in situ synthesis of polypyrrole/silver nanocomposites, Polymer 48
(2007) 2007-2013.
http://dx.doi.org/10.1016/j.polymer.2007.01.058
TEM images in various scales showing the dispersion of spherical silver nanoparticles in the polypyrrole matrix.
43
Publications in Peer-Reviewed Journals
6. E. C. Vermisoglou, V. Georgakilas, E. Kouvelos, G. Pilatos, K. Viras, G. Romanos, N. K.
Kanellopoulos, Microp. Mesop. Mater. 99 (2007) 98-105.
doi:10.1016/j.micromeso.2006.07.035
(a) Hydrophilic SWNTs prepared by wrapping of the water–soluble poly (sodium 4-styrene sulfonate) around
SWNTs and (b) organophilic SWNTs developed by forming amide bonds with oleylamine.
5. A. B. Bourlinos, P. Dallas, Y. Sanakis, D. Stamopoulos, C. Trapalis, D. Niarchos, Synthesis and
characterization of a π-conjugate, covalent layered network derived from condensation
polymerization of the 4, 4′-bipyridine-cyanuric chloride couple, Europ. Polym. J. Volume 42
(2006) 2940-2948.
http://dx.doi.org/10.1016/j.eurpolymj.2006.07.025
Schematic illustration of the layered organic covalent network.
44
Publications in Peer-Reviewed Journals
4. C. Trapalis, M. Gartner, M. Modreanu, G. Kordas, M. Anastasescu, R. Scurtu, M. Zaharescu,
Stabilization of the anatase phase in TiO2(Fe3+, PEG) nanostructured coatings, Appl. Surf. Sci.
253,(2006) 367-371.
http://dx.doi.org/10.1016/j.apsusc.2006.06.015
SEM micrograph of three-layered TiO2(Fe3+, 0.278 mol PEG600)/SiO2/glass film: (a) as-deposited one-layer film;
(b) annealed one-layer film; (c and d) annealed three-layer film.
3. J. Yu, H. Yu, B. Cheng, C. Trapalis, Effects of calcination temperature on the microstructures
and photocatalytic activity of titanate nanotubes, J. Mol. Catal. A Chem. 249 (2006) 135-142.
doi:10.1016/j.molcata.2006.01.003
45
Publications in Peer-Reviewed Journals
2. G. C. Koumoulidis, C. C. Trapalis, T. C. Vaimakis, Sintering of hydroxyapatite lath-like
powders, J. Therm. Anal. Cal. 84 (2006) 165-174.
DOI: 10.1007/s10973-005-7210-x
TEM bright field micrographs of HAp ‘lath-like’ particles. The thermal treatment temperatures are indicated. Insert in
5b and c shows the associated selected area electron diffraction pattern verifying that the particles are Hap.
1. C. Trapalis, G. Kordas, P. Osiceanu, A. Ghita, M. Anastasescu, M. Crisan, C. Anastasescu, M.
Zaharescu, Surface Stoichiometry and Structural Properties of Copper-Containing Sol–Gel SiO2
Films, Plasma Process. Polym. 3 (2006) 192-196.
DOI: 10.1002/ppap.200500120