nanotech 3567

10
Nanotechnology Nanotechnology for the for the Environment Environment Tina Masciangioli AAAS Environmental Science and Technology Policy Fellow National Center for Environmental Research (NCER) USEPA

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nanotech

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nanoscience and
This is likely to change the
way almost everything - from
vaccines to computers to
yet imagined - is designed
hat !aterials are used
+anuacturing processes in"ol"ed# 
$ What aste is produced
!anuacturing o nano-&y'
$ What happens hen nano-&y' gets
into the air, soil, ater, or iota
 
 
7uantu! dots
to reco"er the
7uantu! dots or
the negati"e i!pact 7uantu!
dots (or other nanotechnologies)
*d0 *d0
*d0 *d0
future! it will need to
employ innovative
approaches and
 
 
!aterials#
Nanotechnology for
pollution prevention 
!ini!al production o resultant
in ti!e#3
tracking to !anage recycling,
disposal o sol"ents#
dia!eter#
Biomolecular nanolithography
 J. E. Hutchison and coworkers, Superlattices and Microstructures, Vol. 00, No. 0,2000
:µ!
 iopoly!er te!plate or scaold
stretched out on a surace#
$  Nanostructures are organi'ed into
as lines and grids#
che!icals that are har!ul to the
en"iron!ent#
!ade that de!onstrate stale, roo!-
te!perature electrical eha"ior that
in uilding nanoscale circuits#
and clean$# of #oll$tion
!any years#
inorganic en"iron!ental conta!inants#
other !etals (=e5;d)> on the nanoscale#
 Nano =e< is !ore reacti"e and eecti"e
than the !icroscale#
 penetrates diicult to access areas#
> Elliot and ?hang ES&T  2001, 35, @9//-@9/A
 
 Ba!at, ;#C, et al# J.Phys.Chem. B 2002, 106 ,D-D9@#
 Nanosi'ed 'inc o&ide (?nF)
senses3 organic pollutants
e!ission signal#
the energy-consu!ing o&idation
 pollutants present#
or! !ore en"iron!entally
or en"iron!ental applications#
film as a sensor and #hotocatalyst
.<< n!
8C
cantile"er, causes a change in surace
stress, cantile"er ends#
I4+--4erger et al#, 0cience 199D Hune /D /DAJ /</1-/</@
!ingle Molecule $etection
a speciic reaction eteen analyte
and sensor layer or
 Need to e
ultra sensiti"e#
real ti!e#
needed that oer ne capailities to pre"ent or
treat highly to&ic or persistent pollutants, and
that result in the !ore eecti"e !onitoring o
 pollutants or their i!pact in ays not currently
 possile#
i!pro"e!ent o technologies or en"iron!ental
 protection# The recent reakthroughs in creating
nanocircuitry, gi"e urther e"idence and support
the predictions that nanoscale science and
engineering ill !ost likely produce the
 reakthroughs o to!orro#3
in the en"iron!ent) need to e considered as e
consider nano or the en"iron!ent#