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Catalytic Nanoarchitectures--the Importance of Nothing and the Unimportance of Periodicity
Debra R. Rolison
Heterogeneous catalysis has always been an inherently nanoscopic
phenomenon with important technological and societal consequencesfor
energy conversion and the production of chemicals. New opportunitiesfor improved performance arise when the multifunctionality inherentin
catalytic processes, including molecular transport of reactantsand
products, is rethought in light of architectures designedand
fabricated from the appropriate nanoscale building blocks,including
the use of "nothing" (void space) and deliberate disorderas design
components. Architectures with all of the appropriateelectrochemical
and catalytic requirements, including large surfaceareas readily
accessible to molecules, may now be assembled onthe benchtop.
Designing catalytic nanoarchitectures that departfrom the hegemony of
periodicity and order offers the promiseof even higher activity.
Advanced Electrochemical Materials Section, Naval Research
Laboratory, Code 6171, Washington, DC 20375, USA. E-mail:
rolison{at}nrl.navy.mil
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