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Carbon Nanotube-Based Membrane for Light-Driven, Simultaneous Proton and Electron Transport
journal contribution
posted on 2016-12-07, 00:00 authored by Gregory
A. Pilgrim, Amanda R. Amori, Zhentao Hou, Fen Qiu, Sanela Lampa-Pastirk, Todd D. KraussHere
we discuss the photon-driven transport of protons and electrons
over hundreds of microns through a membrane based on vertically aligned
single-walled carbon nanotubes (SWNTs). Electrons are photogenerated
in colloidal CdSe quantum dots that have been noncovalently attached
to the carbon nanotube membrane and can be delivered at potentials
capable of reducing earth-abundant molecular catalysts that perform
proton reduction. Proton transport is driven by the electron photocurrent
and is shown to be faster through the SWNT-based membrane than through
the commercial polymer Nafion. The potential utility of SWNT membranes
for solar water splitting applications is demonstrated through their
excellent proton and electron transport properties as well as their
ability to interact with other components of water splitting systems,
such as small-molecule electron acceptors.
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- Biophysics
- Biochemistry
- Space Science
- Physical Sciences not elsewhere classified
- Microbiology
- Pharmacology
- Biotechnology
- Environmental Sciences not elsewhere classified
- Chemical Sciences not elsewhere classified
- Ecology
- Astronomical and Space Sciences not elsewhere classified
- Biological Sciences not elsewhere classified
- Information Systems not elsewhere classified
- Inorganic Chemistry
Keywords
SWNT-based membraneCdSe quantum dotspolymer Nafionelectron photocurrentelectron transport propertiessingle-walled carbon nanotubesProton transportSimultaneous ProtonSWNT membranesproton reductionphoton-driven transportwater splitting applicationscarbon Nanotube-Based Membranecarbon nanotube membranewater splitting systemssmall-molecule electron acceptorsElectron Transport
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