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Volume 176, 2014
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Inorganic core–shell assemblies for closing the artificial photosynthetic cycle

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Abstract

Co oxide (Co 3O 4) nanotubes are shown to act as an efficient water oxidation catalyst when driven with a visible light sensitizer (pH 7). The nanotubes form the core of a Co 3O 4–SiO 2 core–shell nanotube design for separating the carbon dioxide photoreduction from the oxygen evolution reaction. Amorphous dense phase silica of a few nanometers depth is shown to conduct protons while blocking molecular oxygen. Organic molecular wires embedded in the silica shell provide controlled charge transport between the light absorber on one side and the Co 3O 4 catalyst on the other side. Hence, the silica shell is suitable as a membrane of an assembly for closing the photosynthetic cycle on the nanometer scale under product separation.

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Submitted
11 Jul 2014
Accepted
11 Aug 2014
First published
12 Aug 2014

Faraday Discuss., 2014,176, 233-249
Article type
Paper

Inorganic core–shell assemblies for closing the artificial photosynthetic cycle

G. Yuan, A. Agiral , N. Pellet , W. Kim and H. Frei, Faraday Discuss., 2014, 176, 233
DOI: 10.1039/C4FD00150H

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