Gas phase photocatalytic water splitting with Rh2−yCryO3/GaN:ZnO in μ-reactors

Fabio Dionigi; Peter C. K. Vesborg; Thomas Pedersen; Ole Hansen; Søren Dahl; Anke Xiong; Kazuhiko Maeda; Kazunari Domen; Ib Chorkendorff

doi:10.1039/C1EE01242H

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Gas phase photocatalytic water splitting with Rh_2−yCr_yO₃/GaN:ZnO in μ-reactors†

Fabio Dionigi,^a Peter C. K. Vesborg,^a Thomas Pedersen,^b Ole Hansen,^ab Søren Dahl,^a Anke Xiong,^c Kazuhiko Maeda,‡^c Kazunari Domen^c and Ib Chorkendorff*^a

Author affiliations

* Corresponding authors

^a CINF, Department of Physics, Technical University of Denmark, DTU, Building 312, Fysikvej, Kgs. Lyngby, Denmark
E-mail: ibchork@fysik.dtu.dk

^b Department of Micro- and Nanotechnology, Nanotech, Technical University of Denmark, DTU, Building 345 East, Kgs. Lyngby, Denmark

^c Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Abstract

Rh_2−yCr_yO₃/GaN:ZnO has been tested for gas phase overall photocatalytic water splitting by dosing water vapor. The sample has been deposited in a μ-reactor and evolves hydrogen and oxygen under illumination of solar light. This experiment proves the possibility to study solar active materials and the mechanism of the water splitting reaction with gas phase experiments. The high impact of the relative humidity on the activity has been shown by changing the water partial pressure and the reactor temperature.

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Article information

DOI: https://doi.org/10.1039/C1EE01242H
Article type: Paper
Submitted: 28 Feb 2011
Accepted: 26 Apr 2011
First published: 26 May 2011

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Energy Environ. Sci., 2011,4, 2937-2942

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Gas phase photocatalytic water splitting with Rh_2−yCr_yO₃/GaN:ZnO in μ-reactors

F. Dionigi, P. C. K. Vesborg, T. Pedersen, O. Hansen, S. Dahl, A. Xiong, K. Maeda, K. Domen and I. Chorkendorff, Energy Environ. Sci., 2011, 4, 2937 DOI: 10.1039/C1EE01242H

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