Between photocatalysis and photosynthesis: Synchrotron spectroscopy methods on molecules and materials for solar hydrogen generation

Bora, Debajeet K and Hu, Yelin and Thiess, Sebastian and Erat, Selma and Feng, Xuefei and Mukherjee, Sumanta and Fortunato, Giuseppino and Gaillard, Nicolas and Toth, Rita and Gajda-Schrantz, Krisztina and Drube, Wolfgang and Graetzel, Michael and Guo, Jinghua and Zhu, Junfa and Constable, Edwin C. and Sarma, D D and Wang, Hongxin and Braun, Artur (2013) Between photocatalysis and photosynthesis: Synchrotron spectroscopy methods on molecules and materials for solar hydrogen generation. In: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 190 (A, SI). pp. 93-105.

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Abstract

Energy research is to a large extent materials research, encompassing the physics and chemistry of materials, including their synthesis, processing toward components and design toward architectures, allowing for their functionality as energy devices, extending toward their operation parameters and environment, including also their degradation, limited life, ultimate failure and potential recycling. In all these stages, X-ray and electron spectroscopy are helpful methods for analysis, characterization and diagnostics for the engineer and for the researcher working in basic science.This paper gives a short overview of experiments with X-ray and electron spectroscopy for solar energy and water splitting materials and addresses also the issue of solar fuel, a relatively new topic in energy research. The featured systems are iron oxide and tungsten oxide as photoanodes, and hydrogenases as molecular systems. We present surface and subsurface studies with ambient pressure XPS and hard X-ray XPS, resonant photoemission, light induced effects in resonant photoemission experiments and a photo-electrochemical in situ/operando NEXAFS experiment in a liquid cell, and nuclear resonant vibrational spectroscopy (NRVS). (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copyright for this article belongs to the ELSEVIER SCIENCE BV, NETHERLANDS
Keywords:	XAFS; VB-PES; Photoelectrochemistry; Artificial photosynthesis; Valence band; Hole doping; Charge transfer; Solar fuels; Solar hydrogen; Photocatalysis; Resonant photoemission; Photo-electrochemistry; X-ray absorption; RIXS; HAX-PES; AP-XPS; NRVS; Surface defects; Bulk defects; Hydrogenase; Hematite; Tungsten oxide; Water splitting
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	06 Feb 2014 05:37
Last Modified:	06 Feb 2014 05:37
URI:	http://eprints.iisc.ac.in/id/eprint/48313

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