An Integrated Photoelectrochemical–Chemical Loop for Solar‐Driven Overall Splitting of Hydrogen Sulfide |
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| Authors: | Xu Zong Jingfeng Han Brian Seger Hongjun Chen Gaoqing Lu Can Li Lianzhou Wang |
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| Institution: | 1. Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD 4072 (Australia);2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian Laboratory for Clean Energy, Dalian 116023 (China) http://www.canli.dicp.ac.cn;3. Graduate University of Chinese Academy of Sciences, Beijing 100049 (China);4. Department of Physics, CINF, Technical University of Denmark, 2800 Kongens Lyngby (Denmark) |
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| Abstract: | Abundant and toxic hydrogen sulfide (H2S) from industry and nature has been traditionally considered a liability. However, it represents a potential resource if valuable H2 and elemental sulfur can be simultaneously extracted through a H2S splitting reaction. Herein a photochemical‐chemical loop linked by redox couples such as Fe2+/Fe3+ and I?/I3? for photoelectrochemical H2 production and H2S chemical absorption redox reactions are reported. Using functionalized Si as photoelectrodes, H2S was successfully split into elemental sulfur and H2 with high stability and selectivity under simulated solar light. This new conceptual design will not only provide a possible route for using solar energy to convert H2S into valuable resources, but also sheds light on some challenging photochemical reactions such as CH4 activation and CO2 reduction. |
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| Keywords: | hydrogen generation H2S splitting photoelectrochemistry solar energy sulfur |
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