An integrated photoelectrochemical-chemical loop for solar-driven overall splitting of hydrogen sulfide

Zong, Xu, Han, Jingfeng, Seger, Brian, Chen, Hongjun, Lu, Gaoqing (Max), Li, Can and Wang, Lianzhou (2014) An integrated photoelectrochemical-chemical loop for solar-driven overall splitting of hydrogen sulfide. Angewandte Chemie - International Edition, 53 17: 4399-4403. doi:10.1002/anie.201400571


Author Zong, Xu
Han, Jingfeng
Seger, Brian
Chen, Hongjun
Lu, Gaoqing (Max)
Li, Can
Wang, Lianzhou
Title An integrated photoelectrochemical-chemical loop for solar-driven overall splitting of hydrogen sulfide
Journal name Angewandte Chemie - International Edition   Check publisher's open access policy
ISSN 1433-7851
1521-3773
Publication date 2014-04-22
Year available 2014
Sub-type Article (original research)
DOI 10.1002/anie.201400571
Open Access Status Not Open Access
Volume 53
Issue 17
Start page 4399
End page 4403
Total pages 5
Place of publication Weinheim, Germany
Publisher Wiley-VCH Verlag
Language eng
Subject 1600 Chemistry
1503 Business and Management
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 Fe 2+/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. Trash to Treasure: A photochemical-chemical loop for the overall H2S splitting was developed by integrating photoelectrochemical H2 production and H2S chemical absorption redox reactions with the link of a redox couple (Fe2+/Fe3+ or I-/I3 -). Using functionalized silicon as photoelectrode, simultaneous extraction of H2 and elemental sulfur from H2S was successfully achieved (see picture).
Keyword Hydrogen generation
Photoelectrochemistry
Solar energy
Sulfur
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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