An Integrated Photoelectrochemical-Chemical Loop for Solar-Driven Overall Splitting of Hydrogen Sulfide

Xu Zong, Jingfeng Han, Brian Seger, Hongjun Chen, Gaoqing (Max) Lu, Can Li, Lianzhou Wang

Research output: Contribution to journalJournal articleResearchpeer-review

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 H-2 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-/I-3(-) for photoelectrochemical H-2 production and H2S chemical absorption redox reactions are reported. Using functionalized Si as photoelectrodes, H2S was successfully split into elemental sulfur and H-2 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.
Original languageEnglish
JournalAngewandte Chemie International Edition
Volume53
Issue number17
Pages (from-to)4399-4403
Number of pages5
ISSN1433-7851
DOIs
Publication statusPublished - 2014

Keywords

  • Chemistry
  • PHOTOCATALYTIC H-2 EVOLUTION
  • VISIBLE-LIGHT IRRADIATION
  • THERMAL-DECOMPOSITION
  • ENERGY-CONVERSION
  • NONTHERMAL-PLASMA
  • LIQUID-AMMONIA
  • Sulfur
  • H2S
  • Generation
  • Suspensions
  • H2S splitting
  • photoelectrochemistry
  • Carbon dioxide
  • Conceptual design
  • Electrochemistry
  • Hydrogen production
  • Hydrogen sulfide
  • Photochemical reactions
  • Redox reactions
  • Solar energy
  • Sulfur determination
  • Chemical absorption
  • Hydrogen generations
  • Photo-electrochemistry
  • Photoelectrochemicals
  • Simulated solar light
  • Simultaneous extractions
  • Splitting reactions
  • Iodine

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