Effect of Ag2S on solar-driven photocatalytic hydrogen evolution of nanostructured CdS

Shaohua Shen, Liejin Guo, Xiaobo Chen, Feng Ren, Samuel S. Mao

Research output: Contribution to journalArticlepeer-review

131 Scopus citations

Abstract

Nanostructured Ag2S/CdS were synthesized by a two-step precipitation method, and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-Vis absorption spectra. With Ag 2S highly dispersed in the CdS nanostructures, the photoactivity was evaluated by hydrogen evolution from aqueous solution containing Na 2S/Na2SO3 as a hole scavenger under simulated solar light (AM1.5). When the concentration of Ag2S was 5% by weight, Ag2S/CdS showed the highest photocatalytic activity for hydrogen evolution, with the solar-hydrogen energy conversion efficiency approximately 0.7%. We investigated the effect of highly dispersed Ag2S on the photoactivity.

Original languageBritish English
Pages (from-to)7110-7115
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number13
DOIs
StatePublished - Jul 2010

Keywords

  • AgS/CdS
  • Hydrogen
  • Photocatalytic
  • Solar light

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