A CdS-modified TiO2 nanocrystalline photoanode for efficient hydrogen generation by visible light

Ching Fa Chi, Yuh Lang Lee, Huang Shan Weng

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

Cadmium sulfide (CdS) was in situ synthesized onto mesoporous TiO 2 films and used as a sensitizer to fabricate a photoelectrode for hydrogen generation in visible light. The incorporation of CdS extends the optical absorption threshold of a TiO2 electrode to visible light, enhancing the visible-light-induced photocurrent. A maximum photoconversion efficiency of 3.67% was achieved for this CdS-sensitized TiO2 electrode under visible light illumination of 100 mW cm-2. The hydrogen generation rate obtained at conditions of maximum efficiency is 95.5 μmol cm-2 h-1. To the best of our knowledge, the hydrogen generation rate is the highest among those reported for a photoelectrochemical cell under the illumination of visible light.

Original languageEnglish
Article number125704
JournalNanotechnology
Volume19
Issue number12
DOIs
Publication statusPublished - 2008 Mar 26

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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