Photocatalytic hydrogen production under visible-light irradiation on (CuAg)0.15In0.3Zn1.4S2 synthesized by precipitation and calcination

Guangshan Zhang, Wen Zhang, John C. Crittenden, Yongsheng Chen, Daisuke Minakata, Peng Wang

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23 Scopus citations

Abstract

This study investigates the photocatalytic hydrogen production over nanosized (CuAg)0.15In0.3Zn1.4S2 photocatalysts prepared via precipitation and calcination. The photocatalysts were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, N2 adsorption-desorption, and UV-Vis absorption spectroscopy. The results show that calcination temperature and time significantly influence the crystallinity, specific surface area, and visible-light absorption capacity of the photocatalysts. The photocatalyst activity was studied under visible-light irradiation with KI as the electron donor. The results indicate that the (CuAg)0.15In0.3Zn1.4S2 photocatalyst prepared at a calcination temperature of 600°C for 5 h yields the highest photocatalytic activity (H2 production rate of 1750 μmol g-1 h-1 and quantum yield of 12.8% at 420 ± 5 nm), approximately 6 times larger than that of catalysts prepared without thermal treatment.

Original languageEnglish (US)
Pages (from-to)1926-1935
Number of pages10
JournalCuihua Xuebao/Chinese Journal of Catalysis
Volume34
Issue number10
DOIs
StatePublished - Oct 2013

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Keywords

  • Calcination
  • Hydrogen production
  • Multicomponent metal sufide
  • Photocatalyst
  • Photocatalytic activity
  • Visible light

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