Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Photochemical hydrogen production from coupled semiconductor systems : CdS-WO3/RuO2, CdS-TiO2

혼합반도체 시스템에서의 광화학적 수소제조 : CdS-WO3/RuO2, CdS-TiO2

  • Suh, J.K. (Chemical Analysis Lab., Korea research Institute of Standards and Science) ;
  • Heo, G.S. (Chemical Analysis Lab., Korea research Institute of Standards and Science)
  • 서정기 (한국표준과학연구원 분석화학연구실) ;
  • 허귀석 (한국표준과학연구원 분석화학연구실)
  • Published : 1993.12.31
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Abstract

Hydrogen production in visible light with the following semiconductor systems, $CdS-WO_3$, $CdS-TiO_2$, have been investigated in the presence of redox catalyst (Pt, $RuO_2$). MeOH, EtOH, isopropanol, sulfide/sulfite mixture, lactic acid were used as sacrifical reagents. The optimal condition for $H_2$ evolution was found to be in qgueous lactic acid media for $CdS-WO_3/RuO_2$. The photochemical efficiency for this system was 1.05 % and the $H_2$ evolution rate was 26.5ml/min. at $6.07{\times}10^{-5}$ einstein/sec photon rate

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