Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Monoclinic $ZnBiVO_4$: A photocatalyst for photohydrogen production

모노클리닉 $ZnBiVO_4$: 수소제조용 신규 광촉매

  • Kale, B.B. (Centre For Materials For Electronics Technology(C-MET), Ministry of Information and Technology) ;
  • Bae, Jin-Ook (Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology) ;
  • Moon, Sang-Jin (Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology) ;
  • Chang, Hyun-Ju (Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology) ;
  • Lee, Chul-Wee (Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology)
  • ;
  • 백진욱 (한국화학연구원 화학기술부) ;
  • 문상진 (한국화학연구원 화학기술부) ;
  • 장현주 (한국화학연구원 화학기술부) ;
  • 이철위 (한국화학연구원 화학기술부)
  • Published : 2005.09.15
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Abstract

Zn, Bi 와 V 금속이온 전구체를 사용하여 모노클리닉 결정구조를 갖는 신규 ZnBiVO4 광촉매를 손쉽게 합성 할 수 있는 방법을 개발하였다. 합성된 $ZnBiVO_4$ 광촉매는 XRD 과 FESEM등을 이용하여 미세구조를 분석하였으며, 분석결과 본 삼성분계 금속산화물 반도체 광촉매는 모노클리닉 결정구조를 갖는 것을 알 수 있었다. 저온 수용액방법에 의해 손쉽게 나노 구조를 갖는 $ZnBiVO_4$가 제조되었으며, 그 광촉매의 최소 입자크기는 20-30 nm 이다. $ZnBiVO_4$ 광촉매는 UV-visible DRS (diffuse reflectance spectroscopy)로 그 띠간격(band gap)을 측정하였으며, FT-IR을 사용하여 구조 및 물질 상의 순도를 확인하였다. 그리고 $H_2S$를 광분해하여 수소를 발생하는($122ml/hr{\cdot}g$) 우수한 광촉매 활성을 보여 주었다.

Keywords

References

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