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

  • 제13권1호
  • /
  • Pages.34-41
  • /
  • 2002
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  • 1738-7264(pISSN)
  • /
  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

수소제조에 관한 박막형 CdS-TiO2 복합 광촉매계의 표면처리 효과

Effect of Surface Treatment of CdS-TiO2 Composite Photocatalysts with Film Type on Hydrogen Production

  • 장점석 (한국화학연구원 정밀 . 생화학공정개발연구센터) ;
  • 소원욱 (한국화학연구원 정밀 . 생화학공정개발연구센터) ;
  • 김광제 (한국화학연구원 정밀 . 생화학공정개발연구센터) ;
  • 문상진 (한국화학연구원 정밀 . 생화학공정개발연구센터)
  • Jang, Jum-Suk (Fine & Bio-chemical Process R&D Center, Korea Research Institute of Chemical Technology) ;
  • So, Won-Wook (Fine & Bio-chemical Process R&D Center, Korea Research Institute of Chemical Technology) ;
  • Kim, Kwang-Je (Fine & Bio-chemical Process R&D Center, Korea Research Institute of Chemical Technology) ;
  • Moon, Sang-Jin (Fine & Bio-chemical Process R&D Center, Korea Research Institute of Chemical Technology)
  • 발행 : 2002.03.30
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초록

CdS and $TiO_2$ nanoparticles were made by the precipitation method and sol-gel method, respectively, and they were mixed mechanically and then treated with the hydrothermal processing. CdS-$TiO_2$ composite particulate films were thus prepared by casting CdS-$TiO_2$ mixed sol onto $SnO_2$ conducting glass and a subsequent heat-treatment at $400^{\circ}C$. Again, the physico-chemical and photoelectrochemical properties of these films were controlled by the surface treatment with $TiCl_4$ aqueous solution. The photocurrents and the hydrogen production rates measured under the present experimental conditions varied in the range of $3.5{\sim}4.5mA/cm^2$ and $0.3{\sim}1.8cc/cm^2$-hr, respectively, and showed the maximum values at the $CdS/[CdS+TiO_2]$ mole ratio of 0.2. Also, the surface treatment with $TiCl_4$ aqueous solution caused a considerable improvement in the photocatalytic activity, Probably as a result of close contacts between the primary particles by the etching effect of $TiCl_4$ It was found that the photoelectrochemical performance of these particulate films could be effectively enhanced by this approach.

키워드

과제정보

연구 과제 주관 기관 : 에너지관리공단

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