Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Anodization of $TiO_2$ with Seawater Electrolyte; Evaluation of Hydrogen Production in PEG and Photocatalytic Cr(VI) Reduction

해수전해질을 이용한 양극산화 $TiO_2$ 제조; 광전기화학적 수소제조 및 Cr(VI) 환원처리 연구

  • Shim, Eun-Jung (Hydrogen Energy Research Center, Korea Insitute of Energy Research) ;
  • Park, Min-Sung (Dept. of Chemical and Biomolecular Engineering, Yonsei Univ.) ;
  • Her, A-Young (Dept. of Chemical and Biomolecular Engineering, Yonsei Univ.) ;
  • Joo, Hyun-Ku (Hydrogen Energy Research Center, Korea Insitute of Energy Research) ;
  • Yoon, Jae-Kyung (Hydrogen Energy Research Center, Korea Insitute of Energy Research)
  • 심은정 (한국에너지기술연구원 수소에너지연구센터) ;
  • 박민성 (연세대학교 화공생명공학과) ;
  • 허아영 (연세대학교 화공생명공학과) ;
  • 주현규 (한국에너지기술연구원 수소에너지연구센터) ;
  • 윤재경 (한국에너지기술연구원 수소에너지연구센터)
  • Published : 2009.10.31
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Abstract

The present works were performed that titanium foil was anodized in various dilution ratios of seawater and distilled water with 10V external voltage applied, then annealed at $450^{\circ}C$ to obtain $TiO_2$ on the Ti substrate. The prepared samples were characterized by instruments (XRD, SEM, and photocurrent) and used to investigate rate of hydrogen production in photoelectrochemical cell as well as Cr(VI) reduction. As the results of experiments, the anodized $TiO_2$ in seawater electrolytes, which are ranged from 15 to 50 times dilution of seawater, was showed a relatively higher hydrogen production (ca. 97~110 umol/hr-$cm^2$) and Cr(VI) reduction (ca. 95% reduction).

Keywords

References

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