Electrochemical Oxidation of Sulfur Dioxide on Tin Oxide Thin Film Electrode

산화주석 얇은 막 전극에서의 이산화황 산화반응

  • Jong In Hong (Department of Chemistry, Sogang University) ;
  • Woon Kie Paik (Department of Chemistry, Sogang University) ;
  • Ha Suck Kim (Deparment of Chemistry, Seoul National University)
  • 홍종인 (서강대학교 이공대학 화학과) ;
  • 백운기 (서강대학교 이공대학 화학과) ;
  • 김하석 (서울대학교 자연과학대학 화학과)
  • Published : 1985.04.20


The semiconducting property of Sb-doped tin oxide thin film electrode was investigated and the electrocatalytic effect of this electrode for $SO_2$ (or sulfite, bisulfite ions) oxidation reaction was studied under various conditions. The anodic oxidation of $SO_2$ at tin oxide thin film electrode commenced at lower potential with increasing pH, and good electrocatalytic effect was shown of $SO_3^=$ oxidation in basic solution. In the acidic solutions the electrocatalytic effect of platinum-or palladium-incorporated tin oxide electrode was found to be due to the sites of Pt or Pd exposed on the electrode surface. The electrocatalytic effect of tin oxide electrode was distinctive from that of Pt-or Pd-containing electrodes.



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