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Effect of pH and Temperature on the Electrochemical Reduction of Carbon Dioxide by Carbon Monoxide Dehydrogenase

일산화탄소탈수소화효소를 이용한 이산화탄소의 전기화학적 환원에 미치는 pH와 온도의 영향

  • Shin, Jun-Won (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Kim, You-Sung (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Lee, Sang-Hee (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Lee, Sang-Phil (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Lee, Ho-Jun (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Lim, Mi-Ran (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Song, Ji-Eun (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University) ;
  • Shin, Woon-Sup (Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Inorganic and Bio-Materials Center of BK21, Sogang University)
  • 신준원 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 김유성 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 이상희 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 이상필 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 이호준 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 임미란 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 송지은 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀) ;
  • 신운섭 (서강대학교 화학과, 바이오융합기술 협동과정, BK 무기 및 생체재료사업팀)
  • Published : 2007.11.28

Abstract

The effects of experimental variables for the electrochemical reduction of carbon dioxide by Carbon Monoxide Dehydrogenase (CODH) were investigated. It shows the pH optimum at 6.3 where the feasibility of electro-chemical reduction and the stability of CODH compromise each other. The optimum temperature for the reduction was at $60^{\circ}C$ where the enzyme shows the optimum activity although the solubility of carbon dioxide decreases as increasing temperature.

일산화탄소탈수소화효소를 이용한 이산화탄소의 전기화학적 환원 반응의 최적화를 위해 pH와 온도의 영향을 살펴보았다. pH는 이산화탄소의 환원반응 용이성과 효소의 안정도 효과가 함께 반영되는 6.3에서 최적의 조건을 보였고, 온도는 이산화탄소의 용해도가 적어지더라도 효소의 활성이 가장 좋은 60도에서 최적 조건을 보였다. 일산화탄소탈수소화효소의 안정성 및 활성이 가장 중요한 조건임을 알 수 있었다.

Keywords

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