SET Proceedings 2978-4387 Caravel Press 10.65582/set.2008.108 2008.108 Light-sensitized Enzymatic Hydrogen Evolution in Photoelectrochemical Configuration JooHyunku hkjoo@kier.re.kr YoonJaekyung BaeSanghyun baesanghyun@gmail.com ShimEunjung jung7874@nate.com Korea Institute of Energy Research, Daejeon, Rep. of Korea Yonsei University, Wonju, Rep. of Korea Chungam Nat’l University, Daejeon, Rep. of Korea 24082008 7 1 978-1-995850-08-5 825 829 24 August 2008 © 2008 Copyright WSSET 2008

This study introduces the photoelectrochemical (PEC) system for enzymatic hydrogen evolution by a light-sensitized photoanode and addresses the role of anodized tubular TiO2 electrodes (ATTE) both as a photoanode and a cathode in the system. The enzyme is immobilized on the cathodic ATTE increasing the rate of hydrogen evolution from 65 to 140 μmol/(cm²×hr). The enzyme exposed to air for even 3 weeks showed a hydrogen evolution rate that was 85.8% of that of the argon-purged enzyme. Further research has kept on designing a flat type reactor, enlarged electrode and the optimization of immobilized enzyme and red-shifted light absorption of the photoanode.

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