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Study on Relation between $H_2$ Evolution and Photoelectrical Properties of Photoanode  

Bae, Sang-Hyun (Dept. of Environ. Engr., Yonsei Univ.)
Kang, Joon-Won (Dept. of Environ. Engr., Yonsei Univ.)
Shim, Eun-Jung (Dept. of Chemistry, Chungnam Nat'l Univ.)
Yoon, Jae-Kyung (Greenhouse Gas Research Center, Fossil Energy & Environment Research Dept., Korea Institute of Energy Research)
Joo, Hyun-Ku (Greenhouse Gas Research Center, Fossil Energy & Environment Research Dept., Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.18, no.3, 2007 , pp. 244-249 More about this Journal
Abstract
The present work considers the concept of enzymatic photoelectrochemical generation of hydrogen through water splitting using a Xe lamp as a source of light. A solar cell was applied to the system in order to shift the level of electrochemical energy of the system, resulting in the rate of hydrogen production at $43\;{\mu}mol/(cm^2{\times}hr)$ in cathodic compartment with an anodized tubular $TiO_2$ electrode(ATTE, $5^{\circ}C$/1hr in 0.5 wt% HF-$650^{\circ}C$/5hr). The trend of the rate of hydrogen production, for the ATTEs with different annealing temperature from $350^{\circ}C$ to $850^{\circ}C$, fairly well coincided with the photoelectrical properties measured by potentiostat. The actual chemical bias through imposition of two electrolytes of different pHs between anode(13.68) and cathode(7.5) was 0.24eV.
Keywords
photoanode$H_2$ production; titania plate; solar cell; valence band; conduction band;
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Times Cited By KSCI : 2  (Citation Analysis)
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