https://scholars.lib.ntu.edu.tw/handle/123456789/356452
Title: | Novel twin reactor for separate evolution of hydrogen and oxygen in photocatalytic water splitting | Authors: | Lo, C.-C. Huang, C.-W. Liao, C.-H. Wu, J.C.S. JEFFREY CHI-SHENG WU |
Keywords: | Hydrogen; Photocatalytic water splitting; Twin reactor; Visible-light-response photocatalyst; Z-scheme | Issue Date: | 2010 | Journal Volume: | 35 | Journal Issue: | 4 | Start page/Pages: | 1523-1529 | Source: | International Journal of Hydrogen Energy | Abstract: | Photocatalytic water splitting with separate H2 and O2 evolution is crucial because it eliminates the explosion potential and hydrogen-purification cost. A novel twin reactor was designed to separate the evolution of hydrogen and oxygen in photocatalytic water splitting under visible light. A modified Nafion membrane was employed to segregate the two photocatalysts in the twin reactor so that hydrogen and oxygen can be evolved separately. Conventional Z-scheme catalysts, Pt/SrTiO3:Rh and WO3, were used as hydrogen-photocatalyst and oxygen-photocatalyst, respectively. Fe2+ and Fe3+ were added in the reaction solution as electron-transfer mediator. The ratio of evolved H2 and O2 was in agreement with the stoichiometric ratio (2:1) of hydrogen and oxygen of water. An average hydrogen generation rate of 1.59 μmol/g-h was achieved in the twin-reactor system, which was twice as much as that in the conventional Z-scheme system. The improved H2 yield was due to the prevention of the water-splitting backward reaction in the twin reactor. © 2009 Professor T. Nejat Veziroglu. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-74449090305&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/356452 |
DOI: | 10.1016/j.ijhydene.2009.12.032 | SDG/Keyword: | Backward reactions; Electron-transfer; Explosion potential; Hydrogen generations; Nafion membrane; Photocatalytic water splitting; Reaction solutions; Reactor systems; Stoichiometric ratio; Twin reactor; Visible light; Visible-light-response; Visible-light-response photocatalyst; Water splitting; Hydrogen production; Oxygen; Rhodium; Separation; Photocatalysts |
Appears in Collections: | 化學工程學系 |
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