Photocatalytic H2O2 Production from Ethanol/O2 System Using TiO2 Loaded with Au鈥揂g Bimetallic Alloy Nanoparticles

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• 作者：Daijiro Tsukamoto ; Akimitsu Shiro ; Yasuhiro Shiraishi ; Yoshitsune Sugano ; Satoshi Ichikawa ; Shunsuke Tanaka ; Takayuki Hirai
• 刊名：ACS Catalysis
• 出版年：2012
• 出版时间：April 6, 2012
• 年：2012
• 卷：2
• 期：4
• 页码：599-603
• 全文大小：315K
• 年卷期：v.2,no.4(April 6, 2012)
• ISSN：2155-5435

文摘

TiO₂ loaded with Au鈥揂g bimetallic alloy particles efficiently produces H₂O₂ from an O₂-saturated ethanol/water mixture under UV irradiation. This is achieved via the double effects created by the alloy particles. One is the efficient photocatalytic reduction of O₂ on the Au atoms promoting enhanced H₂O₂ formation, due to the efficient separation of photoformed electron鈥揾ole pairs at the alloy/TiO₂ heterojunction. Second is the suppressed photocatalytic decomposition of formed H₂O₂ due to the decreased adsorption of H₂O₂ onto the Au atoms.

Keywords:

photocatalysis; titanium dioxide; nanoparticle; alloy; hydrogen peroxide