Photoreduction of Catalytic Platinum Particles Using Immobilized Multilayers of Photosystem I

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• 作者：Gabriel LeBlanc ; Gongping Chen ; G. Kane Jennings ; David E. Cliffel
• 刊名：Langmuir
• 出版年：2012
• 出版时间：May 29, 2012
• 年：2012
• 卷：28
• 期：21
• 页码：7952-7956
• 全文大小：260K
• 年卷期：v.28,no.21(May 29, 2012)
• ISSN：1520-5827

文摘

Using the abundance of available electrons generated by immobilized multilayers of the photoactive protein complex Photosystem I (PSI), we have photoreduced platinum particles that are catalytically active for the H₂/H⁺ redox couple. The resulting platinized PSI films were optimized using electrochemical measurements and then characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and scanning electrochemical microscopy (SECM). These results demonstrate a novel method for generating immobilized platinum catalysts that are readily available on the surface of a photoactive PSI multilayer.