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Photoreduction of catalytic platinum particles using immobilized multilayers of Photosystem I
Gabriel LeBlanc1, Gongping Chen, G Kane Jennings
1Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235-1822, United States.
Abstract:
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 H(2)/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.
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