Photoreduction of catalytic platinum particles using immobilized multilayers of Photosystem I.

LeBlanc G, Chen G, Jennings GK, Cliffel DE
Langmuir. 2012 28 (21): 7952-6

PMID: 22577992 · DOI:10.1021/la301019t

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.

MeSH Terms (11)

Catalysis Enzymes, Immobilized Hydrogen Membranes, Artificial Oxidation-Reduction Particle Size Photochemical Processes Photosystem I Protein Complex Platinum Protons Surface Properties

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