title: Photoreduction of catalytic platinum particles using immobilized multilayers of Photosystem I.
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.
authors.affiliation: Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235-1822, United States.
authors.forename: Gabriel
authors.initials: G
authors.lastname: LeBlanc
authors.forename: Gongping
authors.initials: G
authors.lastname: Chen
authors.forename: G Kane
authors.initials: GK
authors.lastname: Jennings
authors.forename: David E
authors.initials: DE
authors.lastname: Cliffel
mesh_terms: D002384:Catalysis; D004800:Enzymes, Immobilized / Q000737:chemistry / Q000378:metabolism*; D006859:Hydrogen / Q000737:chemistry; D008567:Membranes, Artificial; D010084:Oxidation-Reduction; D010316:Particle Size; D055668:Photochemical Processes; D045331:Photosystem I Protein Complex / Q000737:chemistry / Q000378:metabolism*; D010984:Platinum / Q000737:chemistry*; D011522:Protons; D013499:Surface Properties
chemical_list: D004800:Enzymes, Immobilized; D008567:Membranes, Artificial; D045331:Photosystem I Protein Complex; D011522:Protons; D010984:Platinum; D006859:Hydrogen