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Surface nanocrystal hydrogen-bonded complex for photochemical water splitting

Paper ID Volume ID Publish Year Pages File Format Full-Text
27647 44035 2008 5 PDF Available
Title
Surface nanocrystal hydrogen-bonded complex for photochemical water splitting
Abstract

Photocatalytic splitting of water in the heterogeneous system consisting of photosensitizer, intermediate electron carrier and catalyst for hydrogen evolution was studied. Molecules and nanocrystals of Mg phthalocyanine were used as photosensitizer; p-benzoquinone served as intermediate electron carrier, and finely dispersed platinum as catalyst for hydrogen evolution. With finely dispersed platinum in the system, the quantum efficiency by the hydrogen formation in the presence of molecules and nanocrystals of the MgPc sensitizer increased by an order of magnitude. It was found that the new adsorption centers are formed on the platinum-modified surface of silicon dioxide (SiO2). Adsorption of sensitizing molecules of Mg phthalocyanine on them increases the lifetime of the excited states of the latter. The luminescence characteristics of the adsorbates of Mg phthalocyanine nanocrystals on SiO2 were studied.

Keywords
Heterogeneous catalysis; Finely dispersed platinum; Photosensitized water splitting; Magnesium phthalocyanine; Magnesium phthalocyanine nanocrystals
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Surface nanocrystal hydrogen-bonded complex for photochemical water splitting
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 196, Issues 2–3, 20 May 2008, Pages 138–142
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us