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Catalysis of Interfacial Transfer of Photo-Generated Electrons (Paperback) Loot Price: R1,268
Discovery Miles 12 680
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Catalysis of Interfacial Transfer of Photo-Generated Electrons (Paperback): Donald Wycoff

Catalysis of Interfacial Transfer of Photo-Generated Electrons (Paperback)

Donald Wycoff

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Loot Price R1,268 Discovery Miles 12 680 | Repayment Terms: R118 pm x 12*

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Four related trimeric molybdenum-sulfur complex ions were examined as electron transfer catalysts in the reduction of water and acetylene by UV sensitized colloidal TiO2 using polyvinyl alcohol and or methanol as sacrificial electron donors. The four ions Mo3S4(OH2)9]4+, Mo3FeS4(OH2)10]4+, Mo3NiS4(OH2)10]4+ and Mo3S4(CN)9]5- had quantum yields under low light conditions, at 313 nm, of 6.6, 4.7, 2.4 and 7.2% respectively. The pH dependence of the rate of product formation for each was found. Loading and light intensity effects were also studied. Light intensity results were interpreted in terms of a model which incorporates the heterogeneity of the surface hole trapping sites. In the acidic region a catalyst-colloid association for the Mo3S4(OH2)9]4+ ion and for the Mo3S4(CN)9]5- ion was demonstrated. The dependence of electron transfer rates on hole scavenger concentration was shown. Platinum catalyst experiments and control experiments without added catalyst were also done. The aquo, cyano and platinum catalysts all appear to be limited by the rate of hole transfer, and their relative effectiveness can not be distinguished.

General

Imprint: Lap Lambert Academic Publishing
Country of origin: Germany
Release date: November 2010
First published: November 2010
Authors: Donald Wycoff
Dimensions: 229 x 152 x 9mm (L x W x T)
Format: Paperback - Trade
Pages: 148
ISBN-13: 978-3-8433-6732-5
Categories: Books > Science & Mathematics > Chemistry
Books > Science & Mathematics > Chemistry > Inorganic chemistry
Books > Science & Mathematics > Chemistry > Inorganic chemistry > General
LSN: 3-8433-6732-9
Barcode: 9783843367325

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