9783843367325 - catalysis of interfacial transfer of photo-generated electrons: a study of four mo-s complex ions mediating electron transfer across a colloidal tio2 semiconductor-liquid interface de wycoff, donald (8 resultados)
Idioma: Inglés
Editorial: VDM Verlag Dr. Mueller Aktiengesellschaft & Co. KG, 2010
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Condición: New. pp. 148.
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Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -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 electro…n 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. 148 pp. Englisch.
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Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Wycoff DonaldDonald E. Wycoff was born in St. Louis, Missouri, USA in 1949. He received a BA in chemistry in 1974, MS in inorganic chemistry in 1988 and PhD in inorganic chemistry in 2004, all at the Un…iversity of Missouri in Columb.
Idioma: Inglés
Editorial: VDM Verlag Dr. Mueller Aktiengesellschaft & Co. KG, 2010
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Condición: New. Print on Demand pp. 148 2:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on Creme w/Gloss Lam.
Idioma: Inglés
Editorial: VDM Verlag Dr. Mueller Aktiengesellschaft & Co. KG, 2010
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Librería: Biblios, frankfurt am main, HESSE, AlemaniaBiblios
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Condición: New. PRINT ON DEMAND pp. 148.
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Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -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 do…nors. 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.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 148 pp. Englisch.
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Librería: AHA-BUCH GmbH, Einbeck, AlemaniaAHA-BUCH GmbH
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Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - 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 don…ors. 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.
