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Title: Decomposition of the molecular precursor Bu{sub 4}Sn{sub 6}S{sub 6} on the surface of TiO{sub 2} to prepare semiconductor composite photocatalysts

Abstract

In this work, the single source organometallic precursor Bu{sub 4}Sn{sub 6}S{sub 6} was impregnated and decomposed on the surface of TiO{sub 2} to produce semiconductor composites. {sup 119}Sn Moessbauer, Raman and ultra violet/visible spectroscopies, powder X-ray diffraction, temperature programmed reduction and surface area suggest for Sn contents of 1, 5 and 10 wt%, the formation of a highly dispersed unstable SnS phase which is readily oxidized by air at room temperature to form SnO{sub 2} on the TiO{sub 2} surface. The composite with Sn 30 wt% produced a mixture with the phases SnS/{gamma}-Sn{sub 2}S{sub 3} and SnO{sub 2}. Photocatalytic experiments with the composites SnX{sub n}/TiO{sub 2} using the textile dye Drimaren red as a probe molecule showed a first-order reaction with rate constants k{sub absorbance} for the composites with Sn 1 and 5% higher than pure TiO{sub 2} which was explained by the formation of the more active photocatalyst composite SnO{sub 2}/TiO{sub 2}.

Authors:
 [1];  [2];  [3];  [4];  [1]
  1. Departamento de Quimica, ICEx, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG (Brazil)
  2. Fundacao Centro Tecnologico de Minas Gerais-CETEC, 31170-000 Belo Horizonte, MG (Brazil)
  3. Laboratorio de Fisica Aplicada, Centro de Desenvolvimento da Tecnologia Nuclear-CDTN, 30123-970 Belo Horizonte, MG (Brazil)
  4. Departamento de Ciencias Exatas, Universidade Federal de Alfenas, 37130-000 Alfenas, MG (Brazil)
Publication Date:
OSTI Identifier:
22202548
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 45; Journal Issue: 2; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DECOMPOSITION; ORGANOMETALLIC COMPOUNDS; PHOTOCATALYSIS; POWDERS; PRECURSOR; REACTION KINETICS; SEMICONDUCTOR MATERIALS; SPECTROSCOPY; SURFACE AREA; SURFACES; TIN 119; TIN OXIDES; TIN SULFIDES; TITANIUM OXIDES; X-RAY DIFFRACTION

Citation Formats

Silva, Ana C.B., Costa, Vilma C., Ardisson, Jose D., Magalhaes, Fabiano, Lago, Rochel M., E-mail: rochel@ufmg.br, and Sansiviero, Maria T.C. Decomposition of the molecular precursor Bu{sub 4}Sn{sub 6}S{sub 6} on the surface of TiO{sub 2} to prepare semiconductor composite photocatalysts. United States: N. p., 2010. Web. doi:10.1016/J.MATERRESBULL.2009.09.022.
Silva, Ana C.B., Costa, Vilma C., Ardisson, Jose D., Magalhaes, Fabiano, Lago, Rochel M., E-mail: rochel@ufmg.br, & Sansiviero, Maria T.C. Decomposition of the molecular precursor Bu{sub 4}Sn{sub 6}S{sub 6} on the surface of TiO{sub 2} to prepare semiconductor composite photocatalysts. United States. https://doi.org/10.1016/J.MATERRESBULL.2009.09.022
Silva, Ana C.B., Costa, Vilma C., Ardisson, Jose D., Magalhaes, Fabiano, Lago, Rochel M., E-mail: rochel@ufmg.br, and Sansiviero, Maria T.C. Mon . "Decomposition of the molecular precursor Bu{sub 4}Sn{sub 6}S{sub 6} on the surface of TiO{sub 2} to prepare semiconductor composite photocatalysts". United States. https://doi.org/10.1016/J.MATERRESBULL.2009.09.022.
@article{osti_22202548,
title = {Decomposition of the molecular precursor Bu{sub 4}Sn{sub 6}S{sub 6} on the surface of TiO{sub 2} to prepare semiconductor composite photocatalysts},
author = {Silva, Ana C.B. and Costa, Vilma C. and Ardisson, Jose D. and Magalhaes, Fabiano and Lago, Rochel M., E-mail: rochel@ufmg.br and Sansiviero, Maria T.C.},
abstractNote = {In this work, the single source organometallic precursor Bu{sub 4}Sn{sub 6}S{sub 6} was impregnated and decomposed on the surface of TiO{sub 2} to produce semiconductor composites. {sup 119}Sn Moessbauer, Raman and ultra violet/visible spectroscopies, powder X-ray diffraction, temperature programmed reduction and surface area suggest for Sn contents of 1, 5 and 10 wt%, the formation of a highly dispersed unstable SnS phase which is readily oxidized by air at room temperature to form SnO{sub 2} on the TiO{sub 2} surface. The composite with Sn 30 wt% produced a mixture with the phases SnS/{gamma}-Sn{sub 2}S{sub 3} and SnO{sub 2}. Photocatalytic experiments with the composites SnX{sub n}/TiO{sub 2} using the textile dye Drimaren red as a probe molecule showed a first-order reaction with rate constants k{sub absorbance} for the composites with Sn 1 and 5% higher than pure TiO{sub 2} which was explained by the formation of the more active photocatalyst composite SnO{sub 2}/TiO{sub 2}.},
doi = {10.1016/J.MATERRESBULL.2009.09.022},
url = {https://www.osti.gov/biblio/22202548}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 2,
volume = 45,
place = {United States},
year = {2010},
month = {2}
}