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Controlled Synthesis and Enhanced Catalytic and Gas-Sensing Properties of Tin Dioxide Nanoparticles with Exposed High-Energy Facets

  1. Xue Wang,
  2. Xiguang Han,
  3. Shuifen Xie,
  4. Dr. Qin Kuang*,
  5. Yaqi Jiang,
  6. Subing Zhang,
  7. Xiaoliang Mu,
  8. Guangxu Chen,
  9. Prof. Zhaoxiong Xie*,
  10. Prof. Lansun Zheng

Article first published online: 20 JAN 2012

DOI: 10.1002/chem.201103280

Issue

Chemistry - A European Journal

Chemistry - A European Journal

Volume 18, Issue 8, pages 2283–2289, February 20, 2012

Additional Information

How to Cite

Wang, X., Han, X., Xie, S., Kuang, Q., Jiang, Y., Zhang, S., Mu, X., Chen, G., Xie, Z. and Zheng, L. (2012), Controlled Synthesis and Enhanced Catalytic and Gas-Sensing Properties of Tin Dioxide Nanoparticles with Exposed High-Energy Facets. Chem. Eur. J., 18: 2283–2289. doi: 10.1002/chem.201103280

Author Information

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 (P.R. China), Fax: (+86) 592-218-3047

*State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 (P.R. China), Fax: (+86) 592-218-3047

Publication History

  1. Issue published online: 10 FEB 2012
  2. Article first published online: 20 JAN 2012
  3. Manuscript Received: 18 OCT 2011

Funded by

  • National Basic Research Program of China. Grant Number: 2011CBA00508
  • Fundamental Research Funds for the Central Universities. Grant Number: 2010121017
  • National Natural Science Foundation. Grant Numbers: 21131005, 21021061, 21073145, 21171142

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Keywords:

  • hydrothermal synthesis;
  • oxidation;
  • nanoparticles;
  • sensors;
  • tin

Abstract

A morphology evolution of SnO2 nanoparticles from low-energy facets (i.e., {101} and {110}) to high-energy facets (i.e., {111}) was achieved in a basic environment. In the proposed synthetic method, octahedral SnO2 nanoparticles enclosed by high-energy {111} facets were successfully synthesized for the first time, and tetramethylammonium hydroxide was found to be crucial for the control of exposed facets. Furthermore, our experiments demonstrated that the SnO2 nanoparticles with exposed high-energy facets, such as {221} or {111}, exhibited enhanced catalytic activity for the oxidation of CO and enhanced gas-sensing properties due to their high chemical activity, which results from unsaturated coordination of surface atoms, superior to that of low-energy facets. These results effectively demonstrate the significance of research into improving the physical and chemical properties of materials by tailoring exposed facets of nanomaterials.

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