期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 8, 页码 2283-2289出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201103280
关键词
hydrothermal synthesis; oxidation; nanoparticles; sensors; tin
资金
- National Basic Research Program of China [2011CBA00508]
- Fundamental Research Funds for the Central Universities [2010121017]
- National Natural Science Foundation of China [21131005, 21021061, 21073145, 21171142]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据