Synthesis of Tin Dioxide Octahedral Nanoparticles with Exposed High-Energy {221} Facets and Enhanced Gas-Sensing Properties

被引:402
作者
Han, Xiguang [1 ]
Jin, Mingshang [1 ]
Xie, Shuifen [1 ]
Kuang, Qin [1 ]
Jiang, Zhiyuan [1 ]
Jiang, Yaqi [1 ]
Xie, Zhaoxiong [1 ]
Zheng, Lansun [1 ]
机构
[1] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
基金
中国国家自然科学基金;
关键词
hydrothermal synthesis; nanoparticles; sensors; surface engineering; tin dioxide; HIGH-INDEX FACETS; SNO2; NANOWIRES; SURFACES; METHANE; SHAPE; CO; NANOCRYSTALS; PERCENTAGE; NANOSHEETS; OXIDATION;
D O I
10.1002/anie.200903926
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Selective exposure of high-energy {221} facets with many surface dangling bonds, (111) terraces, and (110) steps (bottom picture) at the surface of octahedral SnO2 nanoparticles (top) through a simple hydrothermal synthesis route gives them enhanced gas-sensing performance over particles with other shapes, whereby the sensing activity is proportional to the fraction of {221} facets among the exposed surfaces. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:9180 / 9183
页数:4
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