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Synthesis of Tin Dioxide Octahedral Nanoparticles with Exposed High‐Energy {221} Facets and Enhanced Gas‐Sensing Properties
Author(s) -
Han Xiguang,
Jin Mingshang,
Xie Shuifen,
Kuang Qin,
Jiang Zhiyuan,
Jiang Yaqi,
Xie Zhaoxiong,
Zheng Lansun
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200903926
Subject(s) - nanoparticle , octahedron , hydrothermal circulation , dangling bond , tin dioxide , energy (signal processing) , nanotechnology , materials science , surface energy , tin , surface (topology) , chemical engineering , computer science , crystallography , chemistry , physics , optoelectronics , crystal structure , composite material , metallurgy , geometry , engineering , mathematics , quantum mechanics , silicon
Selective exposure of high‐energy {221} facets with many surface dangling bonds, (111) terraces, and (110) steps (bottom picture) at the surface of octahedral SnO 2 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.