Synthesis of uniform octahedral tungsten trioxide by RF induction thermal plasma and its application in gas sensing

被引：57

作者：

Zhang, Haibao ^{[1
]}

Yao, Mingshui ^{[1
,2
]}

Bai, Liuyang ^{[1
]}

Xiang, Weicheng ^{[1
]}

Jin, Huacheng ^{[1
]}

Li, Jinlin ^{[1
]}

Yuan, Fangli ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CRYSTENGCOMM | 2013年 / 15卷 / 07期

基金：

美国国家科学基金会; 国家高技术研究发展计划(863计划);

关键词：

OXIDE; NANOPARTICLES; SENSITIVITY; DECOMPOSITION; FABRICATION; NANOTUBES; GROWTH;

D O I：

10.1039/c2ce26514a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Well-defined uniform octahedral WO3 are prepared via a simple one-step thermal plasma technique. The detailed structures of the synthesized materials are characterized by XRD, EDX, FESEM, SAED and HRTEM. Each octahedron is nearly perfect with a highly symmetric, regular shape containing 8 facets, 6 vertices, and 12 edges, which exhibit sharp edges and corners as well as smooth surfaces. Processing parameters dependent experiments are performed to control its shape and size distribution. The regular octahedral WO3 shows good sensing properties to benzene gas, which might mainly be due to its highly exposed {111} faces and the regular octahedral shape.

引用

页码：1432 / 1438

页数：7

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