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题名: Self-assembled In2O3 truncated octahedron string and its sensing properties for formaldehyde
作者: Yang, Wei1, 2;  Wan, Peng3;  Zhou, Xiaodong1;  Hu, Jiming1;  Guan, Yafeng2;  Feng, Liang2
关键词: Indium oxide ;  Self-assembled ;  Formaldehyde ;  Octahedron ;  Sensor
刊名: SENSORS AND ACTUATORS B-CHEMICAL
发表日期: 2014-10-01
DOI: 10.1016/j.snb.2014.04.003
卷: 201, 页:228-233
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Analytical ;  Electrochemistry ;  Instruments & Instrumentation
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Instruments & Instrumentation
英文摘要: In this work, a continuous two-step route consisting of ammonolysis and re-oxidation process was developed for the growth of a novel In2O3 truncated octahedron string morphology. The as-synthesized products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), results of which indicated that the truncated octahedron strings were self-assembled by In2O3 crystals, and several tens of micrometers along their longitudinal axes. In addition, a gas sensor based on as-synthesized In2O3 truncated octahedron strings was fabricated using a ceramic tube as substrate in an in situ deposition manner. The sensor exhibited good selectivity toward formaldehyde, and showed a significant response for formaldehyde at a concentration lower to 5 ppm. The present study may serve as a basis for designing other novel morphology from semiconductor oxides for gas-sensing applications. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: INDIUM OXIDE NANOPARTICLES ;  VOLATILE ORGANIC-COMPOUNDS ;  ONE-STEP SYNTHESIS ;  GAS SENSORS ;  HIGH-SENSITIVITY ;  LOW-TEMPERATURE ;  NANOWIRES ;  NANOSTRUCTURES ;  GROWTH ;  MICROSPHERES
语种: 英语
WOS记录号: WOS:000338705700033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143204
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Wuhan Univ, Coll Chem & Mol Sci, Key Lab Analyt Chem Biol & Med, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
3.Dalian Univ Technol, Fac Chem Environm & Biol Sci & Technol, Dalian 116024, Peoples R China

Recommended Citation:
Yang, Wei,Wan, Peng,Zhou, Xiaodong,et al. Self-assembled In2O3 truncated octahedron string and its sensing properties for formaldehyde[J]. SENSORS AND ACTUATORS B-CHEMICAL,2014,201:228-233.
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