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兰州大学机构库  > 物理科学与技术学院  > 期刊论文
题名: Effects of SnO2 additives on nanostructure and gas-sensing properties of α-Fe2O3 nanotubes
作者: Zhao, Changhui; Hu, Wenqi; Zhang ZX(张振兴); Zhou JY(周金元); Pan XJ(潘孝军); Xie EQ(谢二庆)
收录类别: SCIE
出版日期: 2014-05
刊名: Sensors and Actuators B: Chemical
卷号: 195, 期号:null, 页码:486-493
英文摘要: SnO2/alpha-Fe2O3 (SFO) nanotubes with different Sn/Fe molar ratios have been synthesized by a facile single-capillary electrospinning route, followed by heat treatment at 500 degrees C for 2 h, for the improvement of one-dimensional alpha-Fe2O3 based sensing materials achieving high performance. Scanning electron microscopy, transmission electron microscopy, and X-ray diffraction results indicated that the amount of SnO2 additives largely influenced the phases and structures of SFO-x (xSnO(2)/0.5(1-x)alpha-Fe2O3) composite nanotubes. The grain size of alpha-Fe2O3 gradually decreased with the increase of tin components. Especially in the SFO-0.33 nanotubes, a thorn-like hierarchical structure was formed. The surface segregation and phase separation effects are suggested as the growth mechanism. And these special architectures expectedly made the sensors, based on SFO-x (0.025 <= x <= 0.2) nanotubes, significantly enhancing sensitivity and selectivity in ethanol detection. Our research may be meaningful for extending our view of the electrospun SFO composites. (C) 2014 Elsevier B.V. All rights reserved.
关键词: SnO2/alpha-Fe2O3 nanotubes ; Electrospinning ; Growth mechanism ; Gas sensor
作者部门: Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
通讯作者: Xie, EQ (reprint author), Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China.
学科分类: Chemistry ; Electrochemistry ; Instruments & Instrumentation
文章类型: Article
所属项目编号: Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment(CURE) at Lanzhou University ; the National Natural Science Foundation of China (GrantNo. 51302122and U1232121).
所属项目名称: 国家自然科学基金项目 ; 君政基金项目
项目资助者: NSFC ; LZU
语种: 英语
DOI: 10.1016/j.snb.2014.01.084
ISSN号: 0925-4005
第一机构:
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/185702
Appears in Collections:物理科学与技术学院_期刊论文

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Recommended Citation:
Zhao, Changhui,Hu, Wenqi,Zhang ZX,et al. Effects of SnO2 additives on nanostructure and gas-sensing properties of α-Fe2O3 nanotubes[J]. Sensors and Actuators B: Chemical,2014,195(null):486-493.
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