Synthesis and triethylamine sensing properties of mesoporous α-Fe2O3 microrods

被引：94

作者：

Sun, Guang ^{[1
]}

Chen, Honglin ^{[1
]}

Li, Yanwei ^{[1
]}

Ma, Guangzhou ^{[1
]}

Zhang, Saisai ^{[1
]}

Jia, Tiekun ^{[2
]}

Cao, Jianliang ^{[1
]}

Wang, Xiaodong ^{[1
]}

Bala, Hari ^{[1
]}

Zhang, Zhanying ^{[1
]}

机构：

[1] Henan Polytech Univ, Sch Mat Sci & Engn, Cultivating Base Key Lab Environm Friendly Inorga, Jiaozuo 454000, Peoples R China

[2] Luoyang Inst Sci & Technol, Dept Mat Sci & Engn, Luoyang 471023, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 178卷

基金：

中国国家自然科学基金;

关键词：

Semiconductors; Porous materials; alpha-Fe2O3; Sacrificial template; Gas sensor; GAS-CHROMATOGRAPHY; HETEROJUNCTION;

D O I：

10.1016/j.matlet.2016.04.209

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mesoporous microrods (MPMRs) of alpha-Fe2O3 were successfully synthesized via a facile and reliable two-step route by using pre-synthesized FeC2O4 center dot 2H(2)O as sacrificial template. The prepared samples were characterized by XRD, FESEM, TEM, and N-2 adsorption-desorption, respectively. Results indicated that during the thermal decomposition process, the FeC2O4 center dot 2H(2)O precursor can pass its morphology on to the alpha-Fe2O3 product, meanwhile, a large amount of pores with the dominant size around 5 nm were created in the alpha-Fe2O3 microrods. The BET surface area of the alpha-Fe2O3 is 122.7 m(2)/g. The sensor fabricated with as-prepared alpha-Fe2O3 MPMRs exhibited impressive gas-sensing characteristics towards triethylamine (TEA), such as relativity low optimum operating temperature (275 degrees C), high response, and good linearity in a wide gas concentration range (20-300 ppm), implying its promising application in detecting TEA. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：213 / 216

页数：4

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