Convenient route for synthesis of alpha-Fe2O3 and sensors for H2S gas

被引：74

作者：

Zhang, Hai-Jun ^{[1
,2
]}

Meng, Fan-Na ^{[2
]}

Liu, Li-Zhu ^{[1
]}

Chen, Yu-Jin ^{[3
]}

机构：

[1] Harbin Univ Sci & Technol, Harbin 150080, Heilongjiang, Peoples R China

[2] Heilongjiang Univ Sci & Technol, Harbin 150027, Heilongjiang, Peoples R China

[3] Harbin Engn Univ, Coll Sci, Harbin 150001, Heilongjiang, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 774卷 / 1181-1188期

关键词：

alpha-Fe2O3; nanosheet; Solvothermal method; H2S sensing characteristics; Nanostructures; FACILE SYNTHESIS; POROUS ALPHA-FE2O3; SUPERCAPACITOR ELECTRODES; SENSING CHARACTERISTICS; LEVEL DETECTION; PERFORMANCE; NANOPARTICLES; NANORODS; FABRICATION; GAMMA-FE2O3;

D O I：

10.1016/j.jallcom.2018.09.384

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A-Fe2O3 nanosheets were synthesized through solvothermal method and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller specific surface area analysis (BET) techniques. It was found that the reaction temperature plays a very important role in the composition, the size and morphology at reaction temperature ranging from 100 to 160 degrees C. Obtained results indicated that alpha-Fe2O3 nanosheets with size of 200 nm diameter and 50 nm thickness were prepared at 150 degrees C. To demonstrate the use of alpha-Fe2O3 nanosheets materials, a chemical gas sensor has been fabricated and investigated. The special structural characteristic of alpha-Fe2O3 nanosheet resulted in its excellent H2S sensing properties including high sensor response, low detection limit, low working temperature and good selectivity. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1181 / 1188

页数：8

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