One-step synthesis of polypyrrole/Fe2O3 nanocomposite and the enhanced response of NO2 at low temperature

被引：64

作者：

Wang, Chao ^{[1
]}

Yang, Ming ^{[1
,3
]}

Liu, Lihong ^{[1
]}

Xu, Yingming ^{[1
]}

Zhang, Xianfa ^{[1
]}

Cheng, Xiaoli ^{[1
]}

Gao, Shan ^{[1
]}

Gao, Yuan ^{[2
]}

Huo, Lihua ^{[1
]}

机构：

[1] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150080, Heilongjiang, Peoples R China

[2] Heilongjiang Univ, Elect Engn Coll, Harbin 150080, Heilongjiang, Peoples R China

[3] Jiamusi Univ, Sch Pharm, Jiamusi 154007, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2020年 / 560卷

基金：

对外科技合作项目（国际科技项目）; 中国国家自然科学基金;

关键词：

Polypyrrole/Fe2O3; Nanocomposite; One-step hydrothermal; NO2; sensing; GAS-SENSING PROPERTIES; HYBRID NANOCOMPOSITES; OXIDE HYBRID; SENSOR; PERFORMANCE; NANOWIRES; MECHANISM; FILMS;

D O I：

10.1016/j.jcis.2019.10.076

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：

In order to enhance the gas response of polypyrrole to NO2, the polypyrrole/Fe2O3 nanocomposites are synthesized by one-step hydrothermal route. The presence of ferric oxide in composites is demonstrated by XPS, HRTEM and TG analyses. The polypyrrole/Fe2O3 sensor exhibits high selectivity and response to NO2 at 50 degrees C. Compared with other polypyrrole/metal oxide materials, the polypyrrole/Fe2O3 materials are easy to be synthesized, and the gas sensor has a higher response of 220.7%, lower detection limit of 0.1 ppm and good linear relationship when the NO2 concentrations range from 0.1 ppm to 10 ppm. The gas response is greatly improved in comparison with the pure polypyrrole and Fe2O3. The reason for the improved response is also discussed. (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：312 / 320

页数：9

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