Synthesis of SnO2-CuO heterojunction using electrospinning and application in detecting of CO

被引：127

作者：

Bai, Shouli ^{[1
]}

Guo, Wentao ^{[1
]}

Sun, Jianhua ^{[1
,2
]}

Li, Jiao ^{[1
]}

Tian, Ye ^{[1
]}

Chen, Aifan ^{[1
]}

Luo, Ruixian ^{[1
]}

Li, Dianqing ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Key Lab Environm Harmful Chem Anal, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2016年 / 226卷

基金：

中国国家自然科学基金;

关键词：

SnO2; CuO; Electrospinning; p-n heterojunction; CO sensor; TRIETHYLAMINE-SENSING PROPERTIES; GAS SENSORS; MECHANISM; OXIDE; NANOFIBERS; FILMS; H2S; MICROSPHERES; PERFORMANCE; VAPOR;

D O I：

10.1016/j.snb.2015.11.028

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

SnO2-CuO heterostructures have been synthesized via electrospinning method, which overcomes the defect of SnO2 generally prepared at high temperature. The structure, morphology, size, specific surface, thermal stability and surface composition of nanocomposite were characterized by XRD, SEM, TEM, BET, TG and XPS. The results testify that the change in property and structure of composite depends on the CuO content in composite. The SnO2 composite with 30 wt% CuO not only exhibits excellent selectivity and high response that is 16 and 2.5 times higher than that of pure CuO and SnO2, respectively, but also reduces the operating temperature from 295 degrees C to 235 degrees C. The mechanism enhanced sensing properties was discussed in detail, except for enhancing adsorption of gas on the material surface; the enhancement can be attributed to the formation of p-n heterojunction at the interface between the SnO2 and the CuO. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：96 / 103

页数：8

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