Novel 3D graphene aerogel-ZnO composites as efficient detection for NO2 at room temperature

被引：121

作者：

Liu, Xin ^{[1
,2
]}

Sun, Jianbo ^{[2
]}

Zhang, Xitian ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Harbin Normal Univ, Sch Phys & Elect Engn, Minist Educ, Key Lab Photon & Elect Bandgap Mat, Harbin 150025, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 211卷

关键词：

ZnO/GAs; 3D interconnected graphene; NO2 gas sensing properties; Room temperature; GAS SENSOR; SENSING CHARACTERISTICS; ANODE MATERIAL; OXIDE; NANOCOMPOSITES; PERFORMANCE; NANORODS; FILM; CO;

D O I：

10.1016/j.snb.2015.01.083

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel three-dimensional graphene aerogel-ZnO spheres composite has been synthesized via a simple solvothermal method. The three-dimensional graphene exhibits interconnected macroporous networks and the ZnO spheres featured a size of 0.5-1 mu m are anchored homogeneously on the surface of graphene layers. When being used as gas sensors for detection of NO2, the porous graphene-ZnO composite achieves a higher response and fast response/recovery behavior at room temperature effectively (RT). The enhancement of the sensing response is mainly attributed to the improved conductivity, the 3D porous structure of graphene and the interaction between p-type graphene and n-type zinc oxide. The sensing mechanism of the composite is also discussed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：220 / 226

页数：7

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