The influence of oxygen functional groups on gas-sensing properties of reduced graphene oxide (rGO) at room temperature

被引：54

作者：

Wang, X. ^{[1
]}

Li, X. ^{[1
]}

Zhao, Y. ^{[1
]}

Chen, Y. ^{[1
]}

Yu, J. ^{[1
]}

Wang, J. ^{[1
]}

机构：

[1] Dalian Univ Technol, Key Lab Liaoning Integrated Circuits Technol, Inst Sensing Technol, Sch Elect Sci & Technol, Dalian 116024, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 57期

基金：

中国国家自然科学基金;

关键词：

CHEMICAL-REDUCTION; NO2; SENSORS; MOLECULES; CHEMISTRY; LAYER;

D O I：

10.1039/c6ra05659h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three methods were used to prepare reduced graphene oxide (rGO) with various ratios of oxygen functional groups, such as -OOH, -OH and C=O, to study their effects on the NO2 sensing properties at room temperature. It was found that the percentages of oxygen-containing species such as -OH in the rGO nanosheet, significantly affected the sensitivity of rGO to NO2 at room temperature. The -OH species can promote the sensitivity and also the recovery ability with respect to NO2. This may be because -OH has a greater attraction to NO2 and obtains electrons from it, whereas the separation of NO2 from -OH is also slightly easier, enabling a better recovery compared to other oxygen functional groups such as -OOH and C=O.

引用

页码：52339 / 52346

页数：8