Practical Chemical Sensors from Chemically Derived Graphene

被引：1207

作者：

Fowler, Jesse D. ^{[3
]}

Allen, Matthew J. ^{[1
,2
]}

Tung, Vincent C. ^{[2
,4
]}

Yang, Yang ^{[2
,4
]}

Kaner, Richard B. ^{[1
,2
,4
]}

Weiller, Bruce H. ^{[3
]}

机构：

[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[3] Aerosp Corp, Space Mat Lab, Mat Proc & Evaluat Dept, Los Angeles, CA 90009 USA

[4] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

ACS NANO | 2009年 / 3卷 / 02期

基金：

美国国家科学基金会;

关键词：

hydrazine; micro hot plate; nitrogen dioxide; ammonia; 2,4-dinitrotoluene; CARBON NANOTUBES; GAS; OXIDE; VAPOR; 2,4-DINITROTOLUENE; ADSORPTION; NANOSHEETS; MOLECULES; CONTACT;

D O I：

10.1021/nn800593m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the development of useful chemical sensors from chemically convened graphene dispersions using spin coating to create single-layer films on interdigitated electrode arrays. Dispersions of graphene in anhydrous hydrazine are formed from graphite oxide. Preliminary results are presented on the detection of NO2, NH3, and 2,4-dinitrotoluene using this simple and scalable fabrication method for practical devices. Current versus voltage curves are linear and ohmic in all cases, studied independent of metal electrode or presence of analytes. The sensor response is consistent with a charge transfer mechanism between the analyte and graphene with a limited role of the electrical contacts. A micro hot plate sensor substrate is also used to monitor the temperature dependence of the response to nitrogen dioxide. The results are discussed in light of

引用

页码：301 / 306

页数：6

共 30 条

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