Porphyrin Functionalized Graphene for Sensitive Electrochemical Detection of Ultratrace Explosives

被引：136

作者：

Guo, Chun Xian ^{[1
,2
]}

Lei, Yu ^{[3
]}

Li, Chang Ming ^{[1
,2
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore

[2] Nanyang Technol Univ, Ctr Adv Bionanosyst, Singapore 637457, Singapore

[3] Univ Connecticut, Dept Chem Mat & Biomol Engn, Storrs, CT 06269 USA

来源：

ELECTROANALYSIS | 2011年 / 23卷 / 04期

关键词：

Graphene; Porphyrin; Electrochemical sensors; Explosive detection; Nitroaromatic compounds; FLIGHT MASS-SPECTROMETRY; NITROAROMATIC COMPOUNDS; VOLTAMMETRIC DETECTION; HYDROGEN-PEROXIDE; OXYGEN REDUCTION; CARBON ELECTRODE; TNT; 2,4,6-TRINITROTOLUENE; METALLOPORPHYRINS; ELECTROCATALYSIS;

D O I：

10.1002/elan.201000522

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Porphyrin functionalized graphene is used to electrochemically detect nitroaromatic explosives. It is found that synergistic effects from the specific good adsorptive properties of porphyrin and the large electroactive surface area and fast charge transfer of graphene contribute to the sensitive detection. The porphyrin/graphene sensor shows an ultratrace detection of as low as 1 ppb of 2,4-dinitrotoluene, 0.5 ppb of 2,4,6-trinitrotoluene, 1 ppb of 1,3,5-trinitrobenzene and 2 ppb of 1,3-dinitrobenzene respectively and good reproducibility within 5.1% standard deviation for a series of 9 repetitive measurements. The porphyrin/graphene sensor provides a unique platform in the analysis of nitroaromatic explosives for various security and environmental applications.

引用

页码：885 / 893

页数：9

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