Intrinsic peroxidase-like catalytic activity of nitrogen-doped graphene quantum dots and their application in the colorimetric detection of H2O2 and glucose

被引：258

作者：

Lin, Liping ^{[1
,2
]}

Song, Xinhong ^{[1
,2
]}

Chen, Yiying ^{[1
,2
]}

Rong, Mingcong ^{[1
,2
]}

Zhao, Tingting ^{[4
]}

Wang, Yiru ^{[1
,2
]}

Jiang, Yaqi ^{[1
,2
]}

Chen, Xi ^{[1
,2
,3
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Coll Chem & Chem Engn, MOE Key Lab Spectrochem Anal & Instrumentat, Xiamen 361005, Peoples R China

[3] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China

[4] Xiamen Huaxia Coll, Xiamen 361024, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2015年 / 869卷

关键词：

Nitrogen-doped graphene quantum dots; Intrinsic peroxidase-like catalytic activity; Colorimetric detection; H2O2 and glucose sensing; HYDROGEN-PEROXIDE; OXIDE NANOPARTICLES; AU NANOCLUSTERS; LOW-COST; FLUORESCENCE; MIMETICS; REDUCTION; ENZYMES;

D O I：

10.1016/j.aca.2015.02.024

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, the highly intrinsic peroxidase-like catalytic activity of nitrogen-doped graphene quantum dots (N-GQDs) is revealed. This activity was greatly dependent on pH, temperature and H2O2 concentration. The experimental results showed that the stable N-GQDs could be used for the detection of H2O2 and glucose over a wide range of pH and temperature, offering a simple, highly selective and sensitive approach for their colorimetric sensing. The linearity between the analyte concentration and absorption ranged from 20 to 1170 mu M for H2O2 and 25 to 375 mu M for glucose with a detection limit of 5.3 mu M for H2O2 and 16 mu M for glucose. This assay was also successfully applied to the detection of glucose concentrations in diluted serum and fruit juice samples. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：89 / 95

页数：7

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