Electrochemical bisphenol A sensor based on N-doped graphene sheets

被引:195
作者
Fan, Haixia [1 ]
Li, Yan [1 ]
Wu, Dan [1 ]
Ma, Hongmin [1 ]
Mao, Kexia [1 ]
Fan, Dawei [1 ]
Du, Bin [1 ]
Li, He [1 ]
Wei, Qin [1 ]
机构
[1] Univ Jinan, Key Lab Chem Sensing & Anal, Shandong Univ, Sch Chem & Chem Engn, Jinan 250022, Peoples R China
关键词
N-doped graphene; Electrochemical sensor; Bisphenol A; Endocrine disruptor; RIVER WATER; CARBON; REDUCTION; BPA;
D O I
10.1016/j.aca.2011.10.051
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Bisphenol A (BPA), which could disrupt endocrine system and cause cancer, has been considered as an endocrine disruptor. Therefore, it is very important and necessary to develop a sensitive and selective method for detection of BPA. Herein, nitrogen-doped graphene sheets (N-GS) and chitosan (CS) were used to prepare electrochemical BPA sensor. Compared with graphene, N-GS has favorable electron transfer ability and electrocatalytic property, which could enhance the response signal towards BPA. CS also exhibits excellent film forming ability and improves the electrochemical behavior of N-GS modified electrode. The sensor exhibits a sensitive response to BPA in the range of 1.0 x 10(-8)-1.3 x 10(-6) mol L-1 with a low detection limit of 5.0 x 10(-9) mol L-1 under the optimal conditions. Finally, this proposed sensor was successfully employed to determine BRA in water samples with satisfactory results. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:24 / 28
页数:5
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