[1]方艳红,连慧婷,陈国华.石墨烯/壳聚糖修饰玻碳电极测定水样中痕量铜离子[J].华侨大学学报(自然科学版),2011,32(5):529-531.[doi:10.11830/ISSN.1000-5013.2011.05.0529]
　FANG Yan-hong,LIAN Hui-ting,CHEN Guo-hua.Determination of Copper with Graphene Nanoplatelets-Chitosan Modified Glassy Carbon Electrode[J].Journal of Huaqiao University(Natural Science),2011,32(5):529-531.[doi:10.11830/ISSN.1000-5013.2011.05.0529]
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石墨烯/壳聚糖修饰玻碳电极测定水样中痕量铜离子()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第32卷
期数:
2011年第5期
页码:
529-531
栏目:
出版日期:
2011-09-20

文章信息/Info

Title:
Determination of Copper with Graphene Nanoplatelets-Chitosan Modified Glassy Carbon Electrode
文章编号:
1000-5013(2011)05-0529-03
作者:
方艳红; 连慧婷; 陈国华
华侨大学材料科学与工程学院
Author(s):
FANG Yan-hong;  LIAN Hui-ting;  CHEN Guo-hua
College of Material Science and Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
石墨烯;  壳聚糖;  阳极溶出伏安法;  Cu2+
Keywords:
graphene nanoplatelets;  chitosan;  anodic stripping voltammetry;  Cu2+
分类号:
O657.1; X832
DOI:
10.11830/ISSN.1000-5013.2011.05.0529
文献标志码:
A
摘要:
采用控制电位电解法,在玻碳电极(GCE)上进行石墨烯(GN)/壳聚糖(CS)修饰膜的电沉积,将制得的膜修饰电极GN/CS/GCE在0.1 mol.L-1的HAc-NaAc电解液(pH=4.2)于-0.5 V(vs.SCE)电位下富集Cu2+,并用差分脉冲溶出伏安法测定.结果表明,该膜修饰电极对Cu2+的富集作用明显强于裸GCE及CS/GCE.在优化实验条件下,Cu2+的浓度在1.0~80.0μmol.L-1范围内与阳极溶出峰电流呈线性关系,相关系数为0.999 6,检出限为12.66 nmol.L-1,所制得的修饰电极具有较高的灵敏度和选择性.
Abstract:
The electrodeposition of graphene nanoplatelets/chitosan(GN/CS) films on glassy carbon electrode(GCE)was carried out by potential controlled electrolysis.In 0.1 mol·L-1 HAc-NaAc solution(pH=4.2),the modifed electrode GN/CS/GCE was exploited for the selective preconcentration of Cu2+ at-0.5 V(vs.SCE).The preconcentrated Cu2+ was firstly reduced at a certain potential and then was determined by differential pulse stripping voltammetry.The results showed that the GN/CS/GCE has strong enrichment capacity towards Cu2+ than that of the bare GCE and CS/GCE.Under the optimized conditions,the anodic peak currents were linear related to the Cu2+ concentration in the range of 1.0~80.0 μmol·L-1 with a correlation coefficient of 0.999 6.A detection limit(S/N=3) of 12.66 nmol·L-1 for Cu2+ was obtained,the modified electrodes showed high sensitivity and selectivity.

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备注/Memo

备注/Memo:
国家自然科学基金资助项目(20574025); 福建省自然科学基金重点项目(E0820001)
更新日期/Last Update: 2014-03-23