纳米TiO2/Nafion修饰金电极溶出伏安法测量痕量铜

YIC-IR

	纳米TiO2/Nafion修饰金电极溶出伏安法测量痕量铜
其他题名	Determination of Trace Copper by Anodic Stripping Voltammetry at Nano-TiO2/Nafion Modified Gold Electrode
	庄建梅 1; 张丽 2; 张春荣 1; 申大忠 1; 潘大为2
发表期刊	环境科学与技术
ISSN	1003-6504
	2012
卷号	35.0 期号:007 页码:138-141
关键词	nano-TiO2 差分脉冲溶出伏安法铜离子修饰电极
英文摘要	利用纳米二氧化钛（nano-TiO2）的结构特性,采用滴涂法制备了一种nano-TiO2/Nafion修饰金电极,采用差分脉冲溶出伏安法实现了水样中痕量铜的检测。详细研究了Cu2＋在nano-TiO2/Nafion修饰金电极上的电化学响应行为,并讨论了nano-TiO2/Nafion膜的厚度、溶液pH值、富集电位、富集时间等对Cu2＋溶出峰电流的影响。实验结果表明：在pH=2.0硝酸溶液中,-0.5 V恒电位搅拌富集240 s,静置10 s后阳极化扫描,Cu2＋在0.25 V左右出现阳极溶出峰。相比于裸金电极,该峰电流大大提高,表明nano-TiO2对Cu2＋的溶出具有一定的增敏作用。在最优化实验条件下,10~900 nmol/L范围内,Cu2＋的溶出峰电流与其浓度呈良好的线性关系,检出限可达3.2 nmol/L。该修饰电极具有一定的抗干扰能力,将其应用于国标样品和实际自来水样中Cu2＋的检测,结果令人满意。
中文摘要	A nano-TiO2/Nafion modified gold electrode was developed to detect copper utilizing the properties of nano TiO2.Electrochemical behavior of Cu2＋ at nano-TiO2/Nafion modified gold electrode was studied by differential pulse stripping voltammetry.Experimental parameters such as amount of nano-TiO2/Nafion suspension,pH value of the supporting electrolyte,accumulation potential and accumulation time were optimized.Results indicated that a remarkable anodic peak appeared at 0.25 V when accumulating for 240 s at-0.5 V in HNO3（pH 2.0）solution with stirring.Compared to bare gold electrode,peak current enhanced greatly indicating the strong preconcentration of Cu2＋ at nano-TiO2/Nafion composite film.Under the optimized working conditions,the stripping peak currents were linear with concentrations of Cu2＋ over the range from 10 to 900 nmol/L.The detection limit was 3.2 nmol/L.The electrode with some anti-interference abilities for the determination of Cu2 ＋ can be used for the determination of Cu2 ＋ in national standard substance and tap water samples with satisfactory results.
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:4580589
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/34996
专题	中国科学院烟台海岸带研究所
作者单位	1.山东师范大学 2.中国科学院烟台海岸带研究所
推荐引用方式 GB/T 7714	庄建梅,张丽,张春荣,等. 纳米TiO2/Nafion修饰金电极溶出伏安法测量痕量铜[J]. 环境科学与技术,2012,35.0(007):138-141.
APA	庄建梅,张丽,张春荣,申大忠,&潘大为.(2012).纳米TiO2/Nafion修饰金电极溶出伏安法测量痕量铜.环境科学与技术,35.0(007),138-141.
MLA	庄建梅,et al."纳米TiO2/Nafion修饰金电极溶出伏安法测量痕量铜".环境科学与技术 35.0.007(2012):138-141.