摘要
采用涂覆法制备多壁碳纳米管(MWCNT)-离子液体([BMIM]PF6)修饰电极,研究Cu2+在该修饰电极上的阳极溶出伏安行为。考察了实验条件对Cu2+电化学行为的影响。研究表明,Cu2+在修饰电极上可得到灵敏的溶出峰。在优化的实验条件下,Cu2+在1.0×10-6～1.0×10-5mol/L浓度范围内与其氧化峰电流呈良好的线性关系,相关系数为0.998 4,检出限为9.0×10-8mol/L。该修饰电极制备简单,重现性好,用于微量铜的检测,效果良好。
The modified electrode was prepared by coating the mixture of multi-walled carbon nanotube particles（MWC-NT） and the ionic liquid（[BMIM]PF6） on the glassy carbon electrode surface.The accumulative and electrochemical behavior of Cu（Ⅱ） on the modified electrode was investigated.The sensitive anodic stripping peak of Cu（Ⅱ） was obtained and was compared with that obtained using glassy carbon electrode.Under the optimum conditions,stripping peak current of Cu（Ⅱ）has good linearity with concentration in the range of 1.0 × 10-6 ～ 1.0 × 10-5mol/L,and the detection limit is 9.0 × 10-8 mol/L.The modified sensor is easy to prepare with good repeatability and can be use for determination of trace Cu（II）.
出处
《四川理工学院学报（自然科学版）》
CAS
2011年第5期512-514,共3页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
四川理工学院科技项目(2009xjkyL001)
四川省教育厅基金项目(10ZB102)
关键词
多壁碳纳米管
修饰电极
阳极溶出
CU2+
multi-walled carbon nanotube
modified electrode
anodic stripping
Cu（Ⅱ）
