Rapid Detection of Copper by the Carbon Nanotube Chemically Modified Electrode
Since carbon nanotube (CNT) was discovered, it has been focused due to its distinctive structure and performance. In electrochemical field, CNT can be used as the modified material to prepare CNT chemically modified electrode (CNT-CME) and shows excellent electrochemical performances. A CNT-CME was obtained via growing CNT on the graphite electrode in situ by catalyst chemical vapor deposition. The obtained grown in situ CNT-CME (named as GSCNT-CME) had shown good testing accuracy and good electrochemical response. In this paper, the GSCNT-CME was used to detect copper ion in water via the cyclic voltammetry. The results showed that the linear range of GSCNT-CME to copper was from 1.0×10-5 to 2.5×10–3 mol/L in 0.6 mol/L H2SO4 supporting solution (with the scanning rate of 10 mV/s). The linear range was exactly the most in need of detection Cu2+ concentration (from 1.57×10-5 to 1.0×10–3 mol/L) according to the Ⅱ, Ⅲ and Ⅳ drinking water national required standard (GB3838-83, ≤1.57×10-5 mol/L). And the detection limit was 2.64×10-6 mol/L (S/N=3). At the same time, the recovery of copper ion was 93.04％-99.79％. The results indicated that GSCNT-CME had the important value of practical application to rapid detect copper ion in water.
Carbon nanotube Chemically modified electrode rapid detection Copper ion
Yang Rong Jiang Qi Liu Peng Chen Qin Wang Yijia Zhao Yong
Key Laboratory of Advanced Technologies of Materials (Ministry of Education of China),Superconductiv Key Laboratory of Advanced Technologies of Materials (Ministry of Education of China), Superconducti
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
255-259
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）