Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt
作者： Yuane Wang , Dawei Pan , Xinming Li , Wei Qin
关键词:
摘要: A bismuth/multi-walled carbon nanotube (Bi/MWNT) composite modified electrode for determination of cobalt by differential pulse adsorptive cathodic stripping voltammetry is described. The fabricated potentiostatic pre-plating bismuth film on an MWNT glassy (GC) electrode. Bi/MWNT exhibits enhanced sensitivity detection as compared with the bare GC, and electrodes. Numerous key experimental parameters have been examined optimum analytical performance proposed With accumulation Co(II)-dimethylglyoxime complex at -0.8 V 200 s, reduction peak current proportional to concentration in range 4.0x10(-11)-1.0x10(-7) mol/L a lower limit 8.1x10(-11) mol/L. method has applied Successfully seawater lake water samples.
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