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采用一种电化学技术去除模拟工业水中的Cd~(2+).单壁碳纳米管钛网电极被用做阴阳极,考察不同电极组合、溶液pH、应用电压和电解质浓度对Cd~(2+)去除率的影响.实验结果表明,阳极为Ti Net,阴极为SWCNTs@Ti Net,溶液pH为8.0,应用电压为2.5 V,电解质质量浓度为20.00 g·L-1为Cd~(2+)去除的最佳实验条件.XPS和SEM结果表明,Cd~(2+)的去除包括了在阴极上生成Cd(OH)_2和电吸附在阴极SWCNTs上.最高去除率可达90%左右.
An electrochemical technique was used to remove Cd2 + in simulated industrial water. Single-walled carbon nanotubes (CNTs) titanium mesh electrodes were used as cathodes and cathodes to investigate the effects of different electrode combinations, solution pH, applied voltage and electrolyte concentration on Cd2 +) Removal rate.The experimental results show that the anode is Ti Net, the cathode is SWCNTs @ Ti Net, the solution pH is 8.0, the application voltage is 2.5 V, the electrolyte concentration is 20.00 g · L -1 is Cd 2+ ) XPS and SEM results show that the removal of Cd 2+ includes the formation of Cd (OH) 2 on the cathode and the electrocatalytic adsorption on the cathode SWCNTs, and the maximum removal rate can reach about 90%.