基于玉米芯衍生多孔碳材料用于电沉积去除铜离子的研究
张秀峰 , 周顺利 , 耿宁露 , 周香 , 柏源 , 韦飞 , 朱鸿 , 雍佳成 , 张丹彤 , 徐海涛
现代化工 ›› 2026, Vol. 46 ›› Issue (6) : 225 -232.
基于玉米芯衍生多孔碳材料用于电沉积去除铜离子的研究
Study on the removal of copper ions via electrodeposition using corn cob-derived porous carbon materials
随着工业化进程的快速推进,以含铜废水在内的重金属废水治理成为重要环境问题。以玉米秸秆为原料,经KCl-尿素协同活化改性后添加导电炭黑(SP)制备形成生物质炭电极。通过调控电极的制备条件,优化得到以600℃碳化秸秆、以氯化钾(KCl)与SP质量比为8∶2∶1制备形成的CSPC-600-4-8电极对于铜离子的去除效率最高。同时对电沉积溶液体系进行了探究,优化溶液条件为pH=5、电压5 V的条件下其对于铜离子的去除率达到86%。而X射线光电子能谱(XPS)、X射线衍射(XRD)等表征其石墨化多孔结构与氮官能团,揭示其对Cu2+电沉积速率的促进机制,为生物质电极的制备提供了方法,为含铜废水处理提供科学依据与技术支持。
With the rapid advancement of industrialization,the treatment of heavy metal wastewater,including copper-containing wastewater,has become a major environmental issue.In this study,corn straw was used as the raw material to prepare a biochar electrode via synergistic activation modification with KCl-urea,followed by the addition of conductive carbon black (SP).By adjusting the electrode preparation conditions,the optimized CSPC-600-4-8 electrode—fabricated by carbonizing straw at 600℃ with a mass ratio of potassium chloride (KCl) to SP of 8∶2∶1—achieved the highest removal efficiency toward copper ions.Meanwhile,the electrodeposition solution system was investigated,and under the optimized solution conditions of pH=5 and an applied voltage of 5 V,the removal rate of copper ions reached 86%.Characterizations including X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) verified its graphitized porous structure and nitrogen-containing functional groups,revealing the mechanism by which these features accelerate the electrodeposition rate of Cu2+.This work provides a feasible method for the preparation of biomass-based electrodes and offers scientific and technical support for the treatment of copper-containing wastewater.
biomass-derived carbon material / electrodeposition / copper ion
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国能徐州发电有限公司横向科技项目“烟塔合一高盐循环水深度处理技术研究”(HB2023WK029)
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