Removal of complexation metal from plating effluents is always a problem. In this work, a core-shell structure zero-valent iron@nitrogen/graphite carbon nitride doped carbon (ZVI@C-N/g-C₃N₄) composite was prepared and used to activate peroxymonsulfate (PMS) to treat complexation nickel simulated wastewater. Compared with ZVI, ZVI@C-N/g-C₃N₄ significantly enhanced the efficiency and repeatability of PMS activation. For 45 min treatment, the removal efficiency of 50 ppm Ni-EDTA and Ni-citrate simulated wastewater reached 95.8 % and 100 %, respectively. The excellent performance of ZVI@C-N/g-C₃N₄ is attributed to that the amino groups of nitrogen in C-N/g-C₃N₄ shell can regulate the transmission rate of electrons released from ZVI core by adjusting the transmission rate of H⁺, so as to improve the electron utilization efficiency of PMS activation.

从电镀废水中去除络合金属始终是一个问题。在这项工作中，制备了核-壳结构零价铁@氮/石墨碳氮化物掺杂的碳（ZVI @ CN / gC ₃ N ₄）复合材料，并用于活化过氧硫酸盐（PMS）以处理络合镍模拟废水。与ZVI相比，ZVI @ CN / gC ₃ N ₄显着提高了PMS激活的效率和可重复性。对于45分钟的处理，50 ppm Ni-EDTA和柠檬酸镍模拟废水的去除率分别达到95.8％和100％。ZVI @ CN / gC ₃ N ₄的优异性能归因于CN / gC ₃ N中氮的氨基₄壳可以通过调节H ⁺的传输速率来调节ZVI核释放的电子的传输速率，从而提高PMS活化的电子利用效率。