氢氧化物
材料科学
离子
废水
层状双氢氧化物
矿化(土壤科学)
核化学
无机化学
废物管理
化学
氮气
有机化学
工程类
作者
Haoyuan Chi,Jikang Wang,Huijuan Wang,Shaoquan Li,Mufei Yang,Sha Bai,Changjuan Li,Xiaoliang Sun,Yufei Zhao,Yu‐Fei Song
标识
DOI:10.1002/adfm.202106645
摘要
Abstract The dealing/recycling of Ni‐containing wastewater pollution has aroused great attention both from environmental science and resource utilization perspectives. Herein, a classic CaFe‐layered double hydroxide (CaFe‐LDH) stabilizer, which exhibits a super‐stable mineralization efficiency for removing Ni 2+ ions with a maximum saturated removal capacity of 321 mg g −1 is prepared. This stabilizer can remove not only 10 000 mg L −1 Ni 2+ ions to a few mg L −1 , but also 1 mg L −1 Ni 2+ ions to 2 µg L −1 . Moreover, the CaFe‐LDH shows great mineralization capability for the real Ni‐containing electroplating solution. It is demonstrated by ex situ X‐ray diffraction and extended X‐ray absorption fine structure characterization that the isomorphous substitution of Ca 2+ by Ni 2+ in the laminate of LDH dominates the mineralization process, and the CaFe‐LDH is transformed to the corresponding NiCaFe‐LDH accordingly. Further application of the resultant NiCaFe‐LDH shows improved electrocatalytic oxygen evolution reaction and photocatalytic CO 2 reduction activities. This work paves great way for Ni 2+ ion removal from wastewater and utilization of the recycled Ni resource.
科研通智能强力驱动
Strongly Powered by AbleSci AI