Low-temperature plasma induced phosphate groups onto coffee residue-derived porous carbon for efficient U(Ⅵ) extraction

作     者：Zhongshan Chen Xuan He Qian Li Hui Yang Yang Liu Lining Wu Zhixin Liu Baowei Hu Xiangke Wang Zhongshan Chen;Xuan He;Qian Li;Hui Yang;Yang Liu;Lining Wu;Zhixin Liu;Baowei Hu;Xiangke Wang

作者机构：School of Life ScienceShaoxing UniversityShaoxing 312000China College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206Chin 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2022年第34卷第12期

页      面：1-13页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Key Research and Development Program of China(Nos.2018YFC1900105,2016YFA0203200,2017YFA0207002) the Beijing Outstanding Young Scientist Program and the Fundamental Research Funds for the Central Universities(No.2019MS044) 

主　　题：U(Ⅵ) Coffee residue Porous carbon Low-temperature plasma modification 

摘      要：For the continuous utilization of nuclear energy and efficient control of radioactive pollution, low-cost materials with high efficient U(VI) removal are of great importance. In this study, low temperature plasma method was applied for the successful modification of Ophosphorylethanolamine(O-PEA) on the porous carbon materials. The produced materials(Cafe/O-PEA) could adsorb U(VI) efficiently with the maximum sorption capacity of 648.54mg/g at 1 hr, T=298 K, and p H=6.0, much higher than those of most carbon-based composites. U(VI) sorption was mainly controlled by strong surface complexation. From FTIR,SEM-EDS and XPS analyses, the sorption of U(VI) was related to the complexation with-NH2, phosphate and-OH groups on Cafe/O-PEA. The low temperature plasma method was an efficient, environmentally friendly and low-cost method for surface modification of materials for the effective enrichment of U(VI) from aqueous solutions.