Solid-phase extraction and separation of indium with P_(2)O_(4)-UiO-66-MOFs (di-2-ethylhexyl phosphoric acid-UiO-66-metal-organic frameworks)

作     者：Wan-Yi Zeng Minzhong Huang Minglai Fu Wan-Yi Zeng;Minzhong Huang;Minglai Fu

作者机构：Key Laboratory of Urban Pollutant ConversionInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of SciencesBeijing 100049China School of Electromechanical EngineeringGuangdong University of TechnologyGuangzhou 510006China Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution ControlCollege of Civil EngineeringHuaqiao UniversityXiamen 361021China 

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

年 卷 期：2023年第127卷第5期

页      面：833-843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）] 080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 0703[理学-化学] 

基　　金：supported by the Strategic Priority Research Program(A)of the Chinese Academy of Sciences(No.XDA23030302) the Key Programs of the Chinese Academy of Sciences(No.KFZD-SW-315) the Start-Up Foundation from Huaqiao University(No.20BS109) 

主　　题：P_(2)O_(4)-UiO-66-MOFs(di-2-Ethylhexyl phosphoric acid-UiO-66-metal-organic frameworks) Solid-phase extraction Adsorption Indium(III) 

摘      要：Compared with the traditional liquid–liquid extraction method,solid-phase extraction agents are of great significance for the recovery of indium metal due to their convenience,free of organic solvents,and fully exposed *** this study,P_(2)O_(4)(di-2-ethylhexyl phosphoric acid)was chemically modified by using UiO-66 to form the solid-phase extraction agent P_(2)O_(4)-UiO-66-MOFs(di-2-ethylhexyl phosphoric acid-UiO-66-metal-organic frameworks)to adsorb In(Ⅲ).The results show that the Zr of UiO-66 bonds with the P-OH of P_(2)O_(4) to form a composite P_(2)O_(4)-UiO-66-MOF,which was confirmed by X-ray photoelectron spectroscopy(XPS)and Fourier transform infrared spectroscopy(FT-IR).The adsorption process of indium on P_(2)O_(4)-UiO-66-MOFs followed pseudo first-order kinetics,and the adsorption isotherms fit the Langmuir adsorption isotherm *** adsorption capabilities can reach 192.8 mg/*** five consecutive cycles of adsorption-desorption-regeneration,the indium adsorption capacity by P_(2)O_(4)-UiO-66-MOFs remained above 99%.The adsorption mechanism analysis showed that the P=O and P-OH of P_(2)O_(4) molecules coated on the surface of P_(2)O_(4)-UiO-66-MOFs participated in the adsorption reaction of *** this paper,the extractant P_(2)O_(4) was modified into solid P_(2)O_(4)-UiO-66-MOFs for the first *** work provides a new idea for the development of solid-phase extractants for the recovery of indium.