Recovery of lithium using H_(4)Mn_(3.5)Ti_(1.5)O_(12)/reduced graphene oxide/polyacrylamide composite hydrogel from brine by Ads-ESIX process

作     者：Jingsi Cui Huanxi Xu Yanfeng Ding Jingjing Tian Xu Zhang Guanping Jin Jingsi Cui;Huanxi Xu;Yanfeng Ding;Jingjing Tian;Xu Zhang;Guanping Jin

作者机构：Anhui Key Lab of Controllable Chemical Reaction&Material Chemical EngineeringSchool of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2022年第35卷第4期

页      面：20-28页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0822[工学-轻工技术与工程] 

基　　金：supported by the Ministry of Science and Technology of China(Science and Technology to Boost Economy 2020Key Project,SQ2020YFF0412719 and SQ2020YFF0404901) The Key Research and Development and Transformation Program Funding in Qinghai Province(2021-GX-105) Anhui Province Key Research and Development Plan(1804e03020316) 

主　　题：Lithium recovery Titanium doped lithium ion sieve Hydrogel Adsorption-electrically switched ion exchange(Ads-ESIX) 

摘      要：Powdery Li^(+)-imprinted manganese oxides adsorbent was widely used to the recovery of Li^(+),but there are some difficulties,such as poor stability in acid solution,inconvenience of operation and *** this work,a useful hydrogel composite based H_(4)Mn_(3.5)Ti_(1.5)O_(12)/reduced graphene oxide/polyacrylamide(HMTO-rGO/PAM)was fabricated by thermal initiation method with promising stable,conductive and selective *** resulting materials were characterized by field emission scanning electron microscope,infrared absorption spectrum,X-ray diffraction,X-ray photoelectron spectroscopy and electrochemical *** recovery of Li^(+)was investigated using HMTO-rGO/PAM from brine by a separated two-stage sorption statically and electrically switched ion exchange desorption *** adsorption capacity of 51.5 mg·g^(-1)could be achieved with an initial Li^(+)concentration of 200 mg·L^(-1)in pH 10,at 45℃ for 12 ***^(+)ions could be quickly desorbed by cyclic voltammetry(CV)in pH 3,0.1 mol·L^(-1)HCl/NH;Cl accompanying the exchange of Li^(+)and H+(NH;)and the transfer of LMTO-rGO/PAM to HMTO-rGO/PAM.