文献类型：期刊文献

英文题名：Thiol-Ene Synthesis of Cysteine-Functionalized Lignin for the Enhanced Adsorption of Cu(II) and Pb(II)

作者：Jin, Can[1,2] Zhang, Xueyan[1] Xin, Junna[2] Liu, Guifeng[1] Chen, Jian[1] Wu, Guomin[1] Liu, Tuan[2] Zhang, Jinwen[2] Kong, Zhenwu[1]

第一作者：金灿;Jin, Can

通信作者：Kong, ZW[1];Zhang, JW[2]|[a0005be4642aed69bf127]孔振武;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Jiangsu, Peoples R China;[2]Washington State Univ, Composite Mat & Engn Ctr, Sch Mech & Mat Engn, Pullman, WA 99164 USA

年份：2018

卷号：57

期号：23

起止页码：7872-7880

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20182205256854);Scopus(收录号：2-s2.0-85047528043);WOS:【SCI-EXPANDED(收录号:WOS:000435525200017)】；

基金：This work was supported by the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (No. 2015BAD14B06), Fundamental Research Funds of Jiangsu Key Lab. of Biomass Energy and Material (No. JSBEM-S-201806), National Natural Science Foundation of China (No. 31400516), and Fundamental Research Funds for the Central Nonprofit Research Institution of Chinese Academy of Forestry (No. CAFYBB2014QB043).

语种：英文

外文关键词：Acetylcysteine - Adsorption - Amino acids - Chemical analysis - Functional materials - Lead compounds - Lignin - Metal ions - Metals

摘要：N-Acetyl-L-cysteine-functionalized lignin (CFL) was synthesized via UV-initiated thiol-ene click reaction. The structure and morphology of CFL were characterized by FT-IR, H-1 NMR, and SEM. Influences of the pH, dosage, contact time, concentration, and temperature on metal ions adsorption onto CFL were analyzed. Because of the introduction of more adsorption sites, the maximum adsorption capacities of CFL for Cu(II) and Pb(II) could reach 68.7 and 55.5 mg/g, which were 12.5 and 7.6 times that of raw lignin, respectively. The results from adsorption kinetics and isotherms suggest that the metal ions were adsorbed onto CFL by a monolayer chemisorption mechanism. The chemical interactions between CFL and metal ions through chelation were studied and confirmed by FT-IR and XPS analysis. The feasible construction of CFL through UV-initiated reaction has proven to be a promising "clickable" method in synthesizing lignin-based functional materials with designed modules and enhanced adsorption abilities for metal ions removal.