文献类型：期刊文献

英文题名：Clickable Synthesis of 1,2,4-Triazole Modified Lignin-Based Adsorbent for the Selective Removal of Cd(II)

作者：Jin, Can[1,2,3] Zhang, Xueyan[1] Xin, Junna[2] Liu, Guifeng[1] Wu, Guomin[1] Kong, Zhenwu[1] Zhang, Jinwen[2]

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, Natl Engn Lab Biomass Chem Utilizat, Jiangsu Prov Key Lab Biomass Energy & Mat Jiangsu, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Washington State Univ, Composite Mat & Engn Ctr, Sch Mech & Mat Engn, POB 641806, Pullman, WA 99164 USA;[3]Washington State Univ, POB 641806, Pullman, WA 99164 USA

年份：2017

卷号：5

期号：5

起止页码：4086-4093

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20171803629625);Scopus(收录号：2-s2.0-85018370698);WOS:【SCI-EXPANDED(收录号:WOS:000400634900058)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant 31400516) and Fundamental Research Funds for the Central Nonprofit Research Institution of Chinese Academy of Forestry (Grant CAFYBB2014QB043).

语种：英文

外文关键词：bioadsorbents; click reaction; lignin

摘要：Development of bioadsorbents for efficient removal of heavy metal ions from contaminated water is of great interest but still challenging. In this study, a 1,2,4-triazole-3-thiol modified lignin-based adsorbent (LBA) was synthesized through a UV-initiated thiol-yne click reaction chemistry for Cd(II) adsorption. The structure of LBA, prepared by thiol-yne addition reaction, was confirmed and characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance, and elemental analysis. Effects of pH, contact time, initial metal concentration, and temperature on the adsorption of Cd(II) on LBA were studied. Due to multiple thio-triazole units as binding sites, LBA was found to exhibit an adsorption capacity that was 8.6 times that of the raw lignin for Cd(II) adsorption. Pseudo-second order and Langmuir models were utilized to describe the adsorption kinetics and isotherms, respectively. Furthermore, the study of adsorption selectivity suggested that LBA had high selectivity for adsorbing Cd(II) ions in the presence of other coexisting metal ions in the aqueous solution. The successful synthesis of LBA via a facile thiol-yne click reaction demonstrates a new synthesis method for preparing lignin-based functional materials with modular units and promising adsorption capacity for the removal of heavy metal ions from wastewater.