文献类型：期刊文献

英文题名：Synthesis of eco-friendly lignin-betaine and its application for dye wastewater treatment

作者：Yu, Yang[1];Zhou, Xin[1];Jiang, Yinkui[1];Ji, Ying[2];Fang, Xiangchen[3];Zhang, Yan[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat,Shanghai Key Lab Adv Polymer, Shanghai 200237, Peoples R China;[2]Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China;[3]SINOPEC, Dalian Res Inst Petr & Petrochem, Dalian 116045, Liaoning, Peoples R China

年份：2023

卷号：192

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20225013254811);WOS:【SCI-EXPANDED(收录号:WOS:001026184200001)】；

语种：英文

外文关键词：Lignin; Betaine; Water treatment; Methylene blue; Wastewater

摘要：Lignin-based polymers have great potential for water treatment due to their environmental friendliness, biodegradability, and safety. Herein, lignin-betaine polymer (LB) was synthesized by Steglich esterification. The formation of ester groups between lignin and betaine was corroborated by Fourier transform-infrared spectroscopy (FT-IR), nuclear magnetic resonance hydrogen spectroscopy (NMR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), elemental analysis and thermogravimetric analysis (TGA). The LB was applied in the treatment of the methylene blue -containing wastewater, and demonstrated a dye removal rate of 98 %. Our study indicated that the dye removal was dominated by chemical adsorption. Moreover, the LB exhibited durable dye removal performance and maintained excellent reusability after four cycles. Collectively, the lignin-betaine polymer could provide an effective candidate for wastewater treatment, with specific potency for the removal of cationic dye.