文献类型：期刊文献

英文题名：Preparation of lignin-based biochar with adjustable pore structure by HCOOK/SiO₂ modification for norfloxacin removal: Performance, DFT calculation and mechanism

作者：Cheng, Long[1] Wang, Kui[2] Wang, Shanyong[2] Lu, Hailong[3] Xu, Chunmin[1] Ye, Jun[2]

第一作者：Cheng, Long

通信作者：Cheng, L[1]

机构：[1]Jiangsu Univ Technol, Sch Resources & Environm Engn, Changzhou 213001, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China

年份：2024

卷号：702

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20243416912892);Scopus(收录号：2-s2.0-85201510836);WOS:【SCI-EXPANDED(收录号:WOS:001301056400001)】；

基金：This work is supported by the National Key Research and Develop-ment Program of China (2022YFB4201904) , Foundation of Key Labo-ratory of Biomass Energy and Material of Jiangsu Province (JSBEM-S-202314) and the National Science Fund for Excellent Young Scholars (32222058) .

语种：英文

外文关键词：Lignosulfonate; Porous carbon; Adsorption; Density functional theory; Norfloxacin

摘要：As the main by-product of chemical pulping, lignosulfonate is mostly burned directly as fuel with low added value. Therefore, the conversion of lignosulfonate into multifunctional porous carbon materials is necessary for green sustainable development and practical applications. In this work, the pore size of sodium lignosulfonatebased porous carbons (LBCs) was regulated by green activator HCOOK and mesoporous manufacturing agent SiO2 for the first time. The formation of micropores is beneficial to the improvement of surface area and adsorption performance, while the development of mesopores accelerates the mass transfer rate, but its adsorption performance is lower than that of micropores. The developed pore structure, sufficient oxygen content and graphene structure of LBCs lead to high adsorption performance for norfloxacin (NOR), reaching 341.9 mg g(-1) . Characterization and Density functional theory (DFT) results show that the sorption process includes pore filling, it-it it stacking, hydrogen bond and electrostatic interaction. In addition, pore volume and surface diffusion model (PVSDM) confirm that surface diffusion dominates the adsorption process. The above results provide an important reference value for the preparation and application of high-performance lignin- based adsorbents.