β-Cyclodextrin carbon-based nanoparticles with a core-shell-shell structure for efficient adsorption of crystal violet and bisphenol A  

作　　者：Tian Tian Mengling Liu Yinhui Li Jian Han Liang Ren Heike Lorenz Qing Wu Jianxin Chen 

机构地区：[1]School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China [2]MDPI(Tianjin)Technology Services Co.,Ltd.,Tianjin 300130,China [3]Max-Planck-Institut für Dynamik komplexer technischer Systeme,Sandtorstrasse 1,39106 Magdeburg,Germany [4]School of Artificial Intelligence,Hebei University of Technology,Tianjin 300130,China

出　　处：《Particuology》2022年第3期88-97,共10页颗粒学报（英文版）

基　　金：We sincerely appreciate the supports of the National Natural Science Foundation of China(Key Program U20A20140);the Open Foundation of State Key Laboratory of Chemical Engineering(No.SKL-ChE-20B06).

摘　　要：Textile wastewater contains highly toxic,nondegradable,carcinogenic organic pollutants,causing severe damage to the ecological environment.In this work,β-cyclodextrin carbon-sphere-based nanocomposite(CS/SiO_(2)@β-CD)with a core-shell-shell configuration was prepared by hydrothermal synthesis and subsequent sedimentation-azeotropic distillation with SiO_(2)as intermediate layer for the removal of crystal violet(CV)and bisphenol A(BPA).The chemical structure and morphology of the CS/SiO_(2)@β-CD were characterized by FT-IR,SEM and TEM.The effects of contact time,pH,temperature and initial concentration of the absorbates on the adsorption property were explored.The CS/SiO_(2)@β-CD showed excellent adsorption capacity on CV and BPA,and the maximum adsorption capacity was 87.873 mg g^(-1)and 165.095 mg g^(-1),respectively.Their adsorption process was in line with the pseudo-second-order and pseudo-first-order kinetic models,respectively.The adsorption thermodynamics could be better fitted by Langmuir model than by Freundlich model.The calculated thermodynamic parameters(-ΔG0,ΔS0 andΔH0)illustrated the adsorption of CV was endothermic,in contrast,the adsorption of BPA was exothermic process.Furthermore,the CS/SiO_(2)@β-CD showed excellent recovery performance,making it a potential adsorbent for the practical treatment of textile wastewater.

关 键 词：CYCLODEXTRIN ADSORPTION Textile wastewater Kinetic and thermodynamic models 

分 类 号：O64[理学—物理化学]