Synthesis of a novel nanosilica-supported poly β-cyclodextrin sorbent and its properties for the removal of dyes from aqueous solution

被引：25

作者：

Chen, Jianxin ^{[1
,2
]}

Pu, Yunping ^{[2
]}

Wang, Chongbin ^{[3
]}

Han, Jian ^{[1
]}

Zhong, Yunlong ^{[2
]}

Liu, Kaili ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Marine Sci & Engn, Tianjin 300130, Peoples R China

[2] Hebei Univ Technol, Sch Chem Engn, Tianjin 300130, Peoples R China

[3] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2018年 / 538卷

关键词：

Core-shell; Dyes adsorption; SiO2@beta-CD; Suspension polymerization; ACTIVATED CARBON; ADSORPTION-KINETICS; EFFICIENT REMOVAL; ANIONIC DYES; POLYMERIZATION; EQUILIBRIUM; ADSORBENT; WATER; DECOLORIZATION; ISOTHERMS;

D O I：

10.1016/j.colsurfa.2017.11.048

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

beta-cyclodextrin, a type of molecule with a cavity structure and large number of hydroxyl groups, has great potential in water treatment, attributing to its highly adsorption ability. In this work, silica nanoparticles coated with beta-cyclodextrin (SiO2@beta-CD) as adsorbent have been successfully synthesized via distillation-precipitation polymerization. The composition, morphology and structure of SiO2@beta-CD nanoparticles were characterized by FTIR and TEM. The adsorption performance of SiO2@beta-CD nanoparticles were analyzed by the adsorption ability of bromophenol blue (BPB) and crystal violet (CV) in water solution. In addition, the dyes sorption processes have been thoroughly studied with both kinetic and equilibrium models. The results show that the adsorption rates for dyes is fast and the time evolution can be perfectly fitted using a pseudo-second-order kinetic model. The obtained maximum adsorption capacities exhibit an extremely good ability to remove dye at ambient temperature.

引用

页码：808 / 817

页数：10

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