Ionic liquid modified molybdenum disulfide and reduced graphene oxide magnetic nanocomposite for the magnetic separation of dye from aqueous solution

被引：27

作者：

Ni, Rui ^{[1
]}

Wang, Yuzhi ^{[1
]}

Wei, Xiaoxiao ^{[1
]}

Chen, Jing ^{[1
]}

Xu, Panli ^{[1
]}

Xu, Wei ^{[1
]}

Meng, Jiaojiao ^{[1
]}

Zhou, Yigang ^{[2
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

[2] Cent S Univ, Coll Basic Med, Dept Microbiol, Changsha 410083, Hunan, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2019年 / 1054卷

基金：

中国国家自然科学基金;

关键词：

Molybdenum disulfide; Reduced graphene oxide; Ionic liquid; Methylene blue; Magnetic separation; SOLID-PHASE EXTRACTION; HIGHLY EFFICIENT; ORGANIC CONTAMINANTS; ADSORPTION; REMOVAL; NANOSHEETS; ADSORBENT; FACILE; COMPOSITES; POLLUTANTS;

D O I：

10.1016/j.aca.2018.12.037

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel ionic liquid (IL) modified magnetic nanocomposite (mag-MoS2-RGO), which was composed of molybdenum disulfide (MoS2) and reduced graphene oxide (RGO), was firstly synthesized and characterized (mag-MoS2-RGO-IL). Compared with mag-MoS2-RGO, the mag-MoS2-RGO-IL exhibited the higher adsorption capacity of 143.9 mg/g for methylene blue (MB) under optimum conditions. Experimental results were imitated by adsorption isotherms and kinetic models, revealing a monolayer adsorption on the homogeneous surface governed by chemisorption. The removal rate was maintained 78% after 5 cycles of regeneration, indicating its good reutilization. Methodological study suggested that the method possessed excellent repeatability, precision and stability. The recoveries from the real samples were in the range of 87.0-98.8% with relative standard deviation of <= 5.2%. Benefiting from composite structure and magnetic Fe3O4, the stable magnetic adsorbent can be quickly separated from aqueous solution. All of above proves that the prepared mag-MoS2-RGO-IL has great application potential in dye separation. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：47 / 58

页数：12

共 39 条

[1] Removal of reactive red-120 and 4-(2-pyridylazo) resorcinol from aqueous samples by Fe3O4 magnetic nanoparticles using ionic liquid as modifier [J].