EFFICIENT ADSORPTION OF Ce (III) ONTO POROUS CELLULOSE/GRAPHENE OXIDE COMPOSITE MICROSPHERES PREPARED IN IONIC LIQUID

被引：6
|
作者：
Hao, Yan [1 ]
Qu, Jing [1 ]
Liu, Zunyi [1 ]
Li, Songbo [1 ]
Yang, Hui [1 ]
Sai, Huazheng [1 ]
Yang, Huimin [1 ]
Peng, Jing [2 ]
Zhao, Long [3 ]
Zhai, Maolin [2 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Sch Chem & Chem Engn, Inst Appl Chem, 7 Arden Str, Baotou 014010, Peoples R China
[2] Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Minist Educ,Key Lab Polymer Chem & Phys, Beijing 100871, Peoples R China
[3] Huazhong Univ Sci & Technol, Inst Appl Electromagnet Engn, Wuhan 430074, Peoples R China
来源：
CELLULOSE CHEMISTRY AND TECHNOLOGY | 2021年 / 55卷 / 9-10期
基金：
中国国家自然科学基金;
关键词：
graphene oxide; microspheres; cellulose; ionic liquid; Ce (III) removal; AQUEOUS-SOLUTIONS; GRAPHENE-OXIDE; MECHANICAL-PROPERTIES; WASTE-WATER; METAL-IONS; LANTHANUM; REMOVAL; CERIUM; POLYSACCHARIDES; BIOSORPTION;
D O I：
10.35812/CelluloseChemTechnol.2021.55.100
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
A novel adsorbent made of porous cellulose/graphene oxide composite microspheres (PCGCM) was synthesized in [Bmim]Cl ionic liquid. The as-prepared PCGCM was evaluated for the removal of Ce (III) via static adsorption experiments. The results showed that the adsorption equilibrium of Ce (III) onto PCGCM was achieved within 50 min and the adsorption was highly pH dependent. An excellent adsorption capacity as high as 415.1 mg.g(-1) was obtained at a pH of 4.9, which was much higher than most adsorbents reported in the literature. The pseudo-second order kinetic model and Langmuir isotherm model were found to fit the adsorption behavior of PCGCM well. The XPS analysis confirmed that the adsorption was based on the ion exchange mechanism. Meanwhile, PCGCM could be regenerated with 1 mol.L-1 HCl for repetitious adsorption of Ce (III). This work provides an attractive approach for the removal of rare earth ions as pollutants.
引用
收藏
页码：1163 / 1175
页数：13
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