Preparation of a novel nano-Fe3O4/triethanolamine/GO composites to enhance Pb2+/Cu2+ ions removal

被引：10
作者：
Ren, Hong-shan [1 ,2 ]
Cao, Zhan-fang [1 ,2 ]
Wen, Xin [1 ,2 ]
Wang, Shuai [1 ,2 ]
Zhong, Hong [1 ,2 ]
Wu, Zai-Kun [3 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China
[3] Wuhan Inst Technol, Sch Chem Engn & Pharm, Wuhan 430073, Hubei, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2019年 / 26卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Magnetic graphene oxide; Fe3O4; Adsorption; Triethanolamine; Lead ions; Copper ions; GRAPHENE OXIDE NANOSHEETS; SOLID-PHASE EXTRACTION; HEAVY-METAL POLLUTION; AQUEOUS-SOLUTIONS; LEAD(II) IONS; ADSORPTION; KINETICS; CR(VI); CARBON; WATER;
D O I：
10.1007/s11356-019-04316-w
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this paper, a magnetic nano-Fe3O4/triethanolamine/GO composite (TEA-GO-FE) was prepared by using graphene oxide (GO), triethanolamine (TEA), and ferric chloride. The result indicates that triethanolamine acted as an important role for the growing of Fe3O4 and adsorption ability of composite material. The synthesis mechanism of TEA-GO-FE was investigated through the medium of SEM-EDS, XRD, FT-IR, and TEM. The characterization results indicated Fe3O4 nanoparticles have been successfully loaded on the surface of graphene oxide and they were encapsulated by TEA and have excellent stability. According to the results of XRD, the general particle size of Fe3O4 on TEA-GO-FE was 27.5nm. In order to understand the adsorption properties of TEA-GO-FE for Pb2+ and Cu2+, this article uses a static adsorption study method. The optimized adsorption conditions are as follows: pH=5.0, temperature is 293.15K, and the ion concentration is 100mg/L. Under the optimized prerequisites, the adsorption capacities of Pb2+ and Cu2+ were 121.5mg/g and 68.7mg/g, separately. Through thermodynamic as well as kinetic studies, the adsorption process of Pb2+ and Cu2+ on TEA-GO-FE is a self-heating process.
引用
收藏
页码：10174 / 10187
页数：14
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