Preparation of FeS@Fe3O4 core-shell magnetic nanoparticles and their application in uranyl ions removal from aqueous solution

被引：13
作者：
Liu, Yan [2 ]
Yang, Pengfei [1 ,2 ]
Li, Qi [1 ]
Liu, Ying [1 ]
Yin, Jiang [1 ]
机构：
[1] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China
[2] Huaihua Univ, Hunan Engn Lab Preparat Technol Polyvinyl Alcohol, Huaihua 418000, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2019年 / 321卷 / 02期
关键词：
FeS; Fe3O4; Nanoparticles; Adsorption; Uranyl ions; EFFICIENT REMOVAL; URANIUM REMOVAL; GRAPHENE OXIDE; WASTE-WATER; ADSORPTION; IMMOBILIZATION; SEPARATION; PERFORMANCE; EXTRACTION; SPECIATION;
D O I：
10.1007/s10967-019-06626-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
FeS@Fe3O4 magnetic nanoparticles were prepared by ultrasonic-assisted method and characterized by TEM, FTIR, XRD, SEM, EDS, BET and VSM. The factors affecting the adsorption properties of uranyl ions by FeS@Fe3O4 were studied. Results show that the FeS@Fe3O4 nanoparticles have core-shell structure and superparamagnetism. Under the optimized conditions, the maximum adsorption capacity can reach 229.03mg/g. The optimum adsorption conditions were as follows: pH=6, temperature 80 degrees C, C-0=35mg/L, contact time 2.5h, adsorbent dosage 10mg. Adsorption kinetics and thermodynamic studies show that the adsorption process accords with the Freundlich isotherm adsorption model and the pseudo-second-order kinetic model.
引用
收藏
页码：499 / 510
页数：12
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