Synthesis of SrHPO4/Fe3O4 magnetic nanocomposite and its application on Pb2+ removal from aqueous solutions

被引：9
作者：
Lu, Zhenzhen [1 ]
Tan, Ruiqin [1 ]
Chu, Weiwei [1 ]
Tang, Shihui [1 ]
Xu, Wei [2 ]
Song, Weijie [2 ]
机构：
[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
MICROCHEMICAL JOURNAL | 2018年 / 142卷
基金：
中国国家自然科学基金;
关键词：
Strontium hydrogen phosphate; Magnetic nanocomposite; Lead ions; Separation; ADSORPTIVE REMOVAL; WASTE-WATER; PB(II); HYDROXYAPATITE; NANOPARTICLES; EFFICIENT; CD(II); LEAD; CARBONATE; MECHANISM;
D O I：
10.1016/j.microc.2018.06.030
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Strontium hydrogen phosphate/Fe3O4 magnetic nanocomposite (M-SrHPO4) was successfully synthesized using a facile method of solution growing and applied to immobilize lead ions (Pb2+) from acidic aqueous solutions. M-SrHPO4 was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Brunauer Emmett Teller (BET) and physical property measurement system (PPMS). The resulting M-SrHPO4 possessed desirable magnetic property (25.214 emu.g(-1)), which contributed to the separation of solids from solutions after the immobilization process. The equilibrium removal capacity was 1215.5 mg.g(-1) for Pb2+ at PH = 4.5 within 150 min. The selective immobilization of Pb2+ was slightly affected by some competing cations such as Cr3+, Cd2+, Co2+ and Cu2+. It is revealed that the immobilization mechanism of Pb2+ was based on dissolution-precipitation theory. All of the experimental data indicated that M-SrHPO4 was promising for Pb2+ removal from acidic aqueous solutions.
引用
收藏
页码：152 / 158
页数：7
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