Rapid removal and mechanism investigation of low-concentration phosphate from wastewater by CuFe2O4/MIL-101(Fe) composite

被引：14
作者：
Liu, Qian [1 ]
Lin, Shanshan [1 ]
Khan, Sara [1 ]
Zhao, Yongjie [1 ]
Guan, Qing [1 ]
Geng, Zhi [1 ]
Guo, Yingna [2 ]
Chen, Lei [1 ]
Yang, Xia [1 ]
机构：
[1] Northeast Normal Univ, Sch Environm, Jingyue St 2555, Changchun 130117, Peoples R China
[2] Northeast Normal Univ, Sch Chem, Renmin St 5286, Changchun 130117, Peoples R China
来源：
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY | 2022年 / 12卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Low-concentration; Phosphate; Adsorption; CuFe2O4/MIL-101(Fe); Mechanism; METAL-ORGANIC FRAMEWORKS; SUPERIOR CATALYTIC-ACTIVITY; AQUEOUS-SOLUTION; EFFICIENT REMOVAL; SELECTIVE ADSORPTION; PHOSPHORUS REMOVAL; HIGH-CAPACITY; NANOCOMPOSITES; MIL-100(FE); FABRICATION;
D O I：
10.1007/s40097-021-00406-9
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Developing easily separable materials for efficient treatment of low-concentration phosphate which causes eutrophication of water bodies are full of challenges. A magnetic CuFe2O4/MIL-101(Fe) composite composed of hollow spheres CuFe2O4 and octahedrons MIL-101(Fe) was first fabricated via a facile solvothermal approach. CuFe2O4/MIL-101(Fe) (1.0 g center dot L-1) exhibited above 88.4% adsorption efficiency for low-concentration phosphate (5.0 mg center dot L-1) removal, over a wide pH ranging 2-12 at 293 K. Phosphate adsorption was a spontaneous endothermic process, in good association with Langmuir and pseudo-second-order kinetic model. The XPS and FT-IR analysis elucidated that electrostatic interaction and coordination exchange were main mechanisms. In addition, after four cycles, CuFe2O4/MIL-101(Fe) displayed 75.0% adsorption of phosphate, by treatment with external magnetic field separated and 0.1 mol center dot L-1 NaOH desorbed. Therefore, CuFe2O4/MIL-101(Fe) exhibited high selectivity and recycling for removing phosphate from wastewater. [GRAPHICS] .
引用
收藏
页码：117 / 127
页数：11
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