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Preparation of Amine-Functionalized Fe3O4@SiO2 Nanoparticles for Removal of Cr(VI) from Aqueous Solution
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Xuqing WAN, Han SUN, Lei WANG, Xudong WANG, Wanying WANG, Tian PEI
Journal of the Chinese Ceramic Society | 2022, 50(5) : 1364 - 1374
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Journal of the Chinese Ceramic Society | 2022, 50(5): 1364-1374
• Research Articles •
Preparation of Amine-Functionalized Fe3O4@SiO2 Nanoparticles for Removal of Cr(VI) from Aqueous Solution
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Xuqing WAN, Han SUN, Lei WANG, Xudong WANG, Wanying WANG, Tian PEI
Affiliations
  • Department of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Research Institute of Membrane Separation Technology of Shaanxi Province, Key Laboratory of Membrane Separation of Shaanxi Province, Shaanxi Key Laboratory of Environment Engineering, Xi'an 710055, China

    • WAN Xuqing (1997-), male, Master candidate. E-mail:

About Author:

WAN Xuqing (1997-), male, Master candidate. E-mail:

Published: 2022-05-20 doi: 10.14062/j.issn.0454-5648.20210630
Outline
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Hexavalent chromium (Cr(VI)) has attracted much attention due to its high toxicity. In order to improve the efficiency of Cr(VI) removal by adsorption, core-shell structured polyethyleneimine (PEI) functionalized composite nanoparticles (Fe3O4@SiO2-NH2) were synthesized to remove Cr(VI) in water. The chemical structure, morphology and magnetic properties of the nanoparticles were investigated. The effects of initial concentration, contact time, solution pH value and inorganic anions on the Cr(VI) adsorption efficiency were analyzed. The results show that Fe3O4@SiO2-NH2 has an excellent performance in removing Cr(VI), and its maximum adsorption capacity is 251.83 mg/g. The adsorption process is pH value-dependent, spontaneous, and endothermic. Fe3O4@SiO2-NH2 is protonated, and the adsorption of Cr(VI) is completed due to the electrostatic attraction. Also, according to the results by X-ray photoelectron spectroscopy, part of Cr(VI) can be reduced to low-toxic Cr(VI). Fe3O4@SiO2-NH2 has a good reusability after removing Cr(VI) in water, and the duration for effective magnetic separation after the removal is just 50 s.

composite magnetic nanoparticles  /  core-shell structure  /  hexavalent chromium  /  adsorption
万徐庆, 孙涵, 王磊, 王旭东, 汪婉莹, 裴添. 胺化Fe3O4@SiO2纳米颗粒的制备及其对水溶液中Cr(VI)的去除. 硅酸盐学报, 2022 , 50 (5) : 1364 -1374 . DOI: 10.14062/j.issn.0454-5648.20210630
Xuqing WAN, Han SUN, Lei WANG, Xudong WANG, Wanying WANG, Tian PEI. Preparation of Amine-Functionalized Fe3O4@SiO2 Nanoparticles for Removal of Cr(VI) from Aqueous Solution[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (5) : 1364 -1374 . DOI: 10.14062/j.issn.0454-5648.20210630
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Year 2022 volume 50 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20210630
  • Receive Date：2021-08-07
  • Online Date：2026-10-22
  • Published：2022-05-20
Article Data
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History
  • Received：2021-08-07
  • Revised：2021-12-11
Funding
Affiliations
    Department of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Research Institute of Membrane Separation Technology of Shaanxi Province, Key Laboratory of Membrane Separation of Shaanxi Province, Shaanxi Key Laboratory of Environment Engineering, Xi'an 710055, China

Corresponding:

WANG Lei (1971-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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