Fluoride removal performance and mechanism of superparamagnetic Fe3O4 nanoparticles

doi:10.5004/dwt.2021.27541

	Fluoride removal performance and mechanism of superparamagnetic Fe3O4 nanoparticles
	Zhang, Kaisheng 1; Zhu, Baisheng 1; Yang, Wu 2,3; Jia, Yong 1; Jiang, Peijuan 4; Zhang, Qiang 4; Kong, Lingtao 1; Liu, Jinhuai 1
刊名	DESALINATION AND WATER TREATMENT
	2021-09-01
卷号	233
关键词	Fluoride removal Adsorption Fe3O4 nanoparticles Ion-exchange Hydroxyl groups
ISSN号	1944-3994
DOI	10.5004/dwt.2021.27541
通讯作者	Zhang, Kaisheng(kszhang@iim.ac.cn) ; Kong, Lingtao(ltkong@iim.ac.cn)
英文摘要	Fluoride contamination in drinking water is one of the major problems worldwide imposing a serious threat to human health. For fluoride removal, the superparamagnetic Fe3O4 nanoparticles (Fe3O4 NPs) were successfully synthesized in a non-aqueous medium through a simple and facile hydrothermal reduction route. These nanoparticles had a mesoporous structure with a specific surface area of 70.14 m(2) g(-1). Fluoride adsorption behavior was investigated and the optimization of several experimental parameters was explored. The adsorption properties of the sample were excellent. The adsorption capacity could reach up to 70.64 mg g(-1) at 25 degrees C when the initial fluoride concentration was 200 mg L-1. Kinetic data were consistent with the pseudo-second-order model and also indicated the adsorption process was limited by the pore diffusion. The adsorption isotherms were found fitting well with the Freundlich model. The presence of bicarbonate, carbonate, and phosphate adversely affected the adsorption of fluoride. The revelation of the adsorption mechanism was based on Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy analysis, and zeta potential study. The results showed the surface hydroxyl groups and sulfate anions played important roles in the fluoride removal. In the magnetic hysteresis curves, the Fe3O4 nanoparticles exhibited a superparamagnetic characteristic with a saturation magnetization of 29.86 emu g(-1), which was beneficial for magnetic separation.
资助项目	State Key Research Development Program of China[2019YFC0408505] ; Natural Science Foundation of China[21976182] ; National Key Research Development Program of China Technology Boosts Economy 2020 ; Natural Science Foundation of Anhui province[2008085MB48] ; Program of China-Sri Lanka Joint Research and Demonstration Center for Water Technology and China-Sri Lanka Joint Center for Education and Research by Chinese Academy of Sciences, China
WOS关键词	ADSORPTION ; WATER ; FE ; ADSORBENT ; DEGRADATION ; OXIDE ; FERRIHYDRITE ; SPECTROSCOPY ; EQUILIBRIUM ; COMPOSITES
WOS研究方向	Engineering ; Water Resources
语种	英语
出版者	DESALINATION PUBL
WOS记录号	WOS:000706891300026
资助机构	State Key Research Development Program of China ; Natural Science Foundation of China ; National Key Research Development Program of China Technology Boosts Economy 2020 ; Natural Science Foundation of Anhui province ; Program of China-Sri Lanka Joint Research and Demonstration Center for Water Technology and China-Sri Lanka Joint Center for Education and Research by Chinese Academy of Sciences, China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125593]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Kaisheng; Kong, Lingtao
作者单位	1.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Environm Mat & Pollut Control Lab, Hefei 230031, Peoples R China 2.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 3.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China 4.Anhui Environm Sci & Technol Grp Co Ltd, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Kaisheng,Zhu, Baisheng,Yang, Wu,et al. Fluoride removal performance and mechanism of superparamagnetic Fe3O4 nanoparticles[J]. DESALINATION AND WATER TREATMENT,2021,233.
APA	Zhang, Kaisheng.,Zhu, Baisheng.,Yang, Wu.,Jia, Yong.,Jiang, Peijuan.,...&Liu, Jinhuai.(2021).Fluoride removal performance and mechanism of superparamagnetic Fe3O4 nanoparticles.DESALINATION AND WATER TREATMENT,233.
MLA	Zhang, Kaisheng,et al."Fluoride removal performance and mechanism of superparamagnetic Fe3O4 nanoparticles".DESALINATION AND WATER TREATMENT 233(2021).