Hollow Fe3O4 nanospheres covered by phosphate-modified layered double hydroxides for the removal of uranium (VI) from water and soil

doi:10.1016/j.seppur.2022.120688

	Hollow Fe3O4 nanospheres covered by phosphate-modified layered double hydroxides for the removal of uranium (VI) from water and soil
	Zhang, Jianfeng 1,2; Wang, De 1,2; Cao, Ruya 1,2; Li, Jiaxing 1,2,3
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2022-05-01
卷号	288
关键词	Electromagnetic separation Uranium Adsorption Magnetic microsphere
ISSN号	1383-5866
DOI	10.1016/j.seppur.2022.120688
通讯作者	Li, Jiaxing(lijx@ipp.ac.cn)
英文摘要	Herein, a novel nanosphere composed of a magnetic h-Fe3O4 (hollow ferroferric oxide) core and a phos-LDH (phosphate-modified layered double hydroxide) shell was synthesized. The h-Fe3O4@phos-LDH nanocomposite with rich phosphate groups and large specific surface area (93.53 m(2)/g) can be exploited for uranium (VI) elimination. Batch experiments were conducted to investigate the impacts of various conditions (pH, time, and temperatures) on U(VI) removal process. The maximum capacity of U(VI) adsorbed by h-Fe3O4@phos-LDH reached up to 542.6 mg/g at 298.15 K, and the adsorption isotherms were followed the Langmuir model. Thermodynamics analyses illustrated that the U(VI) adsorbed by h-Fe3O4@phos-LDH was a spontaneous and endothermic process. The characterization analysis manifested that the phosphate groups of the phos-LDH shell played a leading role in adsorption. More importantly, the removal of U(VI) from the soil by h-Fe3O4@phos-LDH with the assistance of an electromagnetic separation system was also investigated. The results indicated that h-Fe3O4@phos-LDH could remove more than 90% of U(VI) in soil. These findings demonstrated this work could be considered as a valuable research for the environment remediation.
资助项目	National Key Research and Development Project[2020YFC1806602] ; National Science Foundation of China[21876178] ; Priority Academic Program Development of Jiangsu Higher Education Institutions
WOS关键词	ENHANCED ADSORPTION ; EFFICIENT REMOVAL ; U(VI) ; MICROSPHERES ; OXIDES
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000782997100002
资助机构	National Key Research and Development Project ; National Science Foundation of China ; Priority Academic Program Development of Jiangsu Higher Education Institutions
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131422]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Jiaxing
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Soochow Univ, Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jianfeng,Wang, De,Cao, Ruya,et al. Hollow Fe3O4 nanospheres covered by phosphate-modified layered double hydroxides for the removal of uranium (VI) from water and soil[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,288.
APA	Zhang, Jianfeng,Wang, De,Cao, Ruya,&Li, Jiaxing.(2022).Hollow Fe3O4 nanospheres covered by phosphate-modified layered double hydroxides for the removal of uranium (VI) from water and soil.SEPARATION AND PURIFICATION TECHNOLOGY,288.
MLA	Zhang, Jianfeng,et al."Hollow Fe3O4 nanospheres covered by phosphate-modified layered double hydroxides for the removal of uranium (VI) from water and soil".SEPARATION AND PURIFICATION TECHNOLOGY 288(2022).