Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption

doi:10.1016/j.cej.2020.125571

	Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption
	Xu, Kezhu 4; Wu, Jin 3; Fang, Qunling 4; Bai, Linfeng 2; Duan, Jinyu 4; Li, Jiaxing 3; Xu, Huajian 4; Hui, Ailing 4; Hao, Lingyun 1; Xuan, Shouhu 2
刊名	CHEMICAL ENGINEERING JOURNAL
	2020-10-15
卷号	398
关键词	Pollution treatment U(VI) ions Organic pollutants Magnetic separation Catalysis
ISSN号	1385-8947
DOI	10.1016/j.cej.2020.125571
通讯作者	Fang, Qunling(fql.good@hfut.edu.cn) ; Xuan, Shouhu(xuansh@ustc.edu.cn)
英文摘要	The organic pollutants and heavy metal ions are critical harmful substances in waste water because they destroy the ecological systems and lead diseases to animals and human beings. Unfortunately, the simultaneously remove of them in one system is still a challenge due to their different treating mechanism. Herein, a novel magnetic h-Fe3O4@Au/Polydopamine (Au/PDA) hybrid hollow nanosphere which can both absorb the potentially toxic U(VI) ions and catalyze the reduction of the 4-nitrophenol is reported. By using a simple in situ redox-oxidizing polymerization method, the h-Fe3O4 hollow nanosphere is well encapsulated by the Au/PDA hybrid shell to form the dual-functional magnetic hollow nanocomposites. Owing to the hollow interior, uniform and functional PDA coating, and high active Au nanocrystals, the final h-Fe3O4@Au/PDA hollow nanosphere possesses high potential in nanocatalysis, heavy metal ions adsorption, and drug delivery. Because of the PDA protection, the h-Fe3O4@Au/PDA nanosphere can even keep 90% activity after 7 cycling catalytic reactions on reduction of 4-nitrophenol. Similarly, the h-Fe3O4@Au/PDA exhibits a good adsorption effect for U(VI) in nuclear waste and its adsorption capability reaches to 82.9 mg.g(-1) by 6 successive adsorption-desorption experiments. Due to the facile magnetic separation, the h-Fe3O4@Au/PDA nanosphere can be easily collected by applying an external magnetic field. In summary, such a multifunctional recyclable h-Fe3O4@Au/PDA nanosphere with green and facile synthesis, easy manipulation, efficient adsorption performance and good catalytic activity possesses broad application potential in treatment of coexisting toxic water pollution.
资助项目	National Natural Science Foundation of China[11822209] ; Fundamental Research Funds for the Central Universities[PA2020GDKC0005]
WOS关键词	SIMULTANEOUS REMOVAL ; EFFICIENT REMOVAL ; ORGANIC-DYES ; U(VI) ; PERFORMANCE ; FABRICATION ; NANOCOMPOSITES ; NANOPARTICLES ; INTEGRATION ; REDUCTION
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000561589200001
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70654]
专题	中国科学院合肥物质科学研究院
通讯作者	Fang, Qunling; Xuan, Shouhu
作者单位	1.Jinling Inst Technol, Sch Mat Engn, Nanjing 211169, Peoples R China 2.Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Anhui, Peoples R China 4.Hefei Univ Technol, Sch Food & Biol Engn, Key Lab Metab & Regulat Major Dis, Anhui Higher Educ Inst, Hefei 230009, Peoples R China
推荐引用方式 GB/T 7714	Xu, Kezhu,Wu, Jin,Fang, Qunling,et al. Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption[J]. CHEMICAL ENGINEERING JOURNAL,2020,398.
APA	Xu, Kezhu.,Wu, Jin.,Fang, Qunling.,Bai, Linfeng.,Duan, Jinyu.,...&Xuan, Shouhu.(2020).Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption.CHEMICAL ENGINEERING JOURNAL,398.
MLA	Xu, Kezhu,et al."Magnetically separable h-Fe3O4@Au/polydopamine nanosphere with a hollow interior: A versatile candidate for nanocatalysis and metal ion adsorption".CHEMICAL ENGINEERING JOURNAL 398(2020).