A wrinkle to sub-100 nm yolk/shell Fe3O4@SiO2 nanoparticles

doi:10.1007/s12274-016-1233-4

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	A wrinkle to sub-100 nm yolk/shell Fe3O4@SiO2 nanoparticles
	Ding, Hualin 1; Zhang, Yunxia 1; Xu, Sichao 1; Li, Guanghai 1,2
刊名	NANO RESEARCH
	2016-12-01
卷号	9 期号:12 页码:3632-3643
DOI	10.1007/s12274-016-1233-4
文献子类	Article
英文摘要	Yolk/shell nanoparticles (NPs), which integrate functional cores (likes Fe3O4) and an inert SiO2 shell, are very important for applications in fields such as biomedicine and catalysis. An acidic medium is an excellent etchant to achieve hollow SiO2 but harmful to most functional cores. Reported here is a method for preparing sub-100 nm yolk/shell Fe3O4@SiO2 NPs by a mild acidic etching strategy. Our results demonstrate that establishment of a dissolution-diffusion equilibrium of silica is essential for achieving yolk/shell Fe3O4@SiO2 NPs. A uniform increase in the silica compactness from the inside to the outside and an appropriate pH value of the etchant are the main factors controlling the thickness and cavity of the SiO2 shell. Under our "standard etching code", the acid-sensitive Fe3O4 core can be perfectly preserved and the SiO2 shell can be selectively etched away. The mechanism of regulation of SiO2 etching and acidic etching was investigated.
WOS关键词	MESOPOROUS SILICA NANOPARTICLES ; YOLK-SHELL NANOPARTICLES ; DRUG-DELIVERY ; MAGNETIC-RESONANCE ; CORE-SHELL ; NANOREACTOR ; NANOCOMPOSITES ; LUMINESCENT ; SPHERES ; FACILE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000388114400004
资助机构	National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Natural Science Foundation of China(51502298 ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; National Basic Research Program of China(2013CB934304) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; China Postdoctoral Science Foundation(2014M561844) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263) ; 51572263)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22001]
专题	合肥物质科学研究院_中科院固体物理研究所
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Sch Chem & Mat Sci, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Ding, Hualin,Zhang, Yunxia,Xu, Sichao,et al. A wrinkle to sub-100 nm yolk/shell Fe3O4@SiO2 nanoparticles[J]. NANO RESEARCH,2016,9(12):3632-3643.
APA	Ding, Hualin,Zhang, Yunxia,Xu, Sichao,&Li, Guanghai.(2016).A wrinkle to sub-100 nm yolk/shell Fe3O4@SiO2 nanoparticles.NANO RESEARCH,9(12),3632-3643.
MLA	Ding, Hualin,et al."A wrinkle to sub-100 nm yolk/shell Fe3O4@SiO2 nanoparticles".NANO RESEARCH 9.12(2016):3632-3643.