Gold-loading magnetic core-shell organic/inorganic nanocomposites: Facile preparation and multiple properties

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	Gold-loading magnetic core-shell organic/inorganic nanocomposites: Facile preparation and multiple properties
	Chen, Lingnan ; Zeng, Birong ; Wu, Yueguang ; Xie, Jianjie ; Yu, Shirong ; Yuan, Conghui ; Luo, Weiang ; Xu, Yiting ; Dai, Lizong ; Ceng BR(曾碧榕) ; Luo WA(罗伟昂) ; Xu YT(许一婷) ; Dai LZ(戴李宗)
刊名	http://dx.doi.org/10.1002/pat.3352
	2014
关键词	Catalysts Emulsion polymerization Hydrophilicity Hydrophobicity Light absorption Magnetic properties Magnetic resonance imaging Magnetic separation Metal nanoparticles Nanocomposites Nanospheres Shells (structures)
英文摘要	Magnetic composite nanospheres (MCS) were first prepared via mini-emulsion polymerization. Subsequently, the hybrid core-shell nanospheres were used as carriers to support gold nanoparticles. The as-prepared gold-loading magnetic composite nanospheres (Au-MCS) had a hydrophobic core embed with γ-Fe3O4 and a hydrophilic shell loaded by gold nanoparticles. Both the content of γ-Fe3O4 and the size of gold nanoparticles could be controlled in our experiments, which resulted in fabricating various materials. On one hand, the Au-MCS could be used as a T2 contrast agent with a relaxivity coefficient of 362mg-1mlS-1 for magnetic resonance imaging. On the other hand, the Au-MCS exhibited tunable optical-absorption property over a wavelength range from 530nm to 800nm, which attributed to a secondary growth of gold nanoparticles. In addition, dynamic light scattering results of particle sizing and Zeta potential measurements revealed that Au-MCS had a good stability in an aqueous solution, which would be helpful for further applications. Finally, it showed that the Au-MCS were efficient catalysts for reductions of hydrophobic nitrobenzene and hydrophilic 4-nitrophenol that could be reused by a magnetic separation process. ? 2014 John Wiley & Sons, Ltd.
语种	英语
出版者	John Wiley and Sons Ltd
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87457]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Chen, Lingnan,Zeng, Birong,Wu, Yueguang,et al. Gold-loading magnetic core-shell organic/inorganic nanocomposites: Facile preparation and multiple properties[J]. http://dx.doi.org/10.1002/pat.3352,2014.
APA	Chen, Lingnan.,Zeng, Birong.,Wu, Yueguang.,Xie, Jianjie.,Yu, Shirong.,...&戴李宗.(2014).Gold-loading magnetic core-shell organic/inorganic nanocomposites: Facile preparation and multiple properties.http://dx.doi.org/10.1002/pat.3352.
MLA	Chen, Lingnan,et al."Gold-loading magnetic core-shell organic/inorganic nanocomposites: Facile preparation and multiple properties".http://dx.doi.org/10.1002/pat.3352 (2014).