AgCl and Ag/AgCl hollow spheres based on self-assemblies of a multi-amine head surfactant

doi:10.1016/j.jcis.2009.06.010

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	AgCl and Ag/AgCl hollow spheres based on self-assemblies of a multi-amine head surfactant
	Wang, Wei; Lu, Wensheng; Jiang, Long
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2009-10-01
卷号	338 期号:1 页码:270-275
关键词	Ag/agcl Hollow Spheres Surface Chelation Multi-amine Head Surfactant Photo-reduction
ISSN号	0021-9797
DOI	10.1016/j.jcis.2009.06.010
英文摘要	A simple method for fabricating Ag/AgCl hollow spheres was developed by using a multi-amine head surfactant C18N3 as a soft template. After adding AgNO(3) to micelles of C18N3 dispersed in HCl solution, Ag/AgCl hollow spheres were formed with diameters ranging from 100 nm to 1200 nm which were a function of aging time. The mechanical strength of the formed spheres was found to be very good, probably due to the uniquely structured C18N3 surfactant as well as the reinforcement effect of Ag/AgCl on the NH(2) terminal groups. The active species on the surfaces of hollow spheres, Ag(+) and Cl(-), remained almost unchanged when exposed to natural daylight for more than I year, showing a very good stability against light and environmental reduction. However, the obtained Ag(+) species on the surface could be transformed into Ag(0) quickly with high yield (ca. 90%) under UV light irradiation. The transfer process was studied by EDX spectra at different irradiation times. Thus the Ag/AgG hollow spheres may serve as useful precursors for many other noble metallic hollow spheres because Ag could be replaced by other noble metals such as Au and Pt with the aid of the galvanic replacement reaction. (C) 2009 Elsevier Inc. All rights reserved.
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000269401200037
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67781]
专题	中国科学院化学研究所
通讯作者	Jiang, Long
作者单位	Chinese Acad Sci, Inst Chem, Key Lab Colloid & Interface Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Lu, Wensheng,Jiang, Long. AgCl and Ag/AgCl hollow spheres based on self-assemblies of a multi-amine head surfactant[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2009,338(1):270-275.
APA	Wang, Wei,Lu, Wensheng,&Jiang, Long.(2009).AgCl and Ag/AgCl hollow spheres based on self-assemblies of a multi-amine head surfactant.JOURNAL OF COLLOID AND INTERFACE SCIENCE,338(1),270-275.
MLA	Wang, Wei,et al."AgCl and Ag/AgCl hollow spheres based on self-assemblies of a multi-amine head surfactant".JOURNAL OF COLLOID AND INTERFACE SCIENCE 338.1(2009):270-275.