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	反应性模板法合成硫化银中空球-银纳米粒子异质结构; Synthesis of Silver Sulfide Hollow Sphere-Silver Nanoparticle Heterostructures Based on Reactive Templates
	高继宁 ; 赵华博 ; 齐利民
	2012
关键词	硫化银 中空球 银纳米粒子 异质结构 反应性模板 化学转化 硫化亚铜 Silver sulfide Hollow sphere Silver nanoparticle Heterostructure Reactive template Chemical transformation Cuprous sulfide
英文摘要	以Cu2S中空球为反应性模板,通过在水溶液中与银离子的阳离子交换和氧化还原反应制备了大小均匀的Ag2S中空球-Ag纳米粒子异质结构,即Ag2S-Ag异质中空球.该异质结构中每个Ag2S中空球的直径约为600nm,壁厚约20-30nm,其表面均附着一个Ag纳米粒子.采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)和能量色散X射线谱(EDS)对所得Ag2S-Ag异质中空球的结构和组成进行了表征.若以CuS中空球为反应性模板,在相似转化条件下则主要得到不含Ag粒子的Ag2S中空球.该结果表明,Cu2S中的Cu(I)的还原性在Ag2S-Ag异质中空球的形成中发挥了重要作用....; Silver sulfide hollow sphere-silver nanoparticle heterostructures were prepared by the simultaneous cation exchange and oxidation-reduction reactions of Cu2S hollow spheres with Ag+ ions in aqueous solution. The obtained Ag2S-Ag hybrid hollow spheres consisted of Ag2S hollow spheres about 600 nm in diameter and 20-30 nm in thickness with a single Ag nanoparticle attached to the outer surface of each Ag2S hollow sphere. The products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDS). When CuS hollow spheres were used as the reactive template instead of Cu2S hollow spheres, Ag2S hollow spheres were the predominant product under similar reaction conditions, indicating that the Cu(I) in the Cu2S hollow spheres served as a reductant for reducing Ag ions to metallic Ag, and hence played a key role in the formation of the Ag2S-Ag hybrid hollow spheres. Furthermore, secondary deposition of Ag on the Ag2S-Ag hybrid hollow spheres resulted in the formation of larger Ag2S-Ag hybrid hollow spheres consisting of Ag2S hollow spheres with around a half of the surface coated by a Ag film.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000310181300031&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 10; 2487-2492; 28
语种	中文
出处	知网 ; 万方 ; SCI
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/79736]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	高继宁,赵华博,齐利民. 反应性模板法合成硫化银中空球-银纳米粒子异质结构, Synthesis of Silver Sulfide Hollow Sphere-Silver Nanoparticle Heterostructures Based on Reactive Templates. 2012-01-01.

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