Formation of Ag2S nanowires and Ag2S/CdS heterostructures via simple solvothermal route

被引：23

作者：

Yan, Shancheng ^{[1
,2
]}

Shen, Kai ^{[3
]}

Xu, Xin ^{[1
]}

Shi, Yi ^{[2
]}

Wu, Jiansheng ^{[1
]}

Xiao, Zhongdang ^{[4
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Geog & Biol Informat, Nanjing 210046, Peoples R China

[2] Nanjing Univ, Sch Elect Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

[4] Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Bioelect, Chien Shiung Wu Lab, Nanjing 210096, Peoples R China

来源：

SYNTHETIC METALS | 2011年 / 161卷 / 15-16期

关键词：

Nanostructures; Crystal growth; CdS nanowire; Ag2S; SILVER SULFIDE NANOWIRES; COLLOIDAL SEMICONDUCTOR NANORODS; CATION-EXCHANGE; FORMATION MECHANISM; CDS NANOWIRES; NANOCRYSTALS; GROWTH; FABRICATION; NANOTUBES; TIPS;

D O I：

10.1016/j.synthmet.2011.05.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In our present work, Ag2S nanowires and Ag2S/CdS heterostructures have been successfully prepared in anhydrous ethanol through a simple solvothermal route. From the transmission electron microscopy (TEM) analysis, it is found that the factors influenced the final product are the concentration of Ag+, reaction temperature, reaction time, and solvent. Ag2S nanowires are formed by complete Ag+ cation exchange. Because of the selectivity for partial cation exchange, the reaction starts preferentially at the ends of the CdS nanowires to produce novel Ag2S/CdS heterostructures. In addition, as the two end facets of wurtzite CdS nanowires are crystallographically nonequivalent, the produced Ag2S/CdS heterostructures are asymmetric. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1646 / 1650

页数：5

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