Ag2S nanorice: Hydrothermal synthesis and characterization study*

被引：23
|
作者：
Lv, Liyun [1 ]
Wang, Hong [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 121卷
基金：
中国国家自然科学基金;
关键词：
Nanoparticles; Semiconductor; Hydrothermal; Spectroscopy; Blue shift; NANOPARTICLES; NANOCRYSTALS; TEMPERATURE; SIZE;
D O I：
10.1016/j.matlet.2014.01.121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Silver sulfide (Ag2S) nanorice was synthesized by reaction between silver ammonia complex cation ([Ag(NH3)(2)](+)) and sodium sulfide nonahydrate (Na2S . 9H(2)O) in the presence of polyvinylpyrrolidone (PVP) through a hydrothermal method. The obtained products were characterized by X-ray powder diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis) and transmission electron microscopy (TEM). It was found that the as-prepared Ag2S nanocrystal was monoclinic, and the formation of the rice-shaped feature depended mainly on the type of silver source, influence of the pyrrolidone rings of the PVP, reaction time and temperature. Both the remarkable blue shift and the large band gap energy of 4.4 eV revealed that the tip part of the as-prepared Ag2S nanorice could result in quantum confinement effect. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：105 / 108
页数：4
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