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PVP保护下纳米银颗粒的液相化学还原法制备及表征
引用本文:王春霞,李英琳,徐 磊.PVP保护下纳米银颗粒的液相化学还原法制备及表征[J].贵金属,2014,35(4):30-34.
作者姓名:王春霞  李英琳  徐 磊
作者单位:1. 天津工业大学 纺织学院,天津,300387
2. 天津工业大学 材料科学与工程学院,天津,300387
基金项目:天津工业大学青年教师基金项目(029986)。
摘    要:以PVP为表面活性剂,甲酸铵为还原剂,采用液相还原法制备了纳米银颗粒。采用X射线衍射(XRD)、透射电子显微镜(TEM)和紫外-可见光吸收光谱(UV-Vis)对所制备样品进行表征。结果显示:当PVP与AgNO3的质量比为2.2:1,陈化时间24 h,得到立方块和六棱柱的银混合颗粒。

关 键 词:纳米化学  纳米银  化学还原法  PVP  陈化时间
收稿时间:2014/3/17 0:00:00

Synthesis and Characterization of Silver Nano-particles by Liquid Phase Chemical Deoxidization Method under the Protection of PVP
WANG Chunxi,LI Yinglin and XU Lei.Synthesis and Characterization of Silver Nano-particles by Liquid Phase Chemical Deoxidization Method under the Protection of PVP[J].Precious Metals,2014,35(4):30-34.
Authors:WANG Chunxi  LI Yinglin and XU Lei
Affiliation:School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
Abstract:Nano-silver particles were prepared by using polyvinyl pyrolidone as the dispersing agent and ammonium as the reducing agent. The resulting specimens were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-Vis adsorption spectrum. The result revealed that a mixture of cube and hexagonal prisms of nano-silver particles was obtained when the mass ratio of PVP to AgNO3 was 2.2:1 and the aging time was 24 hours.
Keywords:nanochemistry  nano-particles  chemical reduction method  PVP  aging time
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