硅烷偶联剂KH-500对Ag掺杂SiO2复合颗粒结构的影响-陕西师范大学学报期刊社网站

陕西师范大学学报（自然科学版）

物理学

硅烷偶联剂KH-500对Ag掺杂SiO2复合颗粒结构的影响

邓仲勋，李贵安*，焦飞，张亚娟

(陕西师范大学物理学与信息技术学院，陕西西安 710062)

邓仲勋,男,硕士研究生,研究方向为光学材料的制备及性能.* 通信作者：李贵安,男,教授,博士. E-mail : liguian66 @163. com.

摘要:

以硝酸银和正硅酸乙酯Tetraethyl orthosilicate (TEOS)为原料,乙醇为溶剂、甲醛为还原剂,KH-550为硅烷偶联剂,应用溶胶-凝胶法制备了不同结构的纳米银掺杂二氧化硅复合颗粒.分析了银掺杂二氧化硅复合颗粒的形成机理，并应用透射电子显微镜(Transmission Electron Microscope, TEM)、扫描电子显微镜(Scan Electron Microscope, SEM)、X射线衍射仪(X-ray Diffraction, XRD)及傅里叶变换红外光谱(Fourier Transform Infrared Spectrometer, FT-IR)等手段，对Ag/SiO2复合颗粒的结构进行了表征和分析.结果表明:实验制备的复合颗粒为球状，尺寸均匀，银颗粒在SiO2表面分布均匀，其粒径为3～8 nm；硅烷偶联剂KH-550会影响复合颗粒的结构，当KH-550量增加到05 mL后,复合颗粒发生明显团聚.

关键词：

银; 二氧化硅; 硅烷偶联剂; 纳米复合颗粒

收稿日期：

2010-02-20

中图分类号：

O4334；TB383

文献标识码：

文章编号：

1672-4291(2010)04-0023-05

基金项目：

国家自然科学基金资助项目(60678005) ; 陕西省自然科学基础研究计划资助项目(2006F39)

Doi:

Influence of silane coupling agent KH-550 on structure of sliver-silica composite grains

DENG Zhong-xun, LI Gui-an*, JIAO Fei, ZHANG Ya-jun

(College of Physics and Information Technology, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)

Abstract:

The sliver-silica composite grains with different structures were prepared by sol-gel technology using silver nitrate and Tetraethyl orthosilicate (TEOS) as raw material, alcohol as solvent, formaldehyde as reducing agent and silane coupling agent KH-550 as modifying agent. the formation mechanism is analyzed, the structures of composite grains were characterized by Transmission Electron Microscope (TEM), Scan Electron Microscope (SEM), X-ray diffraction (XRD)and Fourier Transform Infrared Spectrometer(FT-IR). The results indicated that the average size of composite grains was homogeneous and the shape was similar to sphericity, and the Ag grains(3～8 nm) were also well-distributed on the surface of silica. In addition, the structures of composite grains were affected by silane coupling agent KH-550 and the composite grains were agglomerated obviously as the volume of KH-550 up to 0.5 mL.

KeyWords:

sliver; silica; silane coupling agent; composite nanoparticles