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投稿时间：2009-01-09 修订日期：2009-02-26
投稿时间：2009-01-09 修订日期：2009-02-26
中文摘要: 为了扩大纳米TiO2在可见光范围的吸收，进行在纳米TiO2中掺入Ag实验。以工业级偏钛酸、硝酸银为主要实验原料，采用一种简易的方法制备出Ag/TiO2纳米粒子，并通过X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电镜（TEM）、X射线光电子能谱（XPS）、紫外-可见光吸收光谱（UV-vis）对该粒子进行表征。结果表明，二氧化钛以锐钛型晶型，银以单质的形式存在于纳米复合粒子中；Ag的结合能367.476 eV（3d3/2）与373.453 eV（3d5/2）分别比纯银的结合能 368.4 eV（3d3/2）与374.4 eV（3d5/2）低，这是由于制备Ag/TiO2时煅烧温度较纯银高，银簇生长较大引起的；并显示复合粒子的粒径约为30 nm；Ag/TiO2纳米粒子感应波长明显红移，增强了纳米TiO2在可见光范围内的吸收。
Abstract:In order to enlarge the absorbed intensity of nano-TiO2 in visible light, Ag/TiO2 nanoparticles were prepared mainly from industrial H2TiO3 and AgNO3 by a simple method. It was characterized by X-ray powder diffraction(XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and UV-vis. XRD patterns showed that TiO2 existed as anatase and silver existed as elemental form in nano composite particles. XPS results showed that the binding energies of silver were 367.476 eV (3d3/2) and 373.453 eV (3d5/2), which were lower than those of simple silver (368.4 eV and 374.4 eV), since the preparation temperature of Ag/TiO2 was higher than simple silver and led to Ag cluster growth. SEM and TEM results showed that the particle size of nano-composite particles was about 30 nm. Moreover, UV-vis refractive spectrums showed that its photocatalytic wavelength was apparently red shift, and the absorbed intensity of nano TiO2 in visible light was enlarged.
keywords: Titanium dioxide silver nanoparticles characterization
文章编号：200900034 中图分类号： 文献标志码：
基金项目:横向研究资助项目（08H0377）
| 作者 | 单位 | |
| 郑红娟 | 高分子材料工程国家重点实验室,四川大学高分子研究所 | zhj6287@163.com |
| 张爱民 | 四川大学 高分子材料工程国家重点实验室,高分子研究所,四川 成都610065 | |
| 石瑞成 | 攀枝花钢铁研究院,四川 攀枝花617000 |
| Author Name | Affiliation | |
| Zheng Hong-Juan | zhj6287@163.com | |
| ZHANG Ai-min | ||
| SHI Rui-cheng |
作者简介:
引用文本：
郑红娟,张爱民,石瑞成.Ag/TiO2纳米粒子的制备与表征[J].工程科学与技术,2009,41(6):137-140.
Zheng Hong-Juan,ZHANG Ai-min,SHI Rui-cheng.Preparation and Characterization of Ag/TiO2 Nanoparticles[J].Advanced Engineering Sciences,2009,41(6):137-140.
引用文本：
郑红娟,张爱民,石瑞成.Ag/TiO2纳米粒子的制备与表征[J].工程科学与技术,2009,41(6):137-140.
Zheng Hong-Juan,ZHANG Ai-min,SHI Rui-cheng.Preparation and Characterization of Ag/TiO2 Nanoparticles[J].Advanced Engineering Sciences,2009,41(6):137-140.