文献类型：期刊文献

英文题名：Surface-modified antibacterial TiO₂/Ag⁺ nanoparticles:: Preparation and properties

作者：Cheng, Qilin; Li, Chunzhong; Pavlinek, Vladimir; Saha, Petr; Wang, Huanbing

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Tomas Bata Univ, Fac Technol, Ctr Polymer, Zlin 76272, Czech Republic

年份：2006

卷号：252

期号：12

起止页码：4154

外文期刊名：APPLIED SURFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000237835100017)】；

语种：英文

外文关键词：TiO2/Ag+ nanoparticles; surface modification; APS; antibacterial property

摘要：Studies were performed on surface modification of antibacterial TiO2/Ag+ nanoparticles by grafting gamma-aminopropyltriethoxysilane (APS). The interfacial structure of the modified particles was characterized by Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and thermogravimetric analysis. The thickness of the surface layer was determined by using Auger electron spectroscopy (AES). The results show that APS is chemically bonded to the surface of antibacterial TiO2/Ag+ nanoparticles. Furthermore, the modified particles were mixed in PVC to prepare composites whose antibacterial property was investigated. The results suggest that surface modification has no negative effect on antibacterial activity of TiO2/Ag+ nanoparticles and PVC-TiO2/Ag+ composites exhibits good antibacterial property. (c) 2005 Elsevier B.V. All rights reserved.