CHEN Xiaoli a, b， WEI Liqiao a, b
（a. Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education and Shanxi Province; b. College of Materials Science and Engineering， Taiyuan University of Technology， Taiyuan 030024， China）
Abstract：Nano-Ag-loaded SiO2 (Ag-SiO2) antibacterial composite powders were prepared by chemical reduction method. The effects of Ag+ concentration on the performance of antibacterial powders were analyzed. The morphology and composition of Ag-SiO2 powders were characterized by SEM, EDS, XPS and TEM. The antibacterial properties were characterized by inhibition zone method and minimal inhibitory concentration (MIC) method. The results show that the silver mainly exists in reduction state and the average particle size is about 30 nm. The antibacterial performance of Ag-SiO2 antibacterial powders is enhanced and the color is deeper with the increase of Ag+concentration. The MIC is 94 mg/L.
Keywords：chemical reduction; nano-particle; antibacterial performance
文章编号：1008-5548（2013）06-0054-04
DOI：10.3969/j.issn.1008-5548.2013.06.013
收稿日期：2013-03-28，修回日期：2013-04-08，在线出版时间：2013-12-25。
第一作者简介：陈晓丽（1989—），女，硕士研究生，研究方向为纳米抗菌材料。 E-mail: shini2199@sina.com。
通信作者简介：魏丽乔（1954—），女，教授，硕士生导师，研究方向为纳米功能材料。 E-mail: 838183288@qq.com。
