中文摘要：

将银离子和铈离子交换至沸石中得到新型复合抗菌剂，采用XRD、XPS和TEM方法分析了它的结构形态，并研究了其抗菌性能和耐光性能。对含银和铈的量分别为3．2wt％和1．9wt％的4^#样品的结构分析结果表明：离子交换反应对沸石的晶体结构没有明显影响，但使它的晶面距增加；热处理温度在700℃以下对复合抗菌剂的晶体结构没有影响；复合抗菌剂大小均匀，呈八面体结构；抗菌活性组分银和铈在样品中以离子态存在。抗菌活性的评价结果表明，复合抗菌剂中的银和铈表现出协同抗菌作用，4^#样品对E．coli和S．aereus的最低抑菌浓度（MIC）分别为100mg·L^-1和300mg·L^-1。4^#复合抗菌剂还具有优良的光稳定性。

英文摘要：

A new type of zeolite composite antimicrobial agents was prepared by introducing silver and cerium into zeolite through ion-exchange method and characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS） and transmission electron microscopy （TEM）. The antimicrobial activity and light permanency of the antimicrobial agents were also evaluated. The results of structure analysis for 4^# sample, which contained mass fraction of 3. 2% of silver and 1. 9% of cerium, showed that the crystalline structure of zeolite was not obviously affected by the exchange reaction except its crystal space distance with a small enhancement, and that no significant changes in crystal structure of antimicrobial agent were also found by the heat treating at less than 700℃, as well as that the composite antimicrobial agent with uniform size possessed octahedron in shape. Moreover, the activity components of silver and cerium in 4 #： sample were in ionic state. The result of antimicrobial tests indicated that there existed cooperative effect of silver and cerium in composite antibacterial agent, and that the minimal inhibitory concentration （MIC） of 4^# sample against S. aereus and E. coli. were 100mg·L^-1 and 300mg·L^-1 respectively. In addition, 4^# sample showed excellent light permanency.