麦饭石无机抗菌剂的制备及性能

以麦饭石为载体、Ag⁺和Zn²⁺为抗菌离子，通过液相离子交换反应，制备载银锌的麦饭石无机抗菌剂。采用抑菌率对所得产物的抗菌性进行检测，采用XRD、SEM对产物的结构与形貌进行表征，并采用缓释法对产物的耐久性进行研究。实验结果表明：在反应时间为4 h，反应温度为60℃，Ag⁺和Zn²⁺浓度分别为0.1、2 mol·L^-1，pH值为8的条件下，制备的麦饭石抗菌剂具有优异抗菌性和耐久性。抗菌机理初步分析为通过离子交换或吸附进入麦饭石结构内的Ag⁺和Zn²⁺能从载体中持久缓慢地释放出来，与细菌细胞作用，杀灭细菌，从而保持该抗菌剂良好的抗菌能力。

Preparation and properties of Maifanshi inorganic antibacterial agent

The inorganic antibacterial agents were prepared with Maifanshi containing Ag⁺ and Zn²⁺ by liquid ion exchanging reaction in this paper.The antibacterial activities of the as-prepared Maifanshi antibacterial agents were examined by Bacteriastasis ratio, and the microstructures of it were characterized by XRD and SEM, and the durability of it were studied by Sustained-release method.The results show that the excellent antibacterial activities and long durability of Maifanshi antibacterial agents have been obtained by the reaction of 0.1 mol·L^-1 Ag⁺ and 2 mol·L^-1 Zn²⁺ with Medical stone powers in the solution of pH 8 for 4 h at 60℃.The reasons for causing the above results are that silver and zinc ions entering the framework of Maifanshi through ion exchanging and adsorption can be released slowly to kill bacteria.