载银介孔SBA-15抗菌剂的制备及表征

Preparation and characterization of Ag loaded mesoporous SBA-15 antibacterial agent and its characterization

为解决有机抗菌剂耐热性差、易分解和使用寿命短的问题,选用介孔无机材料SBA-15作为载体,以γ-氨丙基三乙氧基硅烷(APTES)为修饰剂,采用嫁接的方法对介孔SBA-15进行改性,使其表面接枝氨基官能团,采用常规AgNO3溶液浸渍法,制得抗菌性能优良、杀菌效果持久的广谱抗菌剂。通过X射线衍射(XRD)、红外光谱(FT-IR)、电子能谱(EDS)和热重(TG)等对材料的结构和特性进行了表征。XRD和TEM研究表明,实验制备的抗菌剂载体SBA-15具有规则有序的孔道结构。FT-IR和TG数据显示,介孔材料表面接枝了氨基。EDS及TEM研究表明,抗菌剂的有效成分银成功负载到载体SBA-15上。

In order to solve the problems of poor thermostability,easy decomposition and short life of organic antibacterial agents,the mesoporous SBA-15 was chosen as carriers and γ-aminopropyl-triethoxysilane（APTES） as modifier,the mesoporous SBA-15 was modified by grafting amino-functional group onto its surface.The conventional AgNO3 solution dipping method was adopted for loading Ag on SBA-15,and an antibacterial agent was prepared,which has good quality,wide spectrum and permanent antibacterial effect.XRD,FT-IR,EDS and TG were used to characterize the agent.XRD and TEM examination demonstrate that the prepared antibacterial carrier SBA-15 has regular porous structure.FT-IR and TG data show that the amino functional groups were grafted onto the mesoporous SBA-15.EDS and TEM analysis indicates that the effective antibacterial component Ag has successfully loaded on SBA-15.