改性MMT/ZnO/GQDs纳米复合材料的制备及其抗菌性能  

Preparation and antibacterial properties of MMT/ZnO/GQDs nanocomposites

作　　者：刘俊莉 邵建真[2] 刘辉 蔡永华[1] LIU Jun-li;SHAO Jian-zhen;LIU Hui;CAI Yong-hua(Guangmingyuanguang Science&Technology Co.,Ltd.,Jiangmen 529728,China;School of Materials Science and Engineering,Shaanxi University of Science&Technology,Xi'an 710021,China)

机构地区：[1]广明源光科技股份有限公司,广东江门529728 [2]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2019年第1期113-117,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基础研究计划项目(2018JQ5083);陕西省教育厅专项科研计划项目(17JK0114);广明源光科技股份有限公司横向科研项目

摘　　要：采用水浴法制备改性MMT/ZnO/GQDs纳米复合材料,以蒙脱土(MMT)作为氧化锌(ZnO)/石墨烯复合量子点的载体,有效防止纳米粒子的团聚,同时抑制ZnO量子点表面光生电子和空穴的复合,系统地研究了改性剂种类、MMT用量等对复合材料抗菌性能的影响.通过扫描电子显微镜(SEM)、X射线粉末衍射仪(XRD)等对所得产物的组分、形貌和结构进行表征.结果表明:采用十八烷基三甲基氯化铵(OTAC)改性MMT制备的复合材料比采用十六烷基三甲基溴化铵(CTAB)改性MMT及未改性MMT制备的复合材料具有更优异的抗菌性能,当改性MMT/ZnO/GQDs复合材料中MMT与Zn的比例为12%时,其抗菌性能最佳,最小抑菌浓度达到1.8mg/mL.In this study,the modified MMT/ZnO/GQDs nanocomposites were prepared by water bath method with MMT as the carrier of ZnO/Graphene quantum dots conjugates to avoiding agglomeration of particles.The addition of graphene quantum dots(GQDs)could effectively suppress the combination of electrogenerated electrons and holes on the surface of ZnO.The effects of modifier’s type and the amount of MMT on the antibacterial properties of the composites were investigated in detail.The composition,morphology and structure of the obtained reaction products were characterized by scanning electron microscopy(SEM),X-ray powder diffractometry(XRD).The results showed that the composites prepared by oc-tadecyltrimethylammonium chloride(OTAC)modified MMT has more excellent antibacterial properties than that prepared with cetyltrimethylammonium bromide(CTAB)modified MMT and unmodified MMT.The Modified MMT/ZnO/GQDs composites indicated the superior antibacterial properties with the minimum inhibitory concentration was 1.8 mg/ml when the ratio of MMT to Zn in 12%.

关 键 词：MMT/ZnO/GQDs OTAC CTAB 抗菌性能 

分 类 号：O64[理学—物理化学]