以石墨烯为改性剂,醋酸锌为锌源,采用水热合成法制备石墨烯/ZnO纳米复合物。随着石墨烯在反应体系中用量的增加,石墨烯/ZnO纳米复合物的形貌和抗菌性能存在显著差异。m(石墨烯):m(ZnO)为0.02时,纳米ZnO在石墨烯片层表面负载分布均一,石墨烯/ZnO纳米复合物尺寸较小,抗菌性能较纯纳米ZnO显著提高,最低抑菌浓度从313μg/mL降至157μg/mL。石墨烯/ZnO纳米复合物涂覆玻璃纸的透光性能优良,对李斯特氏菌和大肠杆菌的抑菌率分别为98.3%和99.1%,可作为新型功能材料用于食品、药品的抗菌包装。
Graphene/ZnO nanocomposites were prepared by hydrothermal method,in which zinc acetate was used as the source of Zn2+ and graphene as the modifier.The morphology and antibacterial properties of prepared nanoparticles significantly varied with the ratio of graphene in the reaction system.The particle size of nanocomposites was relatively small when the m(graphene):m(ZnO) ratio was 0.02,and the distribution of ZnO nanoparticles on the surface of graphene was relatively homogeneous.The antibacterial potency of nanocomposites increased significantly compared to ZnO,the minimum inhibitory concentration (MIC) reduced from 313μg/mL to 157μg/mL.The nanocomposites coated cellophane showed good light transmission performance,with an inhibitory rate against Listeria monocytogens and Escherichia coli of 98.3% and 99.1%,respectively.The nanocomposites coated film can be used as a potential new functional material in food and pharmaceutical antimicrobial packaging.
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基金资助
制浆造纸科学与技术教育部/山东省重点实验室开放基金资助(KF201617);广西高等学校科学研究项目(KY2015YB007);广西清洁化制浆造纸与污染控制重点实验室主任基金项目(ZR201604)
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