ZnO@cellulose纳米复合材料的制备,表征及其抗菌性能研究
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- 英文论文题名：Synthesis, characterization and antibacterial activity of ZnO@cellulose nano-composite
- 论文作者：赵思魏 ; 郭元茹
- 英文论文作者：Si-Wei Zhao ; Yuan-Ru Guo ; Key Laboratory of Bio-based Material Science & Technology (Ministry of Education) ; College of Material Science and Engineering ; Northeast Forestry University
- 年：2016
- 作者机构：东北林业大学生物质材料科学与技术教育部重点实验室材料科学与工程学院;
- 论文关键词：氧化锌 ; 纤维素 ; 抗菌性能 ; 纳米复合材料
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB332
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：350k
- 原文格式：D
- 会议级别：全国
摘要
采用水热合成法制备了粒子线多级结构的纳米ZnO@cellulos复合材料。ZnO纳米晶体在生长过程中是沿着纤维素纤维的方向长大。XRD分析表明我们所制备的ZnO为六方纤锌矿结构,并具有高纯度和结晶度。同时,XRD谱图上有I型结构的纤维素衍射峰出现,表明所制备的复合材料中,纤维素为I型纤维素。SEM分析发现。ZnO@cellulose微观形貌与制备过程中的酸碱度值有很大的关系。当样品的pH=10时,ZnO粒子线阵列间距为30 nm,ZnO纳米粒子的尺寸约为30 nm。我们推测在制备的过程中,纤维素自组装成排列规则的纳米纤维素,ZnO均匀的覆盖在纤维素的表面,如Fig.1所示。通过抗革兰氏阳性菌-金黄色葡萄球菌和革兰氏阴性菌-大肠杆菌检测了ZnO@cellulose纳米复合材料的抗菌性。实验结果表明ZnO@cellulose复合材料具有优异的抗菌性能,抑菌环的直径为55.8 mm。规则纳米结构复合材料的形貌特点增强了ZnO@cellulose的抗菌性能。因此,绿色、环保、无毒的ZnO@cellulose纳米复合材料可望用作食品包装材料。
The ZnO @cellulose nano-composite with morphologies of line-array architecture has been synthesized by a facile hydrothermal method. The ZnO nano-crystals are formed in situ during the synthetic process and simultaneously grow up along the cellulose. The SEM images demonstrate that the morphology of the composite can be tuned by p H during the preparation. The lines between the Zn O array are about 30 nm(pH=10), and the size of ZnO are about 30 nm, which indicate that the cellulose nanofibers about 30 nm are self-assembly during the hydrothermal synthesis. It is observed that the cellulose is covered with uniform ZnO nanoparticles. Antibacterial activities of the ZnO@cellulose nano-composite have been detected by Escherichia coli and staphylococcus aureus and shows excellent antibacterial activities with diameter of 55.8 mm for the inhibition zone. Morphological feature of nano-architectural composite enhances the antibacterial activities. ZnO@cellulose nano-composite is expected to be used as food packaging materials.
The ZnO @cellulose nano-composite with morphologies of line-array architecture has been synthesized by a facile hydrothermal method. The ZnO nano-crystals are formed in situ during the synthetic process and simultaneously grow up along the cellulose. The SEM images demonstrate that the morphology of the composite can be tuned by p H during the preparation. The lines between the Zn O array are about 30 nm(pH=10), and the size of ZnO are about 30 nm, which indicate that the cellulose nanofibers about 30 nm are self-assembly during the hydrothermal synthesis. It is observed that the cellulose is covered with uniform ZnO nanoparticles. Antibacterial activities of the ZnO@cellulose nano-composite have been detected by Escherichia coli and staphylococcus aureus and shows excellent antibacterial activities with diameter of 55.8 mm for the inhibition zone. Morphological feature of nano-architectural composite enhances the antibacterial activities. ZnO@cellulose nano-composite is expected to be used as food packaging materials.
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