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史松昌, 王琦, 张志康, 崔传金, 张小乐, 王巍杰. 免模板法合成高纯介孔氧化镁纳米抗菌剂[J]. 环境化学, 2020, (3): 800-808. doi: 10.7524/j.issn.0254-6108.2019103101
引用本文: 史松昌, 王琦, 张志康, 崔传金, 张小乐, 王巍杰. 免模板法合成高纯介孔氧化镁纳米抗菌剂[J]. 环境化学, 2020, (3): 800-808. doi: 10.7524/j.issn.0254-6108.2019103101
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SHI Songchang, WANG Qi, ZHANG Zhikang, CUI Chuanjin, ZHANG Xiaole, WANG Weijie. Template-free synthesis of high-purity mesoporous MgO nanoparticles as antimicrobial[J]. Environmental Chemistry, 2020, (3): 800-808. doi: 10.7524/j.issn.0254-6108.2019103101
Citation: SHI Songchang, WANG Qi, ZHANG Zhikang, CUI Chuanjin, ZHANG Xiaole, WANG Weijie. Template-free synthesis of high-purity mesoporous MgO nanoparticles as antimicrobial[J]. Environmental Chemistry, 2020, (3): 800-808. doi: 10.7524/j.issn.0254-6108.2019103101
shu

免模板法合成高纯介孔氧化镁纳米抗菌剂

  • 1. 华北理工大学生命科学学院, 唐山, 063210;

  • 2. 华北理工大学电气工程学院, 唐山, 063210

    • 通讯作者: 张小乐, E-mail: smilxin@126.com ; 
  • 基金项目:

    国家自然科学基金（21377034），河北省科学技术研究与发展计划项目（11215183）和河北省食品药品监督管理局科技计划项目（QN2015012）资助.

Template-free synthesis of high-purity mesoporous MgO nanoparticles as antimicrobial

  • 1. College of Life Science, North China University of Science and Technology, Tangshan, 063210, China;

  • 2. College of Electrical Engineering, North China University of Science and Technology, Tangshan, 063210, China

    • Corresponding author: ZHANG Xiaole, smilxin@126.com ; 
  • Fund Project: Supported by the National Natural Science Foundation of China (21377034),Science and Technology Research and Development Program of Hebei Province, China (11215183) and Research Project of Hebei Provincial Administration of Traditional Chinese Medicine, China (QN2015012).

  • 摘要: 通过尿素和四水合乙酸镁的水热沉淀反应合成了多孔碳酸镁纳米带，再经高温煅烧制备了高纯度介孔氧化镁纳米颗粒.对所得材料进行了结构性质的表征，并利用最小抑菌浓度试验、抑菌圈试验、和摇瓶灭活试验考察了该材料对常见致病菌的抗菌活性.结果表明，该材料平均粒径为50 nm，含有许多直径约为3 nm的介孔，比表面积可达193.7 m2·g-1，并赋予材料大量的缺陷位点和较高的抗菌活性，500 mg·L-1的材料在24 h内对大肠杆菌和金黄色葡萄球菌可达到99.9%的杀菌百分率.此外，X射线晶体衍射、元素组成分析和X射线光电子能谱分析证实，以尿素和乙酸镁为前体，可以获得高纯度纳米氧化镁材料.
    Abstract: Porous magnesium carbonate nanobelt was synthesized through hydrothermal precipitation of carbamide and magnesium acetate tetrahydrate and was calcinated at 600℃,the high-purity mesoporous magnesium oxide nanoparticles (MgO NPs) was prepared without other template. The prepared materials were characterized and the antibacterial activity was evaluated with minimal inhibitory concentration test, paper disk diffusion assay, and shaking flask inactivation experiments. The results showed that the obtained MgO NPs, with a mean diameter of 50 nm and many mesopores of about 3 nm, had large surface area (193.7 m2·g-1) and many defect sites which contributed to the enhanced antibacterial activity of the material. A bactericidal ratio of higher than 99.9% could be achieved for both Escherichia coli and Staphylococcus aureus by treatment with 500 mg·L-1 of the prepared MgO NPs for 24 h. Furthermore, high purity of the product could be obtained by using magnesium acetate and carbamide as precursors, which was confirmed by X-ray diffraction, element composition analysis, and X-ray photo-electron spectrum analysis.
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  • 收稿日期:  2019-10-31

免模板法合成高纯介孔氧化镁纳米抗菌剂

    通讯作者: 张小乐, E-mail: smilxin@126.com ; 
  • 1. 华北理工大学生命科学学院, 唐山, 063210;
  • 2. 华北理工大学电气工程学院, 唐山, 063210
  • 收稿日期:  2019-10-31
基金项目:

国家自然科学基金（21377034），河北省科学技术研究与发展计划项目（11215183）和河北省食品药品监督管理局科技计划项目（QN2015012）资助.

摘要: 通过尿素和四水合乙酸镁的水热沉淀反应合成了多孔碳酸镁纳米带，再经高温煅烧制备了高纯度介孔氧化镁纳米颗粒.对所得材料进行了结构性质的表征，并利用最小抑菌浓度试验、抑菌圈试验、和摇瓶灭活试验考察了该材料对常见致病菌的抗菌活性.结果表明，该材料平均粒径为50 nm，含有许多直径约为3 nm的介孔，比表面积可达193.7 m2·g-1，并赋予材料大量的缺陷位点和较高的抗菌活性，500 mg·L-1的材料在24 h内对大肠杆菌和金黄色葡萄球菌可达到99.9%的杀菌百分率.此外，X射线晶体衍射、元素组成分析和X射线光电子能谱分析证实，以尿素和乙酸镁为前体，可以获得高纯度纳米氧化镁材料.

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