银/高岭土纳米复合材料的合成、表征及抗菌活性研究。
Synthesis, characterization of silver/kaolinite nanocomposite and studying its antibacterial activity.
机构信息
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; Center of Physical-Chemical Methods of Research and Analysis, Almaty 050012, Kazakhstan.
Department of Public Health Protection and Animal Welfare, Faculty of Biological and Veterinary Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Toruń, Poland; Interdisciplinary Center for Modern Technologies, Nicolaus Copernicus University in Torun, Wilenska 4, 87-100 Torun, Poland.
出版信息
Colloids Surf B Biointerfaces. 2022 Dec;220:112908. doi: 10.1016/j.colsurfb.2022.112908. Epub 2022 Oct 11.
In the present study, silver/kaolinite nanocomposites were synthesized by impregnation in a silver nitrate solution. Silver nanoparticles are deposited onto the surface of the kaolinite by a simple wet reduction of a silver precursor using hydrogen peroxide as a reducing agent. Elemental, mineral composition, structure and morphology of natural kaolinite and synthesized nanocomposites are characterized by X-ray diffractometry, FT-IR spectroscopy, photoluminescence (PL), zeta potential, scanning electron microscopy, transmission electron microscopy and thermogravimetric analysis. The antibacterial activity of AgNPs/kaolinite nanocomposites to Gram-positive Staphylococcus aureus and Gram-negative Klebsiella pneumoniae, Escherichia coli strains was studied by the minimum inhibitory concentration method. The obtained AgNPs/kaolinite nanocomposite was shown to have antimicrobial potential.
在本研究中，通过浸渍在硝酸银溶液中合成了银/高岭石纳米复合材料。通过使用过氧化氢作为还原剂的简单湿还原，将银纳米颗粒沉积在高岭石的表面上。使用 X 射线衍射仪、傅里叶变换红外光谱、光致发光（PL）、zeta 电位、扫描电子显微镜、透射电子显微镜和热重分析对天然高岭石和合成纳米复合材料的元素、矿物组成、结构和形态进行了表征。通过最小抑菌浓度法研究了 AgNPs/kaolinite 纳米复合材料对革兰氏阳性金黄色葡萄球菌和革兰氏阴性肺炎克雷伯菌、大肠杆菌菌株的抗菌活性。结果表明，所得到的 AgNPs/kaolinite 纳米复合材料具有抗菌潜力。
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