Antimicrobial materials based on metal cations loaded on solids have been widely investigated against different bacteria. In this study, sodium bentonite was silylated in the presence of different organosilanes containing one, two or three nitrogen atoms. Reactions were performed, free of solvent, under microwave irradiation at 50 °C and 5 min. Raw and silylated solids were loaded with Zn(II) cations, and their antibacterial activities against and were evaluated. The obtained silylated samples were characterized using X-ray diffraction, Fourier transform infrared spectroscopy (FT-IR), C and Si nuclear magnetic resonance (NMR), zeta potential measurements, CHN elemental analysis, scanning electron microscopy (SEM), transmission electron microscopy, and thermogravimetric analysis. Silanes were successfully covalently bonded to the silanols of the clay mineral and intercalated, resulting in an increase in the basal space. Antibacterial testing of the Zn loaded solids revealed a maximum inhibition of up to 88 % and 62 % of both the bacteria and .

中文翻译：

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负载 Zn(II) 的硅烷化膨润土作为抗菌材料：表面功能化的影响

基于负载在固体上的金属阳离子的抗菌材料已针对不同的细菌进行了广泛的研究。在这项研究中，钠膨润土在含有一个、两个或三个氮原子的不同有机硅烷存在下进行甲硅烷基化。反应在无溶剂、50°C 微波照射下进行 5 分钟。原始固体和甲硅烷基化固体负载有 Zn(II) 阳离子，并评估了它们的抗菌活性。使用 X 射线衍射、傅里叶变换红外光谱 (FT-IR)、C 和 Si 核磁共振 (NMR)、zeta 电位测量、CHN 元素分析、扫描电子显微镜 (SEM)、透射电子显微镜对所得硅烷化样品进行了表征和热重分析。硅烷成功地与粘土矿物的硅烷醇共价键合并插入，导致基底空间增加。载锌固体的抗菌测试显示，对细菌和 细菌的最大抑制率分别高达 88% 和 62%。