The emergence of multidrug-resistant microbes and newly outbreaking diseases are one of the major threats before mankind. This paves the way for researchers to explore new antimicrobial agents that possess common day-to-day applications. In this concern, we have fabricated the antimicrobial Ag-kaolin functional nanostructures by simple and sustainable protocol employing Murraya koenigii fruit extract. UV-visible spectra (UV-Vis) of the Ag-kaolin exhibit absorption peak at 430 nm which corresponds to the characteristic surface plasmon resonance of Ag nanoparticles. X-ray diffraction pattern (XRD) shows the diffraction peak at 37.6° confirms their face-centred cubic nature with (111) plane. Furthermore, the formation of Ag-kaolin functional nanostructures was confirmed through a scanning electron microscope (SEM) and energy-dispersive X-ray spectrum (EDX) analysis. The transmission electron microscopic (TEM) studies reveal the effective formation of quasi-spherical monodispersed Ag nanoparticles having 20–30-nm diameters on the kaolin clay. The bio-synthesized Ag-kaolin nanostructures showed excellent antimicrobial activity against pathogenic gram-positive (Staphylococcus aureus, Bacillus subtilis) and gram-negative (Escherichia coli) bacteria respectively with the inhibition zones of 26 mm, 25 mm and 30 mm.

耐多药微生物的出现和新近爆发的疾病是人类面临的主要威胁之一。这为研究人员探索具有常见日常应用的新型抗菌剂铺平了道路。考虑到这一点，我们通过使用Murraya koenigii的简单且可持续的方案制备了抗菌型Ag-高岭土功能纳米结构水果提取物。Ag-高岭土的UV-可见光谱（UV-Vis）在430nm处显示吸收峰，其对应于Ag纳米颗粒的特征性表面等离子体共振。X射线衍射图谱（XRD）显示37.6°处的衍射峰证实了它们的面心立方性质为（111）平面。此外，通过扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）分析证实了Ag-高岭土功能纳米结构的形成。透射电子显微镜（TEM）研究表明，高岭土上有效形成了直径为20–30 nm的准球形单分散Ag纳米颗粒。生物合成的银高岭土纳米结构对病原性革兰氏阳性菌（金黄色葡萄球菌，枯草芽孢杆菌（Bacillus subtilis）和革兰氏阴性（Escherichia coli）细菌分别具有26 mm，25 mm和30 mm的抑制区。