This study reports the green synthesis of biocompatible TiO₂‐based nanoparticles using Mentha suaveolens extract as a reducing and capping agent. We successfully produced two novel nanocomposites: Fe2O3@TiO₂ and CoO@TiO₂. These nanocomposites possess distinct optical properties, enhanced surface area, and well‐defined morphologies, as revealed by advanced characterization techniques. Notably, Fe2O3@TiO₂ exhibits a red‐shifted absorption, suggesting potential for photocatalysis, sensing, or light‐harvesting applications. Furthermore, the nanocomposites displayed improved antibacterial activity against various bacterial strains compared to the M. suaveolens extract, highlighting their potential as effective and biocompatible antimicrobial agents. Our work pioneers a sustainable and one‐step approach for synthesizing versatile TiO2‐based nanocomposites with tunable functionalities. These findings open doors for developing novel materials with applications ranging from enhanced antimicrobial defenses to light‐driven technologies.

中文翻译：

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薄荷叶提取物介导合成具有协同抗菌和抗氧化活性的 CoO@TiO2 和 Fe2O3@TiO2 核/壳纳米粒子

本研究报告了使用生物相容性 TiO2 基纳米颗粒的绿色合成薄荷提取物作为还原剂和封端剂。我们成功生产了两种新型纳米复合材料：Fe2氧3@TiO2 和 CoO@TiO2。正如先进的表征技术所揭示的那样，这些纳米复合材料具有独特的光学特性、增强的表面积和明确的形态。值得注意的是，铁2氧3@TiO2 表现出红移吸收，表明其具有光催化、传感或光捕获应用的潜力。此外，与传统的纳米复合材料相比，纳米复合材料对各种细菌菌株表现出更好的抗菌活性。苏维奥伦斯提取物，突出了它们作为有效和生物相容性抗菌剂的潜力。我们的工作开创了一种可持续的一步式合成多功能 TiO2 的方法2具有可调节功能的基于纳米复合材料。这些发现为开发新型材料打开了大门，其应用范围从增强抗菌防御到光驱动技术。