In recent days, the usage of biological and non-biological pollutants increased which poses a significant threat to environmental and biological systems. Therefore, the present aim is to develop effective methods to treat such pollutants by using highly stable and small-sized Schiff base ligand capped silver nanoparticles (AgNPs) with a face-centered cubic (fcc) crystalline structure and the size range is 5–10 nm. The potent role of the resulting synthesized AgNPs was found to be on multiple platforms such as catalyst, sensor, antioxidant, and antimicrobial disinfectant. The synthesized AgNPs were characterized through UV–vis spectroscopy, PL, FTIR, XRD, SEM, and TEM. The FTIR spectrum of AgNPs exhibited the interacted functional groups of Schiff base and size was estimated by XRD and TEM. AgNPs were able to catalytically degrade approximately 95% of methylene blue (MB), rhodamine B (RhB), and eosin Y (EY) dyes within 80 min of reaction time using NaBH₄. The fluorometric sensor studies of synthesized AgNPs showed selective sensing of the potentially hazardous Fe²⁺ ion in water. As an antimicrobial agent, the AgNPs are effective against both Gram-positive and Gram-negative bacteria; as well as fungi, with the zones of clearance as approximately compatible with standard drugs. The AgNPs displayed a greater ability to scavenge free radicals, especially DPPH when compared with AgNPs and ascorbic acid. Thus, the results of this study validate the triple role of AgNPs derived via a simple synthesis as a catalyst, sensor, antioxidant, and antimicrobial agent for effective environmental remediation.

最近几天，生物和非生物污染物的使用增加，这对环境和生物系统构成了重大威胁。因此，目前的目标是通过使用具有面心立方 (fcc) 晶体结构且尺寸范围为 5-10纳米。发现合成的 AgNPs 的强大作用存在于多个平台上，例如催化剂、传感器、抗氧化剂和抗菌消毒剂。通过紫外-可见光谱、PL、FTIR、XRD、SEM 和 TEM 对合成的 AgNPs 进行了表征。AgNPs 的 FTIR 光谱显示了席夫碱的相互作用官能团，并通过 XRD 和 TEM 估计了尺寸。₄ . 合成 AgNPs 的荧光传感器研究显示了对水中潜在危险的 Fe ²⁺离子的选择性传感。作为一种抗菌剂，AgNPs 对革兰氏阳性菌和革兰氏阴性菌均有效；以及真菌，清除区域与标准药物大致兼容。与 AgNPs 和抗坏血酸相比，AgNPs 显示出更强的清除自由基的能力，尤其是 DPPH。因此，本研究的结果验证了通过简单合成衍生的 AgNPs 作为催化剂、传感器、抗氧化剂和抗菌剂的三重作用，可用于有效的环境修复。