The development of an eco-friendly and reliable process for the production of nanomaterials is essential to overcome the toxicity and exorbitant cost of conventional methods. As such, a facile and green synthesis method is introduced for the preparation of lignin mediated silver nanoparticles (L-Ag NPs). This is produced by reducing Ag precursors using lignin biopolymers which are formulated by pulsed laser irradiation and an ultrasonication process. Lignin operates as both a reducing and stabilizing agent. The various analytical techniques of ultraviolet-visible spectroscopy, transmission electron microscope and X-ray diffractometer studies were employed to verify the formation of non-aggregated spherical L-Ag NPs with an average size as small as 7-8 nm. The selective sensing capability of the synthesized L-Ag NPs was examined for the detection of hydrogen peroxide and mercury ions in an aqueous environment. Furthermore, the superior catalytic performance of L-Ag NPs was demonstrated by the rapid conversion of toxic 4-nitrophenol and nitrobenzene as targeted pollutants to the corresponding amino compounds. A plausible catalytic reduction mechanism for the removal of toxic nitro-organic pollutants over L-Ag NPs is proposed. This research coincides with existing studies and affirms that L-Ag NPs are an effective sensor that be applied as a catalytic material within environmental remediation and also alternative biomedical applications.

为了克服常规方法的毒性和高昂的成本，开发一种环保，可靠的纳米材料生产工艺至关重要。因此，引入了一种简便且绿色的合成方法来制备木质素介导的银纳米颗粒（L-Ag NPs）。这是通过使用木质素生物聚合物还原Ag前体而产生的，木质素生物聚合物是通过脉冲激光辐照和超声处理工艺配制的。木质素既充当还原剂又充当稳定剂。紫外-可见光谱，透射电子显微镜和X射线衍射仪研究的各种分析技术被用于验证平均大小小至7-8 nm的非聚集球形L-Ag NP的形成。为了检测水性环境中的过氧化氢和汞离子，对合成的L-Ag NP的选择性感测能力进行了检查。此外，通过将有毒的4-硝基苯酚和硝基苯作为目标污染物快速转化为相应的氨基化合物，可以证明L-Ag NP具有优异的催化性能。提出了一种可行的催化还原机理，用于去除L-Ag NPs上的有毒硝基有机污染物。这项研究与现有研究相吻合，并确认L-Ag NP是一种有效的传感器，可在环境修复和替代性生物医学应用中用作催化材料。L-Ag NPs的优异催化性能通过将有毒的4-硝基苯酚和硝基苯作为目标污染物快速转化为相应的氨基化合物得到证明。提出了一种可行的催化还原机理，用于去除L-Ag NPs上的有毒硝基有机污染物。这项研究与现有研究相吻合，并确认L-Ag NP是一种有效的传感器，可在环境修复和替代性生物医学应用中用作催化材料。L-Ag NPs的优异催化性能通过将有毒的4-硝基苯酚和硝基苯作为目标污染物快速转化为相应的氨基化合物得到证明。提出了一种可行的催化还原机理，用于去除L-Ag NPs上的有毒硝基有机污染物。这项研究与现有研究相吻合，并确认L-Ag NP是一种有效的传感器，可在环境修复和替代性生物医学应用中用作催化材料。