Abstract

Iron nanoparticles (FeNPs) were synthesized via sustainable route of green synthesis to investigate their activity as photocatalyst against environmental pollutants. Nanoparticles were synthesized from leaf extract of Trifolium alexandrinum as a source of stabilizing, capping and reducing agent. Structural and morphological features of these synthesized nanoparticles were characterized by using various techniques including UV-Vis spectroscopy, FTIR, XRD, SEM and DLS analysis. FeNPs were successfully applied as photocatalyst to remove the methylene blue (MB). Mechanism of removal was investigated by fitting the data in pseudo-first-order and pseudo-second-order adsorption and reduction models along with intraparticle diffusion model. FeNPs were found highly active with more than 97% degradation of MB within 35 minutes. Stability of catalyst to be reused was checked out and significant results found up to 3 cycles. Nontoxic, low cost, green synthesized FeNPs were proven efficient as catalyst for the degradation of MB.

摘要

通过可持续的绿色合成途径合成了铁纳米粒子 (FeNPs)，以研究它们作为光催化剂对环境污染物的活性。纳米颗粒是从三叶草的叶提取物中合成的作为稳定剂、封端剂和还原剂的来源。这些合成纳米粒子的结构和形态特征通过使用各种技术进行表征，包括紫外-可见光谱、FTIR、XRD、SEM 和 DLS 分析。FeNPs 成功地用作光催化剂以去除亚甲蓝 (MB)。通过拟合伪一级和伪二级吸附和还原模型以及颗粒内扩散模型中的数据来研究去除机制。发现 FeNPs 具有很高的活性，在 35 分钟内 MB 的降解率超过 97%。检查要重复使用的催化剂的稳定性，发现多达 3 个循环的显着结果。无毒、低成本、绿色合成的 FeNPs 被证明是降解 MB 的有效催化剂。