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物理性纳米颗粒通过利用太阳光的新型代谢途径有效催化农药降解

Deva-Andrews Arulsoosairaj¹, Chanthini Kanagaraj Muthu-Pandian¹, Senthil-Nathan Sengottayan¹

¹Division of Biopesticides and Environmental Toxicology, Sri Paramakalyani Centre for Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tirunelveli, Tamil Nadu, 627 412, India.

|December 4, 2024

概括

从Ulva lactuca海藻合成的生物银纳米粒子有效降解杀虫剂Cypermethrin,为污染环境中的农药补救提供了可持续的解决方案.

科学领域:

环境科学环境科学
绿色化学绿色化学
纳米技术纳米技术

背景情况:

甲 (Cy) 是一种普遍存在的杀虫剂,造成了广泛的环境污染.
有效的补救策略对于减轻农药残留物对生态的影响至关重要.
海藻衍生的生物纳米颗粒为环境污染物降解提供了一种新的方法.

研究的目的:

为了合成来自Ulva lactuca的生物性银纳米粒子 (UL-AgNPs),用于降解Cypermethrin.
描述合成的UL-AgNPs,并评估它们的催化效率.
阐明降解途径并评估UL-AgNPs的可重复使用性.

主要方法:

来自Ulva lactuca海藻的UL-AgNP的合成.
使用UV-Vis,SEM-EDX,FTIR,XRD,DLS和泽塔潜力分析对UL-AgNP的表征.
使用响应表面方法 (RSM) 优化赛伯甲林降解.

主要成果:

鉴定证实了UL-AgNPs的存在,大小 (81.29nm),结构和稳定性.
在pH7下,在使用16.6 mgL-1UL-AgNPs12小时后,达到91.2%的最佳降解,遵循伪第一阶动力学.
通过GC-MS和UV-Vis光谱,确定了降解产物,包括四度甘,十二度甘和四可酸.

结论:

来自Ulva lactuca的银纳米粒子 (UL-AgNPs) 是Cypermethrin降解的有效催化剂.
这项研究揭示了一种新的降解途径,涉及分离和环分解.
UL-AgNPs证明了可重复使用性,突出了它们在可持续环境修复方面的潜力.

关键词:

纳米技术纳米技术光催化降解的分解预防性整治预防性整治可重复使用性可重复使用性热稳定性热稳定性

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