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Design of highly leaf-adhesive and anti-UV herbicide nanoformulation for enhanced herbicidal activity
Journal of Advanced Research ( IF 11.4 ) Pub Date : 2024-12-22 , DOI: 10.1016/j.jare.2024.12.034 Dongdong Li, Jianan Li, Hao Li, Zhendong Bai, Chujian Ma, Haodong Bai, Dingfeng Luo, Zuren Li, Lianyang Bai
中文翻译:
设计高粘附性和抗紫外线除草剂纳米制剂以增强除草活性
传统的农药配方已被广泛用于提高农业生产力,但其较弱的叶面粘附力和喷洒过程中在紫外线下的不稳定性导致利用率低,并可能对环境和健康造成危害。为了应对这些挑战,纳米制剂的开发是一项关键战略。这些先进的配方旨在提高活性成分 (AI) 的功效并减少对生态的影响,从而满足可持续农业发展的需求。
该研究旨在制备一种高度粘附和抗紫外线的除草剂纳米制剂,旨在提高 AI 的除草活性和利用率。
在此,通过将 cyhalofop-butyl 掺入单宁酸-Fe (III) 离子涂层的功能化介孔二氧化硅中,合成了除草剂纳米制剂(称为 CB@MSNs-TA-Fe)。结合 SEM 观察和 HPLC 分析评估样品的叶面保留性能。
具有粗糙外表面的 CB@MSNs-TA-Fe 显示出典型的核壳结构,平均直径约为 118 nm。氨基修饰后,CB@MSNs-TA-Fe 对 CB 的负载速率增强 (14.4 ± 0.2%) 和优异的热稳定性。酸性条件下 CB@MSNs-TA-Fe 中 CB 的释放速率高于碱性和中性条件下的释放速率。在紫外线照射下,CB@MSNs-TA-Fe 纳米颗粒中 CB 的半衰期是 CB 技术 (CB TC) 的 12.4 倍。观察到 CB@MSNs-TA-Fe 在疏水叶片表面的叶面粘附增强,这可以有效降低降雨冲刷的风险。与 CB TC 和 CB 油分散体相比,CB@MSNs-TA-Fe 在紫外线照射或模拟雨水冲刷下对稗草表现出增强的除草效果。此外,TA-Fe 包被的 MSN-NH2 纳米载体 (MSN-TA-Fe) 对水稻、斑马鱼和蚯蚓表现出优异的生物安全性。
开发的 TA-Fe 功能化除草剂纳米制剂具有高叶面粘附性和抗紫外线性能,有效提高了 AI 的利用效率,从而为高效农药制剂的开发提供了创新解决方案。
更新日期:2024-12-23
Journal of Advanced Research ( IF 11.4 ) Pub Date : 2024-12-22 , DOI: 10.1016/j.jare.2024.12.034 Dongdong Li, Jianan Li, Hao Li, Zhendong Bai, Chujian Ma, Haodong Bai, Dingfeng Luo, Zuren Li, Lianyang Bai
Introduction
Conventional pesticide formulations have been widely used to boost agricultural productivity, but their weak foliar adhesion and instability under UV light during spraying lead to low utilization rates and potential environmental and health hazards. To counter these challenges, the development of nanoformulations represents a pivotal strategy. These advanced formulations are designed to enhance the efficacy of active ingredients (AIs) and reduce ecological impacts, thereby addressing the need for sustainable agricultural development.Objectives
The study aims to fabricate a highly leaf-adhesive and anti-UV herbicide nanoformulation, designed to enhance the herbicidal activity and utilization rates of AIs.Methods
Herein, the herbicide nanoformulations (Called CB@MSNs-TA-Fe) are synthesized by incorporating cyhalofop-butyl into tannic acid-Fe (III) ions-coated functionalized mesoporous silica. The foliar retention performance of the samples was assessed integrating SEM observation and HPLC analysis.Results
The CB@MSNs-TA-Fe with rough outer surface displays typical core–shell structure featuring an average diameter of about 118 nm. After amino modification, the CB@MSNs-TA-Fe shows enhanced loading rate for CB (14.4 ± 0.2 %) and superior thermal stability. The release rate of CB within CB@MSNs-TA-Fe under acidic conditions is higher compared to that under alkaline and neutral conditions. Upon UV irradiation, the half-life of CB within CB@MSNs-TA-Fe nanoparticles is 12.4 times higher than that of CB technical (CB TC). Enhanced foliar adhesion of CB@MSNs-TA-Fe on hydrophobic leaf surfaces is observed, which can effectively mitigate the risk of wash-off by rainfall. The CB@MSNs-TA-Fe displays enhanced herbicidal efficacies against barnyard grass under UV irradiation or simulated rainwater scouring, compared with CB TC and CB oil dispersion. Furthermore, the TA-Fe-coated MSNs-NH2 nano-carrier (MSNs-TA-Fe) reveals excellent biosafety on rice, zebrafish, and earthworms.Conclusion
The developed TA-Fe-functionalized herbicide nanoformulations, with high foliar adhesion and anti-UV properties, effectively improve the utilization efficiency of AIs, thus offering innovative solutions for the development of efficient pesticide formulations.中文翻译:
设计高粘附性和抗紫外线除草剂纳米制剂以增强除草活性
介绍
传统的农药配方已被广泛用于提高农业生产力,但其较弱的叶面粘附力和喷洒过程中在紫外线下的不稳定性导致利用率低,并可能对环境和健康造成危害。为了应对这些挑战,纳米制剂的开发是一项关键战略。这些先进的配方旨在提高活性成分 (AI) 的功效并减少对生态的影响,从而满足可持续农业发展的需求。
目标
该研究旨在制备一种高度粘附和抗紫外线的除草剂纳米制剂,旨在提高 AI 的除草活性和利用率。
方法
在此,通过将 cyhalofop-butyl 掺入单宁酸-Fe (III) 离子涂层的功能化介孔二氧化硅中,合成了除草剂纳米制剂(称为 CB@MSNs-TA-Fe)。结合 SEM 观察和 HPLC 分析评估样品的叶面保留性能。
结果
具有粗糙外表面的 CB@MSNs-TA-Fe 显示出典型的核壳结构,平均直径约为 118 nm。氨基修饰后,CB@MSNs-TA-Fe 对 CB 的负载速率增强 (14.4 ± 0.2%) 和优异的热稳定性。酸性条件下 CB@MSNs-TA-Fe 中 CB 的释放速率高于碱性和中性条件下的释放速率。在紫外线照射下,CB@MSNs-TA-Fe 纳米颗粒中 CB 的半衰期是 CB 技术 (CB TC) 的 12.4 倍。观察到 CB@MSNs-TA-Fe 在疏水叶片表面的叶面粘附增强,这可以有效降低降雨冲刷的风险。与 CB TC 和 CB 油分散体相比,CB@MSNs-TA-Fe 在紫外线照射或模拟雨水冲刷下对稗草表现出增强的除草效果。此外,TA-Fe 包被的 MSN-NH2 纳米载体 (MSN-TA-Fe) 对水稻、斑马鱼和蚯蚓表现出优异的生物安全性。
结论
开发的 TA-Fe 功能化除草剂纳米制剂具有高叶面粘附性和抗紫外线性能,有效提高了 AI 的利用效率,从而为高效农药制剂的开发提供了创新解决方案。