文献类型： 外文期刊

作者： Shan, Yongpan ¹ ; Xu, Chunli ¹ ; Zhang, Hongjun ² ; Chen, Huiping ¹ ; Bilal, Muhammad ¹ ; Niu, Shujun ³ ; Cao, Lidong ¹ ; Huang, Qiliang ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

2.Minist Agr & Rural Affairs, Inst Control Agrochem, Beijing 100125, Peoples R China

3.Gansu Acad Agr Sci, Inst Plant Protect, 1 Nongkeyuan New Village, Lanzhou 730070, Peoples R China

关键词： metal– organic framework; polydopamine; pesticide; pH-sensitive release; fungicidal activity

期刊名称：NANOMATERIALS （ 影响因子：5.076； 五年影响因子：5.346 ）

ISSN：

年卷期： 2020 年 10 卷 10 期

页码：

收录情况： SCI

摘要： Recently, metal-organic frameworks (MOFs) have become a dazzling star among porous materials used in many fields. Considering their intriguing features, MOFs have great prospects for application in the field of sustainable agriculture, especially as versatile pesticide-delivery vehicles. However, the study of MOF-based platforms for controlled pesticide release has just begun. Controlled pesticide release responsive to environmental stimuli is highly desirable for decreased agrochemical input, improved control efficacy and diminished adverse effects. In this work, simple, octahedral, iron-based MOFs (NH2-Fe-MIL-101) were synthesized through a microwave-assisted solvothermal method using Fe3+ as the node and 2-aminoterephthalic acid as the organic ligand. Diniconazole (Dini), as a model fungicide, was loaded into NH2-Fe-MIL-101 to afford Dini@NH2-Fe-MIL-101 with a satisfactory loading content of 28.1%. The subsequent polydopamine (PDA) modification could endow Dini with pH-sensitive release patterns. The release of Dini from PDA@Dini@NH2-Fe-MIL-101 was much faster in an acidic medium compared to that in neutral and basic media. Moreover, Dini@NH2-Fe-MIL-101 and PDA@Dini@NH2-Fe-MIL-101 displayed good bioactivities against the pathogenic fungus causing wheat head scab (Fusarium graminearum). This research sought to reveal the feasibility of versatile MOFs as a pesticide-delivery platform in sustainable crop protection.