Iron-based porous metal-organic frameworks with crop nutritional function as carriers for controlled fungicide release

文献类型： 外文期刊

第一作者： Shan, Yongpan

作者： Shan, Yongpan;Cao, Lidong;Muhammad, Bilal;Zhao, Pengyue;Cao, Chong;Huang, Qiliang;Xu, Bo

作者机构：

关键词： Metal-organic framework; Controlled release; Pesticide; Fungicidal activity; Micronutrient

期刊名称：JOURNAL OF COLLOID AND INTERFACE SCIENCE （ 影响因子：8.128； 五年影响因子：7.211 ）

ISSN： 0021-9797

年卷期： 2020 年 566 卷

页码：

收录情况： SCI

摘要： Metal-organic frameworks (MOFs) are an emerging class of hybrid inorganic-organic porous materials used in various fields. Considering their excellent performance, MOFs have a considerable application potential in sustainable agriculture. Research projects of MOFs-based platforms for plant protection and nutrition have just started. Environmental stimuli-responsive pesticide release is highly desirable for improved efficacy and decreased side effects. Iron-based MOFs (Fe-MOFs) have a considerable prospect in agriculture as multifunctional materials both for pesticide delivery and plant nutrient replenishment because iron is an essential micronutrient for crop growth. In this work, a simple octahedral FeMOFs built from trimers of iron octahedra linked by 1, 3, 5-benzenetricarboxylate (Fe-MIL-100) have been prepared as carriers for fungicide azoxystrobin. Due to the high surface area of 2251 m(2)/g, the loading content of azoxystrobin into Fe-MIL-100 is satisfactory up to 16.2%. Azoxystrobin-loaded Fe-MOFs (AZOX@Fe-MIL-100) exhibit a pH-responsive initial burst and a subsequent sustained release pattern. Moreover, AZOX@Fe-MIL-100 exhibits good fungicidal activities against two pathogenic fungi-wheat head scab (Fusarium graminearum) and tomato late blight (Phytophthora infestans). The nutritional function of Fe-MIL-100 as iron micronutrient for the enhanced wheat growth was also observed. This research explores the feasibility of MOFs as a platform for potential application in sustainable plant protection. (C) 2020 Elsevier Inc. All rights reserved.

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