基于 MXene（TiC）的农药缓释递送系统及其增强的害虫防治效果。
MXene (TiC) Based Pesticide Delivery System for Sustained Release and Enhanced Pest Control.
机构信息
National & Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China.
CAS Key Laboratory of Nano-Bio Interface, CAS Center for Excellence in Nanoscience, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China.
出版信息
ACS Appl Bio Mater. 2021 Sep 20;4(9):6912-6923. doi: 10.1021/acsabm.1c00607. Epub 2021 Aug 13.
A multifunctional nanomaterials based pesticide delivery system provides a powerful strategy for the efficient utilization of pesticides. We present here the application of a 2D MXene (TiC) nanomaterial for pesticide delivery and plant protection. Avermectin (AV), a hydrophobic and unstable insecticide, was chosen as the model pesticide. In our study, AV@TiC was formed by fast adsorption of AV on TiC, with a maximum loading capacity of 81.44%. Compared with hydrophobic AV, AV@TiC exhibited significantly improved water solubility, which is beneficial for ensuring the bioactivity of pesticide. The AV@TiC nanoformulation showed pH responsive slow-release behavior, overcoming the burst-release of conventional AV formulations. Besides, AV@TiC possessed excellent photostability under UV irradiation, which prolonged the persistent period of AV. Therefore, AV@TiC performed sustaining and enhanced antipest activity, according to the bioactivity assay. Furthermore, AV@TiC showed satisfactory biosafety, with no negative effect to the germination and growth of maize. Our current research provides a potential candidate, AV@TiC, for pest control, and also broadens the application of 2D MXene materials in plant protection and sustainable agriculture.
一种基于多功能纳米材料的农药输送系统为高效利用农药提供了一种强有力的策略。我们在这里展示了二维 MXene（TiC）纳米材料在农药输送和植物保护中的应用。阿维菌素（AV）是一种疏水且不稳定的杀虫剂，被选为模型农药。在我们的研究中，AV@TiC 通过 AV 在 TiC 上的快速吸附形成，最大负载能力为 81.44%。与疏水 AV 相比，AV@TiC 表现出显著提高的水溶性，这有利于确保农药的生物活性。AV@TiC 纳米制剂表现出 pH 响应的缓慢释放行为，克服了常规 AV 制剂的爆发释放。此外，AV@TiC 在紫外光照射下表现出优异的光稳定性，延长了 AV 的持久期。因此，根据生物活性测定，AV@TiC 表现出持续和增强的抗虫活性。此外，AV@TiC 表现出令人满意的生物安全性，对玉米的萌发和生长没有负面影响。我们目前的研究为害虫防治提供了一种潜在的候选物 AV@TiC，同时也拓宽了二维 MXene 材料在植物保护和可持续农业中的应用。
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