In this work, an electrical-driven release and migration glyphosate (EDRMG) was fabricated using a nanocomposite made up of attapulgite (ATP), glyphosate (Gly), and calcium alginate (CA). Therein, ATP-CA acted as a nanonetwork-structured carrier to efficiently load plenty of Gly to form porous ATP-Gly-CA hydrogel spheres (actually EDRMG-0.5) via a cross-linking reaction. The pores in EDRMG-0.5 hydrogel spheres were enlarged under an electric field because of the Coulomb force of the anionic CA polymer, and the release of negatively charged Gly from the spheres could be driven by the electric field force. Thus, EDRMG-0.5 exhibited a great electroresponsively controlled-release property, which was confirmed by a pot experiment. Importantly, the EDRMG-0.5 hydrogel spheres had fine biocompatibility on fish and mice, displaying good biosafety. This work provides a low cost and promising approach to control Gly release, deliver Gly precisely, and improve utilization efficiency, which might have a high application value.

中文翻译：

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使用基于凝胶的纳米复合材料的除草剂的电驱动释放和迁移。

在这项工作中，使用由凹凸棒石（ATP），草甘膦（Gly）和海藻酸钙（CA）组成的纳米复合材料制造了电驱动的释放和迁移草甘膦（EDRMG）。其中，ATP-CA充当纳米网络结构的载体，可有效地负载大量Gly，从而通过交联反应形成多孔的ATP-Gly-CA水凝胶球（实际上是EDRMG-0.5）。由于阴离子CA聚合物的库仑力，EDRMG-0.5水凝胶球体中的孔在电场作用下增大，并且电场力可驱动带负电荷的Gly从球体中释放。因此，EDRMG-0.5显示出良好的电响应控释性质，这通过盆栽实验得到证实。重要的是，EDRMG-0.5水凝胶球对鱼类和小鼠具有良好的生物相容性，显示出良好的生物安全性。