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Microplastic Removal and Degradation by Mussel-Inspired Adhesive Magnetic/Enzymatic Microrobots
Small Methods ( IF 10.7 ) Pub Date : 2021-08-15 , DOI: 10.1002/smtd.202100230 Huaijuan Zhou 1 , Carmen C. Mayorga-Martinez 1 , Martin Pumera 1
Small Methods ( IF 10.7 ) Pub Date : 2021-08-15 , DOI: 10.1002/smtd.202100230 Huaijuan Zhou 1 , Carmen C. Mayorga-Martinez 1 , Martin Pumera 1
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Ubiquitous pollution by microplastics is causing significant deleterious effects on marine life and human health through the food chain and has become a big challenge for the global ecosystem. It is of great urgency to find a cost-efficient and biocompatible material to remove microplastics from the environment. Mimicking basic characteristics of the adhesive chemistry practiced by marine mussels, adhesive polydopamine (PDA)@Fe3O4 magnetic microrobots (MagRobots) are prepared by coating Fe3O4 nanoparticles with a polymeric layer of dopamine via one-step self-polymerization. In addition, lipase is loaded on the PDA@Fe3O4 MagRobots’ surface to perform microplastic enzymatic degradation. The synthesized MagRobots, which are externally triggered by transversal rotating magnetic field, have the capacity to clear away the targeted microplastics due to their strong sticky characteristics. With the adhesive PDA@Fe3O4 MagRobots on their surfaces, the microplastics can be navigated along an arbitrarily predefined path by a rotating field and removed using a directional magnetic field. Such adhesive MagRobots are envisioned to be used in swarms to remove microplastics from aqueous environments.
中文翻译：
贻贝启发的粘性磁性/酶促微型机器人去除和降解微塑料
微塑料无处不在的污染正在通过食物链对海洋生物和人类健康造成严重的有害影响，并已成为全球生态系统的一大挑战。找到一种具有成本效益和生物相容性的材料来去除环境中的微塑料是当务之急。模仿海洋贻贝所使用的粘合剂化学的基本特征，通过一步自聚合用多巴胺聚合物层包覆 Fe 3 O 4纳米颗粒，制备了粘性聚多巴胺 (PDA)@Fe 3 O 4磁性微型机器人 (MagRobots) 。此外，脂肪酶加载到 PDA@Fe 3 O 4MagRobots 的表面进行微塑料酶降解。合成的 MagRobots 由横向旋转磁场外部触发，由于其强大的粘性特性，具有清除目标微塑料的能力。借助其表面的粘合剂 PDA@Fe 3 O 4 MagRobots，微塑料可以通过旋转场沿着任意预定义的路径导航，并使用定向磁场将其移除。这种粘性 MagRobots 被设想用于成群地从水环境中去除微塑料。
更新日期：2021-09-14
中文翻译：
贻贝启发的粘性磁性/酶促微型机器人去除和降解微塑料
微塑料无处不在的污染正在通过食物链对海洋生物和人类健康造成严重的有害影响，并已成为全球生态系统的一大挑战。找到一种具有成本效益和生物相容性的材料来去除环境中的微塑料是当务之急。模仿海洋贻贝所使用的粘合剂化学的基本特征，通过一步自聚合用多巴胺聚合物层包覆 Fe 3 O 4纳米颗粒，制备了粘性聚多巴胺 (PDA)@Fe 3 O 4磁性微型机器人 (MagRobots) 。此外，脂肪酶加载到 PDA@Fe 3 O 4MagRobots 的表面进行微塑料酶降解。合成的 MagRobots 由横向旋转磁场外部触发，由于其强大的粘性特性，具有清除目标微塑料的能力。借助其表面的粘合剂 PDA@Fe 3 O 4 MagRobots，微塑料可以通过旋转场沿着任意预定义的路径导航，并使用定向磁场将其移除。这种粘性 MagRobots 被设想用于成群地从水环境中去除微塑料。
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