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首页> 外文期刊>ACS applied materials & interfaces >Biomimetic Method To Assemble Nanostructured Ag@ZnO on Cotton Fabrics: Application as Self-Cleaning Flexible Materials with Visible-Light Photocatalysis and Antibacterial Activities
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Biomimetic Method To Assemble Nanostructured Ag@ZnO on Cotton Fabrics: Application as Self-Cleaning Flexible Materials with Visible-Light Photocatalysis and Antibacterial Activities

机译：仿生方法在棉织物上组装纳米结构Ag @ ZnO的应用：具有可见光光催化和抗菌活性的自洁柔性材料

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摘要

A bioinspired mineralization route to prepare self-cleaning cotton fabrics by functionalizing their surface with nanostructured Ag@ZnO is demonstrated herein. In a polyamine-mediated mineralization process, while the nucleation, organization and coating of ZnO is done directly from water-soluble zinc salts under mild conditions, the entrapped polyamine in the ZnO matrix acts as reducing agent to generate Ag(0) from Ag(I) at room temperature. The Ag@ZnO coated cotton fabrics are characterized by FESEM, HRTEM, XRD, and UVvisDRS to confirm the formation and coating of Ag@ZnO particles on individual threads of the fabric. The presence of Ag nanoparticles not only enables the ZnO-coated fabrics exhibiting improved photocatalytic property but also allows for visible-light-driven activities. Furthermore, it exhibits efficient antimicrobial activity against both Gram-positive and Gram-negative bacteria. Therefore, besides these multifunctional properties, the polyamine-mediated bioinspired approach is expected to pave way for functionalization of flexible substrates under mild conditions as desirable for the development and fabrication of smart, lightweight, and wearable devices for various niche applications.
机译：本文展示了一种通过生物启发的矿化途径，通过用纳米结构的Ag @ ZnO功能化其表面来制备自清洁棉织物。在多胺介导的矿化过程中，虽然在温和条件下直接从水溶性锌盐中完成ZnO的成核，组织和涂覆，但ZnO基质中截留的多胺却起还原剂的作用，从Ag（ I）在室温下。用FESEM，HRTEM，XRD和UVvisDRS对涂有Ag @ ZnO的棉织物进行表征，以确认在织物的各个线上Ag @ ZnO颗粒的形成和涂层。 Ag纳米颗粒的存在不仅使涂覆有ZnO的织物表现出改善的光催化性能，而且允许可见光驱动的活性。此外，它对革兰氏阳性和革兰氏阴性细菌均表现出有效的抗菌活性。因此，除了这些多功能特性，多胺介导的生物启发方法有望为温和条件下的柔性基材功能化铺平道路，这对于开发和制造用于各种利基应用的智能，轻便和可穿戴设备是理想的。

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