Electrostatically assembled Zn2+–GO–LDH hybrid coating on Mg alloy with excellent anticorrosion and antibacterial properties

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2024-06-27 DOI:10.1016/j.matlet.2024.136941

Kui Xue , Dongdong Zhang , Huihui Du , Shi Qian , Wenhao Qian , Xuanyong Liu

引用次数: 0

Abstract

Herein, a graphene oxide (GO)-hybridized Mg–Fe–layered double hydroxide (LDH) coating loaded with zinc ion (Zn²⁺) was grown vertically on Mg alloys via electrostatic assembly. These LDH nanosheets could effectively attract and anchor GO nanosheets, considerably improving the anticorrosion, cell adhesion, and cell proliferation properties of the Mg substrate. Meanwhile, Zn²⁺ was loaded onto the coating via the negatively charged GO surface to enhance their antibacterial activity against Escherichia coli and Staphylococcus aureus. Thus, the designed multilayer coating provides a new platform to address the current shortcomings, including rapid corrosion and insufficient antibacterial activities, using Mg-based alloys as bone implants.

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具有优异防腐和抗菌性能的镁合金静电组装 Zn2+-GO-LDH 混合涂层

本文通过静电组装，在镁合金上垂直生长出负载锌离子（Zn2+）的氧化石墨烯（GO）-杂化镁-铁双层氢氧化物（LDH）涂层。这些 LDH 纳米片能有效地吸引和锚定 GO 纳米片，从而大大提高了镁基底的防腐性、细胞粘附性和细胞增殖性。同时，Zn2+ 通过带负电荷的 GO 表面负载到涂层上，增强了涂层对大肠杆菌和金黄色葡萄球菌的抗菌活性。因此，所设计的多层涂层为解决目前镁基合金作为骨植入物存在的快速腐蚀和抗菌活性不足等缺点提供了一个新的平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive