A ZnO and calcium phosphate co-deposited coating on magnesium alloy for better antibacterial property, cytocompatibility and corrosion resistance

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-26 DOI:10.1016/j.colsurfa.2024.135834

Xia Li , Jiayin Zhao , Di Mei , Jingan Li , Shuijing Yu , Fei Liang , Xinyuan Wang , Liguo Wang , Shijie Zhu , Shaokang Guan

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引用次数: 0

Abstract

The widespread applications of magnesium alloys in the biomedical field are hindered by their susceptibility to corrosion in physiological environments. This study aims to improve the antibacterial, bone growth promoting and corrosion resistance properties of magnesium alloys by depositing a ZnO nanoparticles and calcium phosphate (CaP) co-deposited coating (CaP@ZnO) on their surfaces via a step-by-step electrochemical approach. The coating was characterized for surface morphology, chemical composition, corrosion resistance, biocompatibility, and antibacterial properties. The results showed that the CaP@ZnO coating exhibited significant antibacterial performance, effectively inhibiting the growth of Staphylococcus aureus and Escherichia coli. Furthermore, the CaP@ZnO coating promoted the proliferation of osteoblasts, thereby facilitating new bone formation and regeneration. The coating also demonstrated excellent corrosion resistance, significantly delaying the corrosion rate of the magnesium alloy in pseudo-physiological environments. The proposed composite coating in this study is beneficial for promoting the practical application of magnesium alloys in the orthopedic field.

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在镁合金上共沉积氧化锌和磷酸钙涂层，以获得更好的抗菌性能、细胞相容性和耐腐蚀性能

镁合金在生物医学领域的广泛应用因其在生理环境中易受腐蚀而受到阻碍。本研究旨在通过逐步电化学方法在镁合金表面沉积氧化锌纳米粒子和磷酸钙（CaP）共沉积涂层（CaP@ZnO），从而改善镁合金的抗菌、促进骨骼生长和耐腐蚀性能。对涂层的表面形貌、化学成分、耐腐蚀性、生物相容性和抗菌性能进行了表征。结果表明，CaP@ZnO 涂层具有显著的抗菌性能，能有效抑制金黄色葡萄球菌和大肠杆菌的生长。此外，CaP@ZnO 涂层还能促进成骨细胞的增殖，从而促进新骨的形成和再生。该涂层还表现出优异的耐腐蚀性，在假生理环境中大大延缓了镁合金的腐蚀速度。本研究提出的复合涂层有利于促进镁合金在骨科领域的实际应用。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.