Highly dispersed nanocomposite based on magnesium ion modified and silver nanoparticles loaded graphene oxide for enhanced antibacterial activity of silicone coatings

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Diamond and Related Materials Pub Date : 2024-10-25 DOI:10.1016/j.diamond.2024.111702

Xufeng Zhang , Zhanping Zhang , Qi'’an Chen , Jialiang Xing , Yuhong Qi , Zhilian Wu

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Abstract

Silver nanoparticles (Ag NPs) possess excellent antibacterial properties and have received widespread attention. However, the poor dispersion and easy aggregation of Ag NPs can severely diminish their antibacterial efficacy, limiting their practical applications. In this work, we report a simple method for preparing graphene oxide (GO) nanocomposites (Mg-GO/Ag NPs), in which GO is modified by Mg²⁺ and uniformly loaded with Ag NPs. The Ag NPs have an average diameter of approximately 11.14 nm, and uniformly are deposited on the surface of the GO. Compared with GO, the dispersion of Mg-GO/Ag NPs in deionized water (DW) and N, N-dimethylformamide (DMF) is significantly improved. The reaction principle of preparing Mg-GO/Ag NPs was revealed by gas chromatography–mass spectrometry (GC–MS). Additionally, we studied the antibacterial properties of Mg-GO/Ag NPs coatings against marine bacteria and Navicula tenera. This study introduces a novel approach for the preparation of high-efficiency silver-based antifouling coatings, with promising potential for a wide range of marine antifouling applications.

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基于镁离子修饰和银纳米粒子负载氧化石墨烯的高分散纳米复合材料，用于增强有机硅涂层的抗菌活性

银纳米粒子（Ag NPs）具有卓越的抗菌特性，受到广泛关注。然而，银纳米粒子分散性差、易聚集，会严重削弱其抗菌功效，限制了其实际应用。在这项工作中，我们报告了一种制备氧化石墨烯（GO）纳米复合材料（Mg-GO/Ag NPs）的简单方法。Ag NPs 的平均直径约为 11.14 nm，均匀地沉积在 GO 表面。与 GO 相比，Mg-GO/Ag NPs 在去离子水（DW）和 N，N-二甲基甲酰胺（DMF）中的分散性明显提高。气相色谱-质谱法（GC-MS）揭示了制备 Mg-GO/Ag NPs 的反应原理。此外，我们还研究了 Mg-GO/Ag NPs 涂层对海洋细菌和锚藻的抗菌性能。本研究介绍了一种制备高效银基防污涂层的新方法，具有广泛的海洋防污应用潜力。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.