Prominent bactericidal characteristics of silver-copper nanocomposites produced via pulse laser ablation

IF 5.5 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

Materials Science & Engineering C-Materials for Biological Applications Pub Date : 2022-11-01 DOI:10.1016/j.bioadv.2022.213136

Mahmood Alhajj , Md Safwan Abd Aziz , Fahrul Huyop , A.A. Salim , Sunita Sharma , S.K. Ghoshal

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引用次数: 6

Abstract

This paper reports the characterization and antibacterial performance evaluation of some spherical and stable crystalline silver (Ag)/copper (Cu) nanocomposites (Ag-CuNCs) prepared in deionized water (DIW) using pulse laser ablation in liquid (PLAL) method. The influence of various laser fluences (LFs) on the structural, morphological, optical and antibacterial properties of these NCs were determined. The UV–Vis absorbance of these NCs at 403 nm and 595 nm was gradually increased accompanied by a blue shift. XRD patterns disclosed the nucleation of highly crystalline Ag-CuNCs with their face centered cubic lattice structure. TEM images showed the existence of spherical NCs with size range of 3–20 nm and lattice fringe spacing of approximately 0.145 nm. EDX profiles of Ag-CuNCs indicated their high purity. The antibacterial effectiveness of the Ag-CuNCs was evaluated by the inhibition zone diameter (IZD) and optical density (OD600) tests against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. The proposed NCs revealed the IZD values in the range of 22–26 mm and 20–25 mm when tested against E. coli and S. aureus bacteria, respectively. The Ag-CuNCs prepared at LF of 14.15 J/cm² revealed the best bactericidal activity. It is established that by controlling the laser fluence the bactericidal effectiveness of the Ag-CuNCs can be tuned.

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脉冲激光烧蚀制备的银-铜纳米复合材料具有显著的杀菌特性

本文报道了用脉冲激光烧蚀法(PLAL)在去离子水(DIW)中制备的球形稳定结晶银/铜纳米复合材料(Ag- cuncs)的表征和抗菌性能评价。研究了不同激光效应对纳米纤维素的结构、形态、光学和抗菌性能的影响。NCs在403 nm和595 nm处的UV-Vis吸光度逐渐增加，并伴有蓝移。XRD图谱揭示了ag - cccs的高结晶成核，具有面心立方晶格结构。TEM图像显示存在3 ~ 20 nm的球形nc，晶格条纹间距约为0.145 nm。Ag-CuNCs的EDX谱显示其高纯度。通过抑菌带直径(IZD)和光密度(OD600)试验对革兰氏阴性菌(大肠杆菌)和革兰氏阳性菌(金黄色葡萄球菌)的抑菌效果进行评价。所构建的NCs对大肠杆菌和金黄色葡萄球菌的IZD值分别为22 ~ 26 mm和20 ~ 25 mm。在14.15 J/cm2下制备的Ag-CuNCs杀菌活性最好。通过控制激光辐照量，可以调节ag - ccc的杀菌效果。

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 Science & Engineering C-Materials for Biological Applications 工程技术-材料科学：生物材料

CiteScore

17.80

自引率

0.00%

发文量

501

审稿时长

27 days

期刊介绍： Biomaterials Advances, previously known as Materials Science and Engineering: C-Materials for Biological Applications (P-ISSN: 0928-4931, E-ISSN: 1873-0191). Includes topics at the interface of the biomedical sciences and materials engineering. These topics include: • Bioinspired and biomimetic materials for medical applications • Materials of biological origin for medical applications • Materials for "active" medical applications • Self-assembling and self-healing materials for medical applications • "Smart" (i.e., stimulus-response) materials for medical applications • Ceramic, metallic, polymeric, and composite materials for medical applications • Materials for in vivo sensing • Materials for in vivo imaging • Materials for delivery of pharmacologic agents and vaccines • Novel approaches for characterizing and modeling materials for medical applications Manuscripts on biological topics without a materials science component, or manuscripts on materials science without biological applications, will not be considered for publication in Materials Science and Engineering C. New submissions are first assessed for language, scope and originality (plagiarism check) and can be desk rejected before review if they need English language improvements, are out of scope or present excessive duplication with published sources. Biomaterials Advances sits within Elsevier''s biomaterials science portfolio alongside Biomaterials, Materials Today Bio and Biomaterials and Biosystems. As part of the broader Materials Today family, Biomaterials Advances offers authors rigorous peer review, rapid decisions, and high visibility. We look forward to receiving your submissions!