Suspension plasma sprayed copper-graphene coatings for improved antibacterial properties

被引：12

作者：

Aissou, Taki ^{[1
]}

Jann, Jessica ^{[2
]}

Faucheux, Nathalie ^{[2
]}

Fortier, Louis-Charles ^{[3
]}

Braidy, Nadi ^{[1
,4
]}

Veilleux, Jocelyn ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Chem Engn & Biotechnol Engn, Plasmas Proc & Integrat Nanomat 2PIN Lab, Sherbrooke, PQ, Canada

[2] Univ Sherbrooke, Dept Chem & Biotechnol Engn, Sherbrooke, PQ, Canada

[3] Univ Sherbrooke, Fac Med & Hlth Sci, Dept Microbiol & Infect Dis, Sherbrooke, PQ, Canada

[4] Univ Sherbrooke, Inst Interdisciplinaire Innovat Technol 3IT, Sherbrooke, PQ, Canada

来源：

APPLIED SURFACE SCIENCE | 2023年 / 639卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Graphene; Copper; Suspension plasma spraying; Antibacterial coatings; RAMAN-SPECTROSCOPY; ESCHERICHIA-COLI; SPLAT MORPHOLOGY; SURFACES; NANOPARTICLES; INACTIVATION; COMPOSITES; GRAPHITE;

D O I：

10.1016/j.apsusc.2023.158204

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Copper has a long history of use as a biocidal agent. Recent studies have demonstrated that incorporating graphene into copper coatings improves their antibacterial properties. However, the implementation of coppergraphene composite coatings is currently limited by the cost and scarcity of copper, as well as the difficulty of achieving a homogeneous distribution of graphene within the copper matrix. In this study, a new approach was developed to utilize an inductively-coupled radio frequency plasma torch to spray a uniform composite coating of copper nanoparticles and graphene nanoflakes (GNFs) onto a metal substrate. The resulting composite coatings exhibit microstructural uniformity, coating splats cohesion, and GNFs retention and dispersion within the Cu matrix. Furthermore, the Cu-GNFs coatings demonstrated strong antibacterial properties, with a 99% reduction of Escherichia coli bacteria within 1 h.

引用

页数：10

共 49 条

[1] Enhanced Antibacterial Activity of Nanocrystalline ZnO Due to Increased ROS-Mediated Cell Injury [J].