Investigation of the Antibacterial Properties of Silver-Doped Amorphous Carbon Coatings Produced by Low Pressure Magnetron Assisted Acetylene Discharges

Hospital-acquired infections are responsible for a significant part of morbidity and mortality. Among the possible modes of transmission, this study focuses on environmental surfaces by developing innovative antibacterial coatings that can be applied on interior fittings in hospitals. This work aims...

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Bibliographic Details
Published in:International journal of molecular sciences 2022-01, Vol.23 (1), p.563
Main Authors: Job, Valentin, Laloy, Julie, Maloteau, Vincent, Haye, Emile, Lucas, Stéphane, Penninckx, Sébastien
Format: Article
Language:English
Subjects:
a-C:H
Acetylene
Acetylene - chemistry
Aging
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibacterial activity
antibacterial coating
Antibacterial materials
Bacteria
Carbon
Carbon - chemistry
Chemical composition
Chemical Phenomena
Chemical vapor deposition
Coated Materials, Biocompatible
Coatings
diffusion
E coli
Gram-positive bacteria
Hydrogenation
Low pressure
Magnetic properties
Medical personnel
Microbial Sensitivity Tests - methods
Morbidity
nanomaterials
Nanoparticles
Nanostructures - chemistry
Nosocomial infections
Particle Size
Silver
Silver - chemistry
Spectrum Analysis
Stainless steel
Staphylococcus infections
Surface Properties
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Summary:Hospital-acquired infections are responsible for a significant part of morbidity and mortality. Among the possible modes of transmission, this study focuses on environmental surfaces by developing innovative antibacterial coatings that can be applied on interior fittings in hospitals. This work aims to optimize a coating made of an amorphous carbon matrix doped with silver (a-C:H:Ag) produced by a hybrid PVD/PECVD process and to evaluate its antibacterial activity. We present a coating characterization (chemical composition and morphology) as well as its stability in an ageing process and after multiple exposures to bacteria. The antibacterial activity of the coatings is demonstrated against (Gram-negative) and (Gram-positive) bacteria through several bioassays. Moreover, the data suggest a crucial role of silver diffusion towards the surface and nanoparticle formation to explain the very promising anti-bacterial activities reported in this work.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms23010563