Antibacterial Ag/a-C nanocomposite coatings: The influence of nano-galvanic a-C and Ag couples on Ag ionization rates
Source abstract
Abstract
Biofilm formation has been pointed as a major concern in different industrial applications, namely on biomedical implants and surgical instruments, which has prompted the development of new strategies for production of efficient antimicrobial surfaces. In this work, nano-galvanic couples were created to enhance the antibacterial properties of silver, by embedding it into amorphous carbon (a-C) matrix. The developed Ag/a-C nanocomposite coatings, deposited by magnetron sputtering, revealed an outstanding antibacterial activity against Staphylococcus epidermidis, promoting a total reduction in biofilm formation with no bacteria counts in all dilution. The open circuit potential (OCP) tests in 0.9% NaCl confirmed that a-C shows a positive OCP value, in contrast to Ag coating, thus enhancing the ionization of biocidal Ag+ due to the nano-galvanic couple activation. This result was confirmed by the inductively coupled plasma-optical emission spectroscopy (ICP-OES), which revealed a higher Ag ionization rate in the nanocomposite coating in comparison with the Ag coating. The surface of Ag/a-C and Ag coatings immersed in 0.9% NaCl were monitored by scanning electron microscopy (SEM) over a period of 24 h, being found that the Ag ionization determined by ICP-OES was accompanied by an Ag nanoparticles coalescence and agglomeration in Ag/a-C coating.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Nanoparticles: synthesis and applications · Diamond and Carbon-based Materials Research · Bone Tissue Engineering Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (42)
Show source-provided references
1. Silver as antibacterial agent: ion, nanoparticle, and metal10.1002/anie.201205923 ↗
2. A review of the biomaterials technologies for infection-resistant surfaces10.1016/j.biomaterials.2013.07.089 ↗
3. Antibacterial surfaces for biomedical devices10.1586/erd.09.36 ↗
4. The bactericidal effect of silver nanoparticles10.1088/0957-4484/16/10/059 ↗
5. Silver nanoparticles as antimicrobial agent: a case study on E. coli as a model for Gram-negative bacteria10.1016/j.jcis.2004.02.012 ↗
6. Antimicrobial effects of silver nanoparticles10.1016/j.nano.2006.12.001 ↗
7. Negligible particle-Specific antibacterial activity of silver nanoparticles10.1021/nl301934w ↗
8. The antibacterial activity of biogenic silver and its mode of action10.1007/s00253-011-3225-3 ↗
9. Zn/Ag micro-galvanic couples formed on titanium and osseointegration effects in the presence of S.aureus10.1016/j.biomaterials.2015.06.040 ↗
10. Antibacterial effects of silver nanoparticles on gram-negative bacteria: influence on the growth and biofilms formation mechanisms of action10.1016/j.colsurfb.2012.07.039 ↗
11. Ion release kinetics and particle persistence in aqueous nano-Silver colloids10.1021/es9035557 ↗
12. The dissolution and biological effects of silver nanoparticles in biological medium10.1039/c3tb21569e ↗
13. Controlled release of biologically silver from nanosilver surfaces10.1021/nn102272n ↗
14. Antibacterial carboxymethyl cellulose/Ag nanocomposite hydrogels cross-linked with layered double hydroxides10.1016/j.ijbiomac.2015.05.002 ↗
15. Cellulose–polymer–Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds10.1016/j.carbpol.2012.12.035 ↗
16. Fabrication and characterization of bioactive and antibacterial composites for dental applications10.1016/j.actbio.2014.04.030 ↗
17. In vitro and in vivo characterization of antibacterial activity and biocompatibility: a study on silver-containing phosphonate monolayers on titanium10.1016/j.actbio.2014.12.020 ↗
18. Nanostructure: dissolution and morphology characteristics of microcidal silver films deposited by magnetron sputtering10.1016/j.actbio.2006.10.008 ↗
19. Reactive combinatorial synthesis and characterization of a gradient Ag-Ti oxide thin Film with antibacterial properties10.1016/j.actbio.2014.09.048 ↗
20. Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings10.1016/j.apsusc.2014.04.072 ↗
21. Comparison of the tribological and antimicrobial properties of CrN/Ag, ZrN/Ag, TiN/Ag, and TiN/Cu nanocomposite coatings10.1016/j.surfcoat.2010.07.029 ↗
22. PVD-grown antibacterial Ag-TiN films on piezoelectric PVDF substrates for sensor applications10.1016/j.surfcoat.2015.09.057 ↗
23. Influence of surface features on the adhesion of Staphylococcus epidermidis to Ag-TiCN thin films10.1088/1468-6996/14/3/035009 ↗
24. Silver activation on thin films of Ag–ZrCN coatings for antimicrobial activity10.1016/j.msec.2015.05.071 ↗
25. Electrochemical and antimicrobial properties of diamond like carbon-metal composite films10.1016/j.diamond.2005.08.031 ↗
26. Preparation and antibacterial properties of Ag-containing diamond-like carbon films prepared by a combination of magnetron sputtering and plasma source ion implantation10.1016/j.vacuum.2012.04.015 ↗
27. Silver-doped nanocomposite carbon coatings (Ag-DLC) for biomedical applications—physiochemical and biological evaluation10.1016/j.apsusc.2015.07.117 ↗
28. Ti 1−x Ag x electrodes deposited on polymer based sensors10.1016/j.apsusc.2014.08.142 ↗
29. Nanostructured titanium–silver coatings with good antibacterial activity and cytocompatibility fabricated by one-step magnetron sputtering10.1016/j.apsusc.2015.07.064 ↗
30. Diamond-like amorphous carbon10.1016/S0927-796X(02)00005-0 ↗
31. P. Scherrer, N.G.W. Gottingen, Math. -Phys. Kl. 2 (1918) 96.
32. Kirby-Bauer Disk Diffusion Susceptibility Test · 2016
33. Thin Film Processes
34. Structure and mechanical properties of Ag-incorporated DLC films prepared by a hybrid ion beam deposition system10.1016/j.tsf.2007.06.154 ↗
35. Microstructure and mechanical properties of Ag-containing diamond-like carbon films in mid-frequency dual-magnetron sputtering10.1016/j.apsusc.2009.08.103 ↗
36. Characterization of surface Ag nanoparticles in nanocomposite a-C:Ag coatings by grazing incidence X-ray diffraction at sub-critical angles of incidence10.1007/s00339-016-9691-9 ↗
37. Electrochemical response of ZrCN-Ag-a(C,N) coatings in simulated body fluids10.1016/j.electacta.2015.07.083 ↗
38. Surface segregation in TiO2-based nanocomposite thin films10.1088/0957-4484/23/49/495701 ↗
39. Cao · 2004
40. Antibiofilm activity of a monolayer of silver nanoparticles anchored to an amino-silanized glass surface10.1016/j.biomaterials.2013.11.047 ↗
41. Antibacterial nano-structured titania coating incorporated with silver nanoparticles10.1016/j.biomaterials.2011.04.040 ↗
42. Nanosilver as a new generation of nanoproduct in biomedical applications10.1016/j.tibtech.2010.07.006 ↗