Antibacterial and Bioactive Coatings Based on Radio Frequency Co-Sputtering of Silver Nanocluster-Silica Coatings on PEEK/Bioactive Glass Layers Obtained by Electrophoretic Deposition

Ur Rehman MA, Ferraris S, Goldmann WH, Perero S, Bastan FE, Nawaz Q, Confiengo GGd, Ferraris M, Boccaccini AR (2017)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2017

Journal

ACS Applied Materials and Interfaces American Chemical Society

Book Volume: 9

Pages Range: 32489-32497

Journal Issue: 38

DOI: 10.1021/acsami.7b08646

Abstract

Bioactive and antibacterial coatings on stainless steel substrates were developed and characterized in this study. Silver nanocluster–silica composite coatings of 60–150 nm thickness were deposited using radio frequency (RF) co-sputtering on PEEK/bioactive glass (BG) layers (of 80–90 μm thickness) which had been electrophoretically deposited onto stainless steel. Two sputtering conditions were used by varying the deposition time (15 and 40 min); the resulting microstructure, composition, adhesion strength, in vitro bioactivity, and antibacterial activity were investigated. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDX) confirmed the presence of silver nanoclusters, which were homogeneously embedded in the silica matrix. The isoelectric point of the coatings and their charge at physiological pH were determined by zeta potential measurements. The presence of BG particles in the PEEK/BG layer allows the coatings to form apatite-like crystals upon immersion in simulated body fluid (SBF). Moreover, silver nanoclusters embedded in the silica matrix as a top layer provided an antibacterial effect against Escherichia coli and Staphylococcus carnosus.

Authors with CRIS profile

Muhammad Atiq Ur Rehman Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Qaisar Nawaz Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Politecnico di Torino IT Italy (IT) Sakarya Üniversitesi (Sakarya University) TR Turkey (TR)

How to cite

APA:

Ur Rehman, M.A., Ferraris, S., Goldmann, W.H., Perero, S., Bastan, F.E., Nawaz, Q.,... Boccaccini, A.R. (2017). Antibacterial and Bioactive Coatings Based on Radio Frequency Co-Sputtering of Silver Nanocluster-Silica Coatings on PEEK/Bioactive Glass Layers Obtained by Electrophoretic Deposition. ACS Applied Materials and Interfaces, 9(38), 32489-32497. https://dx.doi.org/10.1021/acsami.7b08646

MLA:

Ur Rehman, Muhammad Atiq, et al. "Antibacterial and Bioactive Coatings Based on Radio Frequency Co-Sputtering of Silver Nanocluster-Silica Coatings on PEEK/Bioactive Glass Layers Obtained by Electrophoretic Deposition." ACS Applied Materials and Interfaces 9.38 (2017): 32489-32497.

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