Journal Article

FZJ-2020-03898

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Enhanced antibacterial performance of ultrathin silver/platinum nanopatches by a sacrificial anode mechanism

Abuayyash, A. ; Ziegler, N. ; Meyer, H. ; Meischein, M. ; Sengstock, C. ; Moellenhoff, J. ; Rurainsky, C. ; Heggen, M.FZJ* ; Garzón-Manjón, A. ; Scheu, C. ; Tschulik, K. ; Ludwig, A. ; Köller, M. (Corresponding author)

2020
Elsevier New York, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/25937  doi:10.1016/j.nano.2019.102126

Abstract: The development of antibacterial implant surfaces is a challenging task in biomaterial research. We fabricated a highly antibacterial bimetallic platinum (Pt)/silver(Ag) nanopatch surface by short time sputtering of Pt and Ag on titanium. The sputter process led to a patch-like distribution with crystalline areas in the nanometer-size range (1.3–3.9 nm thickness, 3–60 nm extension). Structural analyses of Pt/Ag samples showed Ag- and Pt-rich areas containing nanoparticle-like Pt deposits of 1–2 nm. The adhesion and proliferation properties of S. aureus on the nanopatch samples were analyzed. Consecutively sputtered Ag/Pt nanopatches (Pt followed by Ag) induced enhanced antimicrobial activity compared to co-sputtered Pt/Ag samples or pure Ag patches of similar Ag amounts. The underlying sacrificial anode mechanism was proved by linear sweep voltammetry. The advantages of this nanopatch coating are the enhanced antimicrobial activity despite a reduced total amount of Ag/Pt and a self-limited effect due the rapid Ag dissolution.

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Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)
2. DFG project 286659497 - Bimetallische Nanopartikel der Platinmetalle (Ru, Rh, Pd, Os, Ir, Pt) und des Silbers: Synthese, Mikrostruktur und biologische Wirkung (286659497) (286659497)

Appears in the scientific report 2020

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Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Essential Science Indicators ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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