Hybrid biocomposite with a tunable antibacterial activity and bioactivity based on RF magnetron sputter deposited coating and silver nanoparticles

A. A. Ivanova, R. A. Surmenev, M. A. Surmeneva, Timur Mukhamedrashidovich Mukhametkaliyev, K. Loza, O. Prymak, M. Epple

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In this work, we describe fabrication techniques used to prepare a multifunctional biocomposite based on a hydroxyapatite (HA) coating and silver nanoparticles (AgNPs). AgNPs synthesized by a wet chemical reduction method were deposited on Ti substrates using a dripping/drying method followed by deposition of calcium phosphate (CaP) coating via radio-frequency (RF) magnetron sputter-deposition. The negatively charged silver nanoparticles (zeta potential -21 mV) have a spherical shape with a metallic core diameter of 50 ± 20 nm. The HA coating was deposited as a dense nanocrystalline film over a surface of AgNPs. The RF-magnetron sputter deposition of HA films on the AgNPs layer did not affect the initial content of AgNPs on the substrate surface as well as NPs size and shape. SEM cross-sectional images taken using the backscattering mode revealed a homogeneous layer of AgNPs under the CaP layer. The diffraction patterns from the coatings revealed reflexes of crystalline HA and silver. The concentration of Ag ions released from the biocomposites after 7 days of immersion in phosphate and acetate buffers was estimated. The obtained results revealed that the amount of silver in the solutions was 0.27 ± 0.02 μg mL-1 and 0.54 ± 0.02 μg mL-1 for the phosphate and acetate buffers, respectively, which corresponded well with the minimum inhibitory concentration range known for silver ions in literature. Thus, this work establishes a new route to prepare a biocompatible layer using embedded AgNPs to achieve a local antibacterial effect.

Original languageEnglish
Pages (from-to)212-218
Number of pages7
JournalApplied Surface Science
Volume329
DOIs
Publication statusPublished - 1 Jan 2015

Fingerprint

Bioactivity
Silver
Durapatite
Hydroxyapatite
Nanoparticles
Coatings
Sputter deposition
Calcium phosphate
Buffers
Phosphates
Acetates
Ions
Phosphate coatings
Substrates
Zeta potential
Backscattering
Diffraction patterns
Drying
Crystalline materials
Fabrication

Keywords

  • Keywords Thin films Hydroxyapatite Multilayer structures Silver nanoparticles RF-magnetron sputtering

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Hybrid biocomposite with a tunable antibacterial activity and bioactivity based on RF magnetron sputter deposited coating and silver nanoparticles. / Ivanova, A. A.; Surmenev, R. A.; Surmeneva, M. A.; Mukhametkaliyev, Timur Mukhamedrashidovich; Loza, K.; Prymak, O.; Epple, M.

In: Applied Surface Science, Vol. 329, 01.01.2015, p. 212-218.

Research output: Contribution to journalArticle

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