Polysilazane-derived antibacterial silver–ceramic nanocomposites

Functional ceramic composites consisting of a dispersion of silver nanoparticles in a silicon (carbon)nitride matrix ( nc-Ag/Si(C)N) were prepared via the polymer–ceramic route. Mixtures of 3 wt% as-synthesized Ag nanoparticles with a commercial polysilazane were pyrolysed under flowing nitrogen and...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the European Ceramic Society 2007, Vol.27 (10), p.3287-3292
Main Authors: Bakumov, Vadym, Gueinzius, Katja, Hermann, Corinna, Schwarz, Marcus, Kroke, Edwin
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Biomedical applications
Building materials. Ceramics. Glasses
Carbides
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Medical sciences
Miscellaneous
Nanocomposites
Nitrides
Other materials
Physics
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Specific materials
Technical ceramics
Technology. Biomaterials. Equipments. Material. Instrumentation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Functional ceramic composites consisting of a dispersion of silver nanoparticles in a silicon (carbon)nitride matrix ( nc-Ag/Si(C)N) were prepared via the polymer–ceramic route. Mixtures of 3 wt% as-synthesized Ag nanoparticles with a commercial polysilazane were pyrolysed under flowing nitrogen and/or ammonia. Bulk samples as well as coatings were investigated. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), thermal analysis (TGA, DTA), absorption spectroscopy (UV–vis) and infra red (IR) spectroscopy were used to characterize the products. The results indicate that the silver nanoparticles do not influence the cross-linking and pyroylsis process of the polysilazane precursor. At temperatures in the range of 800–1000 °C (H)Si(C)N matrices are obtained, which contain silver particles with an average size of 5–7 nm. Antibacterial tests on the pyrolysed material revealed strong activity against Escherichia coli and Staphylococcus aureus, suggesting the composites to be promising candidates for applications in fields such as the biomedical or food industries.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2007.01.004