The role of Ag particles deposited on TiO2 or Al 2O3 self-organized nanoporous layers in their behavior as SERS-active and biomedical substrates

Marcin Pisarek , Agata Roguska , Andrzej Kudelski , Mariusz Andrzejczuk , Maria Janik-Czachor , Krzysztof Kurzydłowski

Abstract

In this paper, we present recent results of investigations of hybrid materials consisting of nanoporous oxides layers loaded with Ag nanoparticles: Ag/TiO2-n/Ti and Ag/Al2O3-n/Al (where "n-"stands for nanotubes), which could be used as active SERS substrates or as bioactive materials in medicine (implants). Simple electrochemical, chemical and physical methods appear suitable for fabricating such hybrid materials having different functional properties. Such materials may play a double role, as our investigations have shown: they are active and stable substrates in SERS investigations of adsorbate-adsorbent interactions (Ti- or Al-based materials) as well as biocompatible and bactericidal substrates (Ti-based composites). In both applications-SERS and bio-Ag nanoparticles play a crucial role. The new hybrid materials were characterized by high-resolution SEM and surface analytical techniques: local AES, XPS, SERS (Surface-Enhanced Raman Spectroscopy). For the biomedical applications, the hybrid materials were tested with the use of S. epidermidis cells (antibacterial tests), as well as in U2OS cell culture (to study living cell adhesion and alkaline phosphatase activity, ALP). The tests have shown the highly beneficial role of Ag nanoparticles in enhancing the functional properties of the new hybrid materials. © 2013 Elsevier B.V. All rights reserved.

Author Marcin Pisarek - Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN) [Polish Academy of Sciences (PAN)]
Marcin Pisarek,,
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, Agata Roguska - Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN) [Polish Academy of Sciences (PAN)]
Agata Roguska,,
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, Andrzej Kudelski - Faculty of Chemistry (WChUW) [University of Warsaw (UW)]
Andrzej Kudelski,,
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, Mariusz Andrzejczuk (FMSE / DMD)
Mariusz Andrzejczuk,,
- Division of Materials Design
, Maria Janik-Czachor - Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN) [Polish Academy of Sciences (PAN)]
Maria Janik-Czachor,,
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, Krzysztof Kurzydłowski (FMSE / DMD)
Krzysztof Kurzydłowski,,
- Division of Materials Design
Journal seriesMaterials Chemistry and Physics, ISSN 0254-0584
Issue year2013
Vol139
Pages55-65
Publication size in sheets0.5
Keywords in EnglishOxides Nanostructures Biomaterials Raman spectroscopy and scattering Electron microscopy (STEM, TEM and SEM)
ASJC Classification2500 General Materials Science; 3104 Condensed Matter Physics
DOIDOI:10.1016/j.matchemphys.2012.11.076
URL https://www.sciencedirect.com/science/article/pii/S0254058412010346?via%3Dihub
Languageen angielski
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 10-06-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 10-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 31; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.254; WoS Impact Factor: 2013 = 2.129 (2) - 2013=2.427 (5)
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