Ion exchange defines the biological activity of titanate nanotubes

Andrea Rónavári, Dávid Kovács, C. Vágvölgyi, Z. Kónya, Mónika Kiricsi, I. Pfeiffer

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

One-dimensional titanate nanotubes (TiONTs) were subjected to systematic ion exchange to determine the impact of these modifications on biological activities. Ion exchanged TiONTs (with Ag, Mg, Bi, Sb, Ca, K, Sr, Fe, and Cu ions) were successfully synthesized and the presence of the substituted ions was verified by energy dispersive X-ray spectroscopy (EDS). A complex screening was carried out to reveal differences in toxicity to human cells, as well as in antibacterial, antifungal, and antiviral activities between the various modified nanotubes. Our results demonstrated that Ag ion exchanged TiONTs exerted potent antibacterial and antifungal effects against all examined microbial species but were ineffective on viruses. Surprisingly, the antibacterial activity of Cu/TiONTs was restricted to Micrococcus luteus. Most ion exchanged TiONTs did not show antimicrobial activity against the tested bacterial and fungal species. Incorporation of various ions into nanotube architectures lead to mild, moderate, or even to a massive loss of human cell viability; therefore, this type of biological effect exerted by TiONTs can be greatly modulated by ion exchange. These findings further emphasize the contribution of ion exchange in determining not only the physical and chemical characteristics but also the bioactivity of TiONT against different types of living cells.

Original languageEnglish
JournalJournal of Basic Microbiology
DOIs
Publication statusAccepted/In press - 2016

Fingerprint

Nanotubes
Ion Exchange
Ions
Micrococcus luteus
X-Ray Emission Spectrometry
Antiviral Agents
Cell Survival
Viruses

Keywords

  • Antimicrobial activity
  • Ion exchange
  • Titanate nanotubes
  • Toxicity

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology

Cite this

Ion exchange defines the biological activity of titanate nanotubes. / Rónavári, Andrea; Kovács, Dávid; Vágvölgyi, C.; Kónya, Z.; Kiricsi, Mónika; Pfeiffer, I.

In: Journal of Basic Microbiology, 2016.

Research output: Contribution to journalArticle

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AU - Kovács, Dávid

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AU - Kiricsi, Mónika

AU - Pfeiffer, I.

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