Szczegóły publikacji
Opis bibliograficzny
The atomic structure of $Ti_{2}C$ and $Ti_{3}C_{2}$ MXenes is responsible for their antibacterial activity toward $E. coli$ bacteria / Agnieszka Maria Jastrzębska, Ewa Karwowska, Tomasz Wojciechowski, Wanda Ziemkowska, Anita Rozmysłowska, Leszek CHLUBNY, Andrzej Olszyna // Journal of Materials Engineering and Performance ; ISSN 1059-9495. — 2019 — vol. 28 iss. 3 spec. iss. focus: Nanotechnology, s. 1272–1277. — Bibliogr. s. 1276–1277. — Publikacja dostępna online od: 2018-02-23. — ACE-X 2017 : 11th international conference on Advanced Computational Engineering and experimenting : Vienna, 3–6 July 2017 ; DSL 2017 : 13th international conference on Diffusion in Solids and Liquids : Vienna, 26–30 June 2017
Autorzy (7)
- Jastrzębska Agnieszka M.
- Karwowska Ewa
- Wojciechowski Tomasz
- Ziemkowska Wanda
- Rozmysłowska Anita
- AGHChlubny Leszek
- Olszyna Andrzej
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 121048 |
|---|---|
| Data dodania do BaDAP | 2019-04-24 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s11665-018-3223-z |
| Rok publikacji | 2019 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Materials Engineering and Performance |
Abstract
The expanded Ti 2 C and Ti 3 C 2 MXene phases were synthesized from their parent Ti 2 AlC and Ti 3 AlC 2 MAX phases using the same conditions of the classical acidic aluminum extraction method. The assumption for the study was that the expanded Ti 2 C and Ti 3 C 2 MXenes are composed of the same atoms and if are synthesized from MAX phases using the same conditions of the classical acidic aluminum extraction method, the observed bio-effects can be related only to the changes in their structures. The scanning electron microscope investigations indicated that the expanded Ti 2 C and Ti 3 C 2 sheets formed the specific network of slit-shaped nano-pores. The x-ray photoelectron spectroscopy for chemical analysis (ESCA-XPS) showed almost no difference in surface chemistry of Ti 2 C and Ti 3 C 2 MXenes. The high-resolution transmission electron microscope investigations revealed, however, differences in atomic structure of the individual Ti 2 C and Ti 3 C 2 sheets. Measured distance between Ti-C atomic layers in Ti 2 C was 9.76 Å and was larger by 0.53 Å in comparison with Ti 3 C 2 (9.23 Å). Our investigations of bioactive properties toward model gram-negative Escherichia coli bacterial strain showed that the Ti 2 C MXene did not influence the viability of bacteria. Contrarily, the Ti 3 C 2 MXene showed antibacterial properties. The results of the study indicate that the structure at the atomic scale may play a key role in the bioactivity of MXenes of the same chemical composition, but different stoichiometry, just like in case of Ti 2 C and Ti 3 C 2 . © 2018, ASM International.
