Self-assembled zinc oxide hierarchical structures with enhanced antibacterial properties from stacked chain-like zinc oxalate compounds
| Autor: | Greta Patrinoiu, Andrei Cucos, Oana Carp, Diana Pelinescu, Dana C. Culita, Coralia Bleotu, Cornel Munteanu, Raluca Dumitru, Jose M. Calderon-Moreno, Mariana Carmen Chifiriuc, R. Birjega |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Biocompatibility Surface Properties chemistry.chemical_element Microbial Sensitivity Tests 02 engineering and technology Zinc Gram-Positive Bacteria 010402 general chemistry 01 natural sciences Redox Oxalate Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Gram-Negative Bacteria Particle Size Oxalates Molecular Structure Dopant Hydrogen bond Thermal decomposition 021001 nanoscience & nanotechnology Anti-Bacterial Agents 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Chemical engineering Zinc Compounds Biofilms Crystallite Zinc Oxide 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 552:258-270 |
| ISSN: | 0021-9797 |
| Popis: | Single ZnO crystallites assembled into porous hierarchical structures have been prepared by topotactic thermal decomposition of in situ obtained zinc oxalate precursors, whose synthesis involves a redox reaction between 1,2-ethanediol and nitrate ion. For the first time it was demonstrated that post-synthesis protocols of the precursors (e.g. ultrasound irradiation, hydrolytic decomposition) master the hydrogen bonds formed between oxalate chains, allowing that way the adjustment of materials properties (morphology, porosity and optical) and a rational introduction of different dopants (Eu3+/Er3+). The ZnO surface reactivity is confirmed by the significant biocidal activity of the obtained materials against Gram-positive and Gram-negative planktonic and biofilm-embedded cells, superior to those reported in the literature for other ZnO-based materials or antibiotics, associated also with a good biocompatibility. |
| Databáze: | OpenAIRE |
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