OPTICAL PROPERTIES, PHOTOCATALYTIC AND BACTERICIDE ACTIVITY OF PURE AND AG-DECORATED ZR, AL-DOPED ZNO

1 Akhkozov Leonid
Co-authors:
1 Gorban Oksana 1 Danilenko Igor 1 Gorban Sergii 1 Volkova Galina 1 Bryukhanova Iryna 2 Shapovalova Olesya 3 Lyubchik Sergii 1 Konstantinova Tetyana
Institutions:
1 Materials science department, Donetsk institute for physics and engineering NAS of Ukraine, Kyiv, Nauki av. 46, Ukraine 0368, akhkleo@gmail.com
2 REQUIMTE, Associated Laboratory of Green Chemistry, Faculty of Science and Technology, University Nova de Lisboa, Caparica, Portugal
3 NOVA ID FCT, Campus de Caparica, Caparica, Portugal
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
186-192
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
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Abstract

Structure, optical and photocatalytic properties for wide band gap oxide doped zinc oxide are investigated by XRD, ESR and UV-visible spectroscopy. It was shown the introduction of Al2O3 or ZrO2 led to form of structural defects in zinc oxide matrix. According ESR data a small amount of ZrO2 (0.01 mol.%) in ZnO forms a defects of donor nature, while the same amount of Al2O3 in ZnO matrix led forming as acceptor and as donor defects. Observed tail and shift of optical band gap confirmed ESR data. It was shown the increasing of donor defects in structure ZnO led to increase of photocatalytic activity to phenol degradation. It was shown the dopant types also determined a kind of intermediates of phenol degradation and possible mechanism. For Ag-decorated doped ZnO it is also shown that mechanism of phenol degradation contain a redox cycle. It was shown the bactericide activity of Ag-decorated ZrO2-doped ZnO to S.aureus is better than E.coli.

Keywords: ZnO, defects, ESR, Ag-decorated ZnO, wide gap oxide doped ZnO, phenol degradation
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