Optical properties, photocatalytic and bactericide activity of pure and Ag-decorated Zr, al-doped ZnO

Leonid Akhkozov, Oksana Gorban, Igor Danilenko, Sergii Gorban, Galina Volkova, Iryna Bryukhanova, Olesya Shapovalova, Svetlana Lyubchik, Tetyana Konstantinova

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationNANOCON 2019 - Conference Proceedings, 11th International Conference on Nanomaterials - Research and Application
PublisherTANGER Ltd.
Pages186-192
Number of pages7
ISBN (Electronic)9788087294956
DOIs
Publication statusPublished - 2020
Event11th International Conference on Nanomaterials - Research and Application, NANOCON 2019 - Brno, Czech Republic
Duration: 16 Oct 201918 Oct 2019

Publication series

NameNANOCON Conference Proceedings - International Conference on Nanomaterials
PublisherTANGER Ltd.
Volume2020-October
ISSN (Print)2694-930X

Conference

Conference11th International Conference on Nanomaterials - Research and Application, NANOCON 2019
CountryCzech Republic
CityBrno
Period16/10/1918/10/19

Keywords

  • Ag-decorated ZnO
  • Defects
  • ESR
  • Phenol degradation
  • Wide gap oxide doped ZnO
  • ZnO

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