Aero-TiO2 Prepared on the Basis of Networks of ZnO Tetrapods

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Vladimir Ciobanu - , Technical University of Moldova (Author)
  • Veaceslav V. Ursaki - , Technical University of Moldova, Academy of Sciences of Moldova (Author)
  • Sebastian Lehmann - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Tudor Braniste - , Technical University of Moldova (Author)
  • Simion Raevschi - , Moldova State University (Author)
  • Victor V. Zalamai - , Technical University of Moldova (Author)
  • Eduard V. Monaico - , Technical University of Moldova (Author)
  • Pascal Colpo - , European Commission Joint Research Centre Institute (Author)
  • Kornelius Nielsch - , Chair of Metallic Materials and Metal Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Ion M. Tiginyanu - , Technical University of Moldova, Academy of Sciences of Moldova (Author)

Abstract

In this paper, new aeromaterials are proposed on the basis of titania thin films deposited using atomic layer deposition (ALD) on a sacrificial network of ZnO microtetrapods. The technology consists of two technological steps applied after ALD, namely, thermal treatment at different temperatures and etching of the sacrificial template. Two procedures are applied for etching, one of which is wet etching in a citric acid aqua solution, while the other one is etching in a hydride vapor phase epitaxy (HVPE) system with HCl and hydrogen chemicals. The morphology, composition, and crystal structure of the produced aeromaterials are investigated depending on the temperature of annealing and the sequence of the technological steps. The performed photoluminescence analysis suggests that the developed aeromaterials are potential candidates for photocatalytic applications.

Details

Original languageEnglish
Article number1753
JournalCrystals
Volume12
Issue number12
Publication statusPublished - Dec 2022
Peer-reviewedYes

Keywords

Keywords

  • aero-TiO, anatase, annealing, atomic layer deposition, luminescence, rutile, sacrificial template, spinel, titania, zinc titanate