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

Loading...
Thumbnail Image
Date
2022
Authors
Ciobanu, Vladimir
Ursaki, Veaceslav V.
Lehmann, Sebastian
Braniste, Tudor
Raevschi, Simion
Zalamai, Victor V.
Monaico, Eduard V.
Colpo, Pascal
Nielsch, Kornelius
Tiginyanu, Ion M.
Volume
12
Issue
12
Journal
Crystals : open access journal
Series Titel
Book Title
Publisher
Basel : MDPI
Link to publishers version
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.

Description
Keywords
License
CC BY 4.0 Unported