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ORUDZHEV, F. RAMAZANOV, S. SOBOLA, D. ISAEV, A. WANG, C. MAGOMEDOVA, A. KADIEV, M. KAVIYARASU, K.
Original Title
Atomic Layer Deposition of Mixed-Layered Aurivillius Phase on TiO2 Nanotubes: Synthesis, Characterization and Photoelectrocatalytic Properties
Type
journal article in Web of Science
Language
English
Original Abstract
For the first time, one-dimensional phase-modulated structures consisting of two different layered Aurivillius phases with alternating five and six perovskite-like layers were obtained by atomic layer deposition (ALD) on the surface of TiO2 nanotubes (Nt). It was shown that the use of vertically oriented TiO2 Nt as the substrate and the ALD technology of a two-layer Bi2O3-FeOx sandwich-structure make it possible to obtain a layered structure due to self-organization during annealing. A detailed study by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that the coating is conformal. Raman spectroscopic analysis indicated the structure of the layered Aurivillius phases. Transient photocurrent responses under Ultraviolet–Visible (UV-Vis) light irradiation show that the ALD coating benefits the efficiency of photon excitation of electrons. The results of the photoelectrocatalytic experiments (PEC) with methyl orange degradation as a model demonstrate the significant potential of the synthesized structure as a photocatalyst. Photoluminescent measurement showed a decrease in the probability of recombination of photogenerated electron–hole pairs for ALD-coated TiO2 Nt, which demonstrates the high potential of these structures for use in photocatalytic and photoelectrochemical applications
Keywords
atomic layer deposition; photocatalysis; photoelectrocatalysis; TiO2 nanotubes; Aurivillius phase; layered perovskite
Authors
ORUDZHEV, F.; RAMAZANOV, S.; SOBOLA, D.; ISAEV, A.; WANG, C.; MAGOMEDOVA, A.; KADIEV, M.; KAVIYARASU, K.
Released
2. 11. 2020
Publisher
MDPI
ISBN
2079-4991
Periodical
Nanomaterials
Year of study
10
Number
11
State
Swiss Confederation
Pages from
1
Pages to
16
Pages count
URL
https://www.mdpi.com/2079-4991/10/11/2183
Full text in the Digital Library
http://hdl.handle.net/11012/195832
BibTex
@article{BUT166393, author="Farid {Orudzhev} and Shihgasan {Ramazanov} and Dinara {Sobola} and Abdulgalim {Isaev} and Chuanyi {Wang} and Asiyat {Magomedova} and Makhmud {Kadiev} and Kasinathan {Kaviyarasu}", title="Atomic Layer Deposition of Mixed-Layered Aurivillius Phase on TiO2 Nanotubes: Synthesis, Characterization and Photoelectrocatalytic Properties", journal="Nanomaterials", year="2020", volume="10", number="11", pages="1--16", doi="10.3390/nano10112183", issn="2079-4991", url="https://www.mdpi.com/2079-4991/10/11/2183" }