Magnetically guidable single TiO2 nanotube photocatalyst: Structure and photocatalytic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU147485" target="_blank" >RIV/00216305:26620/23:PU147485 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/23:39920422

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0272884222037786?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884222037786?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2022.10.197" target="_blank" >10.1016/j.ceramint.2022.10.197</a>

Result language

angličtina

Original language name

Magnetically guidable single TiO2 nanotube photocatalyst: Structure and photocatalytic properties

Original language description

The influence of annealing temperature, the crystallinity, textural properties of magnetically guidable anodic TiO2 nanotubes in form of single tube powders on the photocatalytic decomposition of model organic dye is investigated for the first time. The powders were prepared from self-organized anodic TiO2 nanotube layers (grown on Ti) by etching in piranha solution, detaching them from the Ti substrate, and annealing in a wide range of temperatures (400-900 degrees C). The nanotubular shape was preserved up to 800 degrees C. Powders annealed up to 800 degrees C did not contain any detectable rutile phase, which is unique among other TiO2 nanomaterials at this temperature. Part of the obtained TiO2 ST-NT powders was decorated with Fe3O4 nanoparticles using an oleic acid-based synthesis. The TiO2 ST-NT and TiO2 ST-NT@Fe3O4NPs powders were characterized in terms of morphology, crystallinity, and specific surface area. Finally, all materials were exploited for the photocatalytic decomposition of a model dye. The best photocatalytic performance of TiO2 ST-NT and TiO2 ST-NT@Fe3O4NPs powders were obtained at annealing temperatures of 600 and 700 degrees C, respectively. The synergy resulting from annealing, crystallite size, and specific surface area enhances the photocatalytic activity of TiO2 ST-NT and TiO2 ST-NT@Fe3O4NPs powders under UV light. This approach goes beyond the classical Kasuga alkaline hydrothermal approach, enabling the preparation of large quantity of TiO2 nanotubes without any impurities (such as e.g. Na or Ca content resulting from the Kasuga approach).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21001 - Nano-materials (production and properties)

Project

<a href="/en/project/EF16_013%2F0001829" target="_blank" >EF16_013/0001829: Modernization and upgrade of the CEMNAT infrastructure</a><br>

Continuities

—

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

CERAMICS INTERNATIONAL

ISSN

0272-8842

e-ISSN

1873-3956

Volume of the periodical

49

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

6764-6771

UT code for WoS article

000923654600001

EID of the result in the Scopus database

2-s2.0-85140217692