Dataset for publication_ Int J Mol Sci 2024 25(16) 8824 funded by the National Science Centre, Poland (grant number 2023/07/X/ST5/01519) MINIATURA7
Data
2024Autor
Kisielewska, Aneta
Shakeel, Nasir
Piwoński, Ireneusz
Krzywiecki, Maciej
Batory, Damian
Cichomski, Michał
Metadata
Pokaż pełny rekordStreszczenie
This study aims to improve the photocatalytic properties of titanium dioxide nanorods
(TNRs) and other related nanostructures (dense nanorods, needle-like nanorods, nanoballs, and
nanoflowers) by modifying them with silver nanoparticles (AgNPs). This preparation is carried out
using a two-step method: sol–gel dip-coating deposition combined with hydrothermal crystal growth.
Further modification with AgNPs was achieved through the photoreduction of Ag+ ions under UV
illumination. The investigation explores the impact of different growth factors on the morphological
development of TiO2 nanostructures by modulating (i) the chemical composition, the water:acid ratio,
(ii) the precursor concentration involved in the hydrothermal process, and (iii) the duration of the
hydrothermal reaction. Morphological characteristics, including the length, diameter, and nanorod
density of the nanostructures, were analyzed using scanning electron microscope (SEM). The chemical
states were determined through use of the X-ray photoelectron spectroscopy (XPS) technique, while
phase composition and crystalline structure analysis was performed using the Grazing Incidence
X-ray Diffraction (GIXRD) method. The results indicate that various nanostructures (dense nanorods,
needle-like nanorods, nanoballs, and nanoflowers) can be obtained by modifying these parameters.
The photocatalytic efficiency of these nanostructures and Ag-coated nanostructures was assessed
by measuring the degradation of the organic dye rhodamine B (RhB) under both ultraviolet (UV)
irradiation and visible light. The results clearly show that UV light causes the RhB solution to
lose its color, whereas under visible light RhB changes into rhodamine 110, indicating a successful
photocatalytic transformation. The nanoball-like structures’ modification with the active metal
silver (TNRs 4 Ag) exhibited high photocatalytic efficiency under both ultraviolet (UV) and visible
light for different chemical composition parameters. The nanorod structure (TNRs 2 Ag) is more
efficient under UV, but under visible-light photocatalyst, the TNRs 6 Ag (dense nanorods) sample is
more effective.
Collections
Z tą pozycją powiązane są następujące pliki licencyjne: