Photocatalytic performance of Al and Nb‐doped TiO2 nanoparticles prepared by microwave‐assisted hydrothermal method

Microwave‐assisted hydrothermal synthesis of aluminum (Al)‐doped TiO2 (ALT) and niobium (Nb)‐doped TiO2 (NBT) nanoparticles were carried out. Investigations were performed to examine the crystallinity, vibrational modes, surface morphology, and composition using X‐ray diffraction (XRD), Raman spectr...

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Published inInternational journal of applied ceramic technology Vol. 20; no. 3; pp. 1963 - 1977
Main Authors Ücker, Cátia Liane, Almeida, Suelen R., Vitale, Marcelo L., Riemke, Fábio C., Ferrer, Mateus M., Moreira, Eduardo C., Raubach, Cristiane W., Cava, Sergio
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.05.2023
Subjects
Aluminum
Al‐doped TiO2
Anatase
Composition
Crystallinity
Decoloring
microwave‐assisted hydrothermal
Morphology
Nanoparticles
Nb‐doped TiO2
Niobium
Photocatalysis
Raman spectroscopy
Rhodamine
Scanning electron microscopy
Spectrum analysis
TiO2
Titanium dioxide
Vibration mode
Wavelengths
X-ray diffraction
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Summary:Microwave‐assisted hydrothermal synthesis of aluminum (Al)‐doped TiO2 (ALT) and niobium (Nb)‐doped TiO2 (NBT) nanoparticles were carried out. Investigations were performed to examine the crystallinity, vibrational modes, surface morphology, and composition using X‐ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and energy‐dispersive spectroscopy (EDS), respectively. The XRD study indicated the higher crystallinity of the ALT particles compared to the Al and Nb‐doped TiO2 (ALNBT) particles, and only the presence of the anatase phase was observed in all samples. As a result of doping, the Raman mode at ∼147 cm−1 is found to be shifted toward a higher wavenumber for both samples. SEM analysis showed the spherical morphology of ALT and NBT nanoparticles. The elemental composition peaks of Al, titanium, Nb, and oxygen were noticed by EDS measurements. Furthermore, both prepared nanoparticles were used as photocatalytic materials. The Nb and Al‐doped samples showed an improvement in the photocatalysis response in relation to the pure TiO2 sample, in which Al‐doped sample was able to decolorize 100% of rhodamine B in 75 min of analysis.
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ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.14294