Synthesis, Characterization and Photocatalytic Activity of Nb-Doped TiO&lt;sub&gt;2&lt;/sub&gt; Nanoparticles

Li, Xuan Dong; Han, Xiaolin; Wang, Wen Ying; Liu, Xiao Hong; Wang, Yan; Liu, Xin Rong

doi:10.4028/scientific5/amr.455-456.110

Cited by 1 publication

(2 citation statements)

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“…In those works, an increased photocatalytic degradation of dyes obtained from Nb-doped TiO2 was ascribed to the extended light absorption range and the suppression of electron hole pair recombination upon Nb loading. According to the literatures and the fact that Niobium acting as an electron trap [28], an enhanced photocatalytic activity of Nb-loaded ZnO NPs found in our study was likely ascribed to a decrease of electron-hole pair recombination and thus promoting the photocatalytic activity of TiO2 [24,27]. If the amount of Nb loading is higher than the optimal value, the activity of ZnO NPs will begin to go down inversely.…”

Section: Photocatalytic Activity and Mechanismsupporting

confidence: 57%

“…Enhanced photocatalytic efficiencies upon loading the semiconductor photocatalysts with Niobium were previously observed in the works of Yang et al [26] and Li et al [27]. In those works, an increased photocatalytic degradation of dyes obtained from Nb-doped TiO2 was ascribed to the extended light absorption range and the suppression of electron hole pair recombination upon Nb loading.…”

Section: Photocatalytic Activity and Mechanismmentioning

confidence: 69%

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Photocatalytic Degradation of Phenol Using Nb-Loaded ZnO Nanoparticles

Kruefu¹,

Ninsonti²,

Wetchakun³

et al. 2012

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Niobium-loaded Zinc Oxide nanoparticles (Nb-loaded ZnO NPs) in the range of 20 and 40 nm were synthesized by Flame Spray Pyrolysis (FSP) technique. The crystalline phase, morphology and size of the nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis spectroscopy. The specific surface area of the nanoparticles was measured by nitrogen adsorption (BET analysis). The unloaded ZnO and Nb-loaded ZnO NPs were found to have the clear spherical, hexagonal and rod-like morphologies. In this study, the photocatalytic activities of unloaded ZnO and Nb-loaded ZnO NPs were determined by studying the mineralization of phenol under UV light illumination. The results indicated that all Nbloaded ZnO NPs have better photocatalytic activity than the unloaded ZnO nanoparticles. It was found that, 0.50 mol% Nb-loaded ZnO NPs exhibited the fastest response to the degradation of phenol.

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Section: Photocatalytic Activity and Mechanismsupporting

confidence: 57%

Section: Photocatalytic Activity and Mechanismmentioning

confidence: 69%