External electric and magnetic fields enhanced photocatalytic efficiency of TiO2 nanoparticulate films prepared by sparking process

Hankhuntod, A.; Thongpan, Winai; Pooseekheaw, Porntipa; Kantarak, Ekkapong; Sroila, Wattikon; Panthawan, Arisara; Kumpika, Tewasin; Singjai, Pisith; Thongsuwan, Wiradej

doi:10.1016/j.matlet.2021.130147

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…The surfaces of nanostructures and amorphous phases always display the unpaired spins due to incomplete passivation of dangling bonds of surface ions 26 . Consequently, general nanoparticles immediately after releasing from the wires are probably contain many dangling bonds, which are easily polarized under the magnetic field 27 . Commonly, the spins of dangling bonds on the surface of nanoparticles are randomly oriented.…”

Section: Resultsmentioning

confidence: 99%

Effect of magnetic field on improvement of photocatalytic performance of V2O5/TiO2 nanoheterostructure films prepared by sparking method

Pooseekheaw

Thongpan

Kantarak

et al. 2022

Sci Rep

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Our porous V2O5/TiO2 nanoheterostructure films (with a Ti/V atomic ratio of 1:1) were fabricated via a single-step sparking method using a strong magnetic field (0.5 T) without annealing requirement for the first time. We found that the magnetic flux arrangement has effect on film crystallization, unique morphology, large specific surface area, and surprisingly controllable phase structure of the films. An amorphous TV film was transformed to the TiO2 (anatase/rutile) phase (for TVN) and V2O5–VO2 mixed-phase (for TVH) without destroying the mesopores from an annealing process. Moreover, the TVH sample able to improve the degradation rate up to 270% compared with pre-annealed TV films and up to 30% with post-annealed (400 °C) TVA films. In this paper, the influence of magnetic flux arrangement on structural, morphological, optical, and photocatalytic properties of prepared sample have been investigated and reported.

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Section: Resultsmentioning

confidence: 99%

Effect of magnetic field on improvement of photocatalytic performance of V2O5/TiO2 nanoheterostructure films prepared by sparking method

Pooseekheaw

Thongpan

Kantarak

et al. 2022

Sci Rep

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Effect of UV light irradiation on the In2O3 nanoparticle films synthesis by the sparking method

et al. 2023

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Photocatalytic efficiency under visible light of a novel Cu–Fe oxide composite films prepared by one-step sparking process

Panthawan

Jumrus

Sanmuangmoon

et al. 2022

Sci Rep

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Copper–iron (Cu–Fe) oxide composite films were successfully deposited on quartz substrate by a facile sparking process. The nanoparticles were deposited on the substrate after sparking off the Fe and Cu tips with different ratios and were then annealed at different temperatures. The network particles were observed after annealing the film at 700 °C. Meanwhile, XRD, XPS and SAED patterns of the annealed films at 700 °C consisted of a mixed phase of CuO, γ-Fe2O3, CuFe2O4 and CuFe2O. The film with the lowest energy band gap (Eg) of 2.56 eV was observed after annealing at 700 °C. Interestingly, the optimum ratio and annealing temperature show the photocatalytic activity under visible light higher than 20% and 30% compare with the annealed TiO2 at 500 and 700 °C, respectively. This is a novel photocatalyst which can be replaced TiO2 for photocatalytic applications in the future.

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External electric and magnetic fields enhanced photocatalytic efficiency of TiO2 nanoparticulate films prepared by sparking process

Cited by 3 publications

References 22 publications

Effect of magnetic field on improvement of photocatalytic performance of V2O5/TiO2 nanoheterostructure films prepared by sparking method

Effect of magnetic field on improvement of photocatalytic performance of V2O5/TiO2 nanoheterostructure films prepared by sparking method

Effect of UV light irradiation on the In2O3 nanoparticle films synthesis by the sparking method

Photocatalytic efficiency under visible light of a novel Cu–Fe oxide composite films prepared by one-step sparking process

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