Physical properties of V-doped TiO2 nanoparticles synthesized by sonochemical-assisted process

Kahattha, C.; Wongpisutpaisan, Narongdet; Vittayakorn, Naratip; Pecharapa, Wisanu

doi:10.1016/j.ceramint.2012.10.100

Cited by 14 publications

(4 citation statements)

References 12 publications

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“…Doping of TiO 2 oxide with 1 to 5 mol% or 5% to 12% V element has been reported by Kahattha et al and Hong et al [25,26]. Also, Al-doped TiO 2 oxide has been reported by Berger et al, Tsuchiya et al, and Nah [27-29].…”

Section: Discussionmentioning

confidence: 96%

p-Type hydrogen sensing with Al- and V-doped TiO2 nanostructures

Ding

Ning

2013

Nanoscale Res Lett

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Doping with other elements is one of the efficient ways to modify the physical and chemical properties of TiO2 nanomaterials. In the present work, anatase TiO2 nanofilms doped with Al and V elements were fabricated through anodic oxidation of Ti6Al4V alloy and further annealing treatment. Hydrogen sensing behavior of the crystallized Ti-Al-V-O nanofilms at various working temperatures was investigated through exposure to 1,000 ppm H2. Different from n-type hydrogen sensing characteristics of undoped TiO2 nanotubes, the Al- and V-doped nanofilms presented a p-type hydrogen sensing behavior by showing increased resistance upon exposure to the hydrogen-containing atmosphere. The Ti-Al-V-O nanofilm annealed at 450°C was mainly composed of anatase phase, which was sensitive to hydrogen-containing atmosphere only at elevated temperatures. Annealing of the Ti-Al-V-O nanofilm at 550°C could increase the content of anatase phase in the oxide nanofilm and thus resulted in a good sensitivity and resistance recovery at both room temperature and elevated temperatures. The TiO2 nanofilms doped with Al and V elements shows great potential for use as a robust semiconducting hydrogen sensor.

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Section: Discussionmentioning

confidence: 96%

p-Type hydrogen sensing with Al- and V-doped TiO2 nanostructures

Ding

Ning

2013

Nanoscale Res Lett

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“…In addition, TiO 2 has a high recombination rate between the electron (e − ) and hole (h + ) pairs which results in low quantum yield. Hence, in order to enhance the visible light absorption and to slow down the e − /h + recombination, one of the approaches is to dope with metal/nonmetal, such as Zn, Mn, Co, Fe, Ni, Cu, V, Cr, Mo, Ce, Zr, Au, Y, F, N, I [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] and so on. Moreover, recent reports are focused on co-doping of TiO 2 photocatalysts with different ions (metal/metal and metal/nonmetal), allowing better separation of the photogenerated electron and holes, assuring an effective enhancement of visible light adsorption together with higher photocatalytic activity [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process

et al. 2021

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A novel one-step preparation of sonochemical method was applied to synthesize Co/Zn co-doped TiO2 nanoparticles using a sonicator of 750 W, 20 kHz for 30 min at room temperature. The formation of the anatase TiO2 phase for all as-prepared samples was observed from XRD results with a crystalline size in nanoscale. The use of ultrasound allowed for the successful doping of both Co and Zn into the TiO2 lattice, which was confirmed by Synchrotron light including X-ray near edge structure (XANES) and Extended X-ray absorption fine structure (EXAFS) spectroscopy. Ti K-edge, Co K-edge, and Zn K-edge XANES spectra exhibited the dominating +4, +2, and +2 valence state of Ti, Co, and Zn in as-prepared samples, respectively. A detailed XANES and EXAFS data analysis give strong evidence that the Co/Zn dopants partially replace the Ti atom of the TiO2 host. The Co/Zn co-doping extends the light absorption of the host to the visible region and restricts the e+/h+ recombination. The photocatalytic activity of samples was tested for degradation of Rhodamine B dye solution under visible light irradiation. The as-synthesized of the co-doped catalyst was presented as highly efficient, with 2.5 and 5 times dye degradation compared with single-doped and bare TiO2.

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“…Kim et al reported that the sonochemical method is superior for the preparation of nanoscale materials and amorphous crystals [9][10]. In addition, the sonochemical method is also environmentally friendly and safe [7,11]. This paper reports the results of a research on varied Nitrogen doping on the microstructure and morphology of N-TiO 2 nano particle surface against the rate of degradation kinetics on methylene blue (MB) liquid colorant sample.…”

Section: Introductionmentioning

confidence: 99%

Morphology and Degradation Kinetics of N-Doped TiO<sub>2</sub> Nano Particle Synthesized Using Sonochemical Method

Hidayanto

Sutanto

Mukholit

et al. 2017

SSP

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Nano particle of N-doped TiO2 with the size of 21.42 nm was successfully created using sonochemical method. Concentration of Nitrogen (N) doping on TiO2 was calculated using mole ratio of Urea and TTiP. Doping variations were performed by doping 5% to 9% N, and did not change the crystallite size and strain. The nanoparticle produced has a polycrystalline structure with a dominant diffraction peak (101). Doping N into TiO2 affects the morphology of particle surface, thus tending to shrink. Results of photo catalysis on liquid samples of MB 20 ppm dye indicate that the addition of N improves the degradation ability of TiO2, with the highest value on sample T5 of 85% and with a rate of degradation kinetics of 0.024 ppm/minute.

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Physical properties of V-doped TiO2 nanoparticles synthesized by sonochemical-assisted process

Cited by 14 publications

References 12 publications

p-Type hydrogen sensing with Al- and V-doped TiO2 nanostructures

p-Type hydrogen sensing with Al- and V-doped TiO2 nanostructures

Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process

Morphology and Degradation Kinetics of N-Doped TiO<sub>2</sub> Nano Particle Synthesized Using Sonochemical Method

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