Preparation and photocatalytic activity of boron-modified TiO2 under UV and visible light

Zaleska, Adriana; Sobczak, Janusz W.; Grabowska, Ewelina; Hupka, Jan

doi:10.1016/j.apcatb.2007.09.005

Cited by 226 publications

(123 citation statements)

References 30 publications

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“…However, it is active only in the ultraviolet (UV) region because of its wide band gap (3.0-3.2 eV), which accounts for less than 5% of solar energy [3]. Recent studies have revealed that the shortcoming of TiO 2 can be overcome by doping the nonmetal elements such as nitrogen [4][5][6], boron [7], sulfur [8], carbon [9], etc. For example, Asahi et al [4] reported that N-doped TiO 2 showed photocatalytic activity for the decomposition of acetone and methylene blue in wavelengths up to 550 nm because the N 2p states contribute to the band gap narrowing by mixing with O 2p states by substitutional doping of nitrogen.…”

Section: Introductionmentioning

confidence: 99%

Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

Liu

Qin

Zuo

et al. 2009

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

Liu

Qin

Zuo

et al. 2009

Journal of Hazardous Materials

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“…The typical procedures often include anaerobic conditions, different reaction steps that require many hours or days, the presence of water to hydrolyze the titanium precursor and, then, a final calcination treatment at high temperatures (400-800 °C) for some hours in order to obtain crystalline anatase [7,13] and amorphous phase composition [14] of titanium dioxide.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Carlucci

Scremin

Sibillano³

et al. 2014

Inorganics

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An efficient microwave-assisted synthesis of TiO 2 :(B) nanorods, using titanium tetraisopropoxide (TTIP), benzyl alcohol as the solvent, together with boric acid and oleic acid as the additive reagents, has been developed. Chemical modification of TTIP by oleic acid was demonstrated as a rational strategy to tune the shape of TiO 2 nanocrystals toward nanorod formation. The differently-shaped TiO 2 :(B) nanocrystals were characterized in detail by transmission electron microscopy (TEM), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and nitrogen absorption-desorption. Oleic acid coordinated on the nanocrystal surface was removed by the reduction of its carboxyl group, and the photocatalytic activity of bare TiO 2 nanocrystals, under visible light irradiation, was also evaluated. The synthesized TiO 2 anatase nanorods exhibited a good photoactivity and completely degraded Rhodamine B solution within three hours.

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“…This effect has been previously reported for similar catalysts and 19 it has been attributed to the restrained TiO 2 crystal growing due to the existence of 20 large amount of boron [16,17,18]. 21…”

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confidence: 66%

“…The 6 main peak located around 530 eV corresponds to Ti-O bonds with a widening at higher 7 binding energy that has been assigned to hydroxyl groups in the TiO 2 surface. On the 8 other hand, a second contribution to the O 1s spectra is observed in the boron doped 9 catalyst at 532.4 eV corresponding to B-O bonds in H 3 BO 3 or B 2 O 3 [18]. Boron to 10 titanium atomic surface ratio was calculated for all the catalysts from peak areas and 11…”

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confidence: 99%

Boron doped TiO2 catalysts for photocatalytic ozonation of aqueous mixtures of common pesticides: Diuron, o-phenylphenol, MCPA and terbuthylazine

Quiñones

Rey

Álvarez

et al. 2015

Applied Catalysis B: Environmental

118

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Additional Information:• This paper was accepted for publication in the journal Applied Cataly- TiO 2 and B-doped TiO 2 catalysts were synthesized using a sol-gel procedure. The 11 photocatalysts were characterized by ICP-EOS, N 2 adsorption-desorption, XRD, XPS, 12and DR-UV-Vis spectroscopy. Four recalcitrant pesticides (diuron, o-phenylphenol, 2-13 methyl-4-chlorophenoxyacetic acid (MCPA) and terbuthylazine) were subjected to 14 degradation by ozonation, photolytic ozonation, photocatalysis and photocatalytic 15 ozonation using the prepared catalysts under simulated solar irradiation in a laboratory 16 scale system. The B-doped TiO 2 catalysts, with 0.5-0.8 wt.% of interstitial boron, were 17 more active than bare TiO 2 for the removal and mineralization of the target compounds. 18The combination of ozonation and photocatalysis led to faster mineralization rates than 19 the treatment methods considered individually and allowed the complete removal of the 20 pesticides below the regulatory standards. The B-doped catalyst was stable and 21 maintained 75% mineralization after three consecutive runs.

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Preparation and photocatalytic activity of boron-modified TiO2 under UV and visible light

Cited by 226 publications

References 30 publications

Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Boron doped TiO2 catalysts for photocatalytic ozonation of aqueous mixtures of common pesticides: Diuron, o-phenylphenol, MCPA and terbuthylazine

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