Structural, photophysical and photocatalytic properties of new Bi2SbVO7 under visible light irradiation

Luan, Jingfei; Pan, Bingcai; Paz, Yaron; Li, Yongmei; Wu, Xiaoshan; Zou, Zhigang

doi:10.1039/b815260h

Cited by 53 publications

(21 citation statements)

References 69 publications

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“…Recent years have shown extensive work towards developing new visible‐light photocatalysts, many of which are mixed oxides and, in particular, mixed oxides of bismuth, such as BiO(Cl x Br 1‐ x ),124 Bi 2 SbVO 7 ,125 and Bi 2 WO 6 126. For most cases, these materials were tested for the degradation of dyes such as methylene blue and rhodamine B and their activity was evaluated based on decolorization and not on mineralization.…”

Section: Practical Implicationsmentioning

confidence: 99%

Effect of Bed Height on the Performance of a Fixed Mo/HZSM‐5 Bed in Direct Aromatization of Methane

Song

Liu

et al. 2016

Chem Eng & Technol

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The catalyst‐overloading strategy is often employed to extend the catalytic lifetime of fixed catalyst bed reactors in chemical processes. The applicability of this strategy to the Mo/HZSM‐5 catalyst for non‐oxidative methane dehydroaromatization was confirmed for the first time by examining the influence of bed height on the catalytic stability and lifetime aromatic productivity of an integral fixed Mo/HZSM‐5 bed at a defined temperature and different CH4 superficial velocities. Increasing the bed height proved to have a very limited effect on extending either the stable period of aromatics production of the bed or its lifetime aromatics productivity. Simultaneous coke formation over all layers of the bed was also confirmed to be responsible for rapid deactivation of the whole bed, and pyrolysis of the intermediate C2H4 was found to be the dominant route to coke formation.

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Section: Practical Implicationsmentioning

confidence: 99%

Effect of Bed Height on the Performance of a Fixed Mo/HZSM‐5 Bed in Direct Aromatization of Methane

Song

Liu

et al. 2016

Chem Eng & Technol

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“…In order to solve this problem, many scientists look forward to degrading harmful dye effluents from contaminated water with photocatalytic techniques before appropriate disposal, and these scientists have been contributing their various efforts to this career for more than 40 years [3,4,5]. Nowadays, photocatalytic degradation processes have been widely applied as techniques for the destruction of organic pollutants in wastewater and effluents, especially the degradation of dyes [6]. …”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Activity of New Photocatalyst ZnBiSbO4 under Visible Light Irradiation

Luan

Chen

2014

IJMS

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In this paper, ZnBiSbO4 was synthesized by a solid-state reaction method for the first time. The structural and photocatalytic properties of ZnBiSbO4 had been characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, transmission electron microscope and UV-visible spectrometer. ZnBiSbO4 crystallized with a pyrochlore-type structure and a tetragonal crystal system. The band gap of ZnBiSbO4 was estimated to be 2.49 eV. The photocatalytic degradation of indigo carmine was realized under visible light irradiation with ZnBiSbO4 as a catalyst compared with nitrogen-doped TiO2 (N-TiO2) and CdBiYO4. The results showed that ZnBiSbO4 owned higher photocatalytic activity compared with N-TiO2 or CdBiYO4 for the photocatalytic degradation of indigo carmine under visible light irradiation. The reduction of the total organic carbon, the formation of inorganic products, SO42− and NO3−, and the evolution of CO2 revealed the continuous mineralization of indigo carmine during the photocatalytic process. One possible photocatalytic degradation pathway of indigo carmine was obtained. The phytotoxicity of the photocatalytic-treated indigo carmine (IC) wastewater was detected by examining its effect on seed germination and growth.

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“…Zou et al synthetized Bi 2 MNbO 7 (M = Al, Ga, In, Y or Fe) [51,52,53] which was one remarkable representative of the family of A 2 B 2 O 7 compounds with the A 3+ 2 B 4+ 2 O 7 pyrochlore structure by substituting B 4+ sites in A 3+ 2 B 4+ 2 O 7 for M 3+ (M 3+ = Al 3+ , Ga 3+ , In 3+ ) and Nb 5+ . Similarly, previous studies had reported Bi 2 GaVO 7 [54] and Bi 2 SbVO 7 [55] by element doping, which had realized visible-light photocatalytic degradation and H 2 production. Previous works indicated that the Ga 3+ and In 3+ ions could influence the band gap and the electronic structure of the compound photocatalysts, which was expected to cause the different photocatalytic activity [56,57].…”

Section: Introductionmentioning

confidence: 54%

The Structural, Photocatalytic Property Characterization and Enhanced Photocatalytic Activities of Novel Photocatalysts Bi2GaSbO7 and Bi2InSbO7 during Visible Light Irradiation

Luan

Shen

et al. 2016

Materials

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In order to develop original and efficient visible light response photocatalysts for degrading organic pollutants in wastewater, new photocatalysts Bi2GaSbO7 and Bi2InSbO7 were firstly synthesized by a solid-state reaction method and their chemical, physical and structural properties were characterized. Bi2GaSbO7 and Bi2InSbO7 were crystallized with a pyrochlore-type structure and the lattice parameter of Bi2GaSbO7 or Bi2InSbO7 was 10.356497 Å or 10.666031 Å. The band gap of Bi2GaSbO7 or Bi2InSbO7 was estimated to be 2.59 eV or 2.54 eV. Compared with nitrogen doped TiO2, Bi2GaSbO7 and Bi2InSbO7, both showed excellent photocatalytic activities for degrading methylene blue during visible light irradiation due to their narrower band gaps and higher crystallization perfection. Bi2GaSbO7 showed higher catalytic activity compared with Bi2InSbO7. The photocatalytic degradation of methylene blue followed by the first-order reaction kinetics and the first-order rate constant was 0.01470 min−1, 0.00967 min−1 or 0.00259 min−1 with Bi2GaSbO7, Bi2InSbO7 or nitrogen doped TiO2 as a catalyst. The evolution of CO2 and the removal of total organic carbon were successfully measured and these results indicated continuous mineralization of methylene blue during the photocatalytic process. The possible degradation scheme and pathway of methylene blue was also analyzed. Bi2GaSbO7 and Bi2InSbO7 photocatalysts both had great potential to purify textile industry wastewater.

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Structural, photophysical and photocatalytic properties of new Bi2SbVO7 under visible light irradiation

Cited by 53 publications

References 69 publications

Effect of Bed Height on the Performance of a Fixed Mo/HZSM‐5 Bed in Direct Aromatization of Methane

Effect of Bed Height on the Performance of a Fixed Mo/HZSM‐5 Bed in Direct Aromatization of Methane

Synthesis, Characterization and Photocatalytic Activity of New Photocatalyst ZnBiSbO4 under Visible Light Irradiation

The Structural, Photocatalytic Property Characterization and Enhanced Photocatalytic Activities of Novel Photocatalysts Bi2GaSbO7 and Bi2InSbO7 during Visible Light Irradiation

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