A novel photocatalyst BiSbO4 for degradation of methylene blue

Lin, Xin; Huang, Fu Qiang; Wang, Wen D.; Zhang, Ke L.

doi:10.1016/j.apcata.2006.03.057

Cited by 88 publications

(41 citation statements)

References 33 publications

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“…2,3 Among them BiSbO 4 is one of the most promising compounds. 4 The crystal structure of BiSbO 4 at ambient pressure has been accurately determined, 5 but only few of its Raman-active modes have been measured 6 and its infrared (IR)-active modes are not known yet. On the other hand, attempts have been made to determine the electronic band gap, but values ranging from 2.1 to 3.5 eV can be found in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…16,17 Usually these calculations provide an accurate description of such oxides as well as a better understanding of the experimental results and accurate predictions. Based upon the facts described above we consider timely to perform and experimental and theoretical study of BiSbO 4 to deepen the knowledge on its properties and its behavior under compression. HP x-ray diffraction (XRD), Raman and infrared (IR) spectroscopy, and diffusereflectance experiments were carried out.…”

Section: Introductionmentioning

confidence: 99%

“…HP x-ray diffraction (XRD), Raman and infrared (IR) spectroscopy, and diffusereflectance experiments were carried out. The combination of calculations and experiments have allowed us to systematically study the structural, lattice-dynamics, and electronic properties of BiSbO 4 , making a substantial progress in their understanding.…”

Section: Introductionmentioning

confidence: 99%

“…15 However, to the best our knowledge, an investigation of BiSbO 4 under pressure is still lacking in literature. On top of that, ab initio simulations have shown to be an accurate method to study the physical and chemical properties of compounds related to BiSbO 4 . 16,17 Usually these calculations provide an accurate description of such oxides as well as a better understanding of the experimental results and accurate predictions.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, attempts have been made to determine the electronic band gap, but values ranging from 2.1 to 3.5 eV can be found in the literature. 1,4,7,8 During the last decade, intensive investigations have been carried out on the structural evolution of MTO 4 -type ternary oxides under high-pressure (HP). They showed that compression is an efficient tool to improve the understanding of the main physical properties of vanadates, 9 phosphates, 10 chromates, 11 tungstates, 12 molydbates, 13 arsenates, 14 and many other MTO 4 compounds.…”

Section: Introductionmentioning

confidence: 99%

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High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

et al. 2016

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The high-pressure crystal structure, lattice-vibrations, and electronic band structure of BiSbO 4 were studied by ab initio simulations. We also performed Raman spectroscopy, infrared spectroscopy, and diffuse-reflectance measurements, as well as synchrotron powder x-ray diffraction. High-pressure x-ray diffraction measurements show that the crystal structure of BiSbO 4 remains stable up to at least 70 GPa, unlike other known MTO 4 -type ternary oxides. These experiments also give information on the pressure dependence of the unit-cell parameters. Calculations properly describe the crystal structure of BiSbO 4 and the changes induced by pressure on it. They also predict a possible high-pressure phase. A roomtemperature pressure-volume equation of state is determined and the effect of pressure on the coordination polyhedron of Bi and Sb is discussed. Raman-and infrared-active phonons have been measured and calculated. In particular, calculations provide assignments for all the vibrational modes as well as their pressure dependence. In addition, the band structure and electronic density of states under pressure were also calculated. The calculations combined with the optical measurements allow us to conclude that BiSbO 4 is an indirect-gap semiconductor, with an electronic band gap of 2.9(1) eV. Finally, the isothermal compressibility tensor for BiSbO 4 is given at 1.8 GPa. The experimental (theoretical) data revealed that the direction of maximum compressibility is in the (0 1 0) plane at approximately 33º (38º) to the c-axis and 47º (42º) to the a-axis. The reliability of the reported results is supported by the consistency between experiments and calculations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

et al. 2016

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Harnessing solar power for enhanced photocatalytic degradation of coloured pollutants using novel Mg‐doped‐ZnFe₂O₄/S@g‐C₃N₄ heterojunction: A facile hydrothermal synthesis approach

Rubab,

Mansoor,

Javed

et al. 2024

Luminescence

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The ability of heterogeneous photocatalysis to effectively remove organic pollutants from wastewater has shown great promise as a tool for environmental remediation. Pure zinc ferrites (ZnFe2O4) and magnesium‐doped zinc ferrites (Mg@ZnFe2O4) with variable percentages of Mg (0.5, 1, 3, 5, 7, and 9 mol%) were synthesized via hydrothermal route and their photocatalytic activity was checked against methylene blue (MB) taken as a model dye. FTIR, XPS, BET, PL, XRD, TEM, and UV‐Vis spectroscopy were used for the identification and morphological characterization of the prepared nanoparticles (NPs) and nanocomposites (NCs). The 7% Mg@ZnFe2O4 NPs demonstrated excellent degradation against MB under sunlight. The 7% Mg@ZnFe2O4 NPs were integrated with diverse contents (10, 50, 30, and 70 wt.%) of S@g‐C3N4 to develop NCs with better activity. When the NCs were tested to degrade MB dye, it was revealed that the 7%Mg@ZnFe2O4/S@g‐C3N4 NCs were more effective at utilizing solar energy than the other NPs and NCs. The synergistic effect of the interface formed between Mg@ZnFe2O4 and S@g‐C3N4 was primarily responsible for the boosted photocatalytic capability of the NCs. The fabricated NCs may function as an effective new photocatalyst to remove organic dyes from wastewater.

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Sm³⁺‐Doped Bi₂O₃ Photocatalyst Prepared by Hydrothermal Synthesis

et al. 2009

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Bi2O3 and Sm3+‐doped Bi2O3 visible‐light‐active photocatalysts with different Sm3+ loadings (0.5, 1.0, and 2.0 wt %) were synthesized by a hydrothermal method. The structural properties of the prepared catalysts were studied by X‐ray diffraction (XRD), BET surface area, UV/Vis diffuse reflectance (DRS), FTIR, and X‐ray photoelectron (XPS) spectroscopic techniques. The XRD spectra of the Sm‐doped Bi2O3 catalysts calcined at 550 °C show only the characteristic peaks of Bi2O3. A high red shift in the range 450–600 nm was detected in the DRS band, leading to a large decrease in the band‐gap energy from 2.82 to 2.0 eV. This red shift increased with increasing Sm content. XPS results revealed that Sm interacted with Bi2O3, wherein both Bi and Sm were in the +3 oxidation state. The photocatalytic activities of the catalysts were evaluated for the degradation of methylene blue and phenol under solar irradiation. Of all of the catalysts prepared, the Sm3+‐doped Bi2O3 with a Sm loading of 1 wt % gave the best photocatalytic activity.

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A novel photocatalyst BiSbO4 for degradation of methylene blue

Cited by 88 publications

References 33 publications

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

Harnessing solar power for enhanced photocatalytic degradation of coloured pollutants using novel Mg‐doped‐ZnFe₂O₄/S@g‐C₃N₄ heterojunction: A facile hydrothermal synthesis approach

Sm³⁺‐Doped Bi₂O₃ Photocatalyst Prepared by Hydrothermal Synthesis

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A novel photocatalyst BiSbO4 for degradation of methylene blue

Cited by 88 publications

References 33 publications

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO4

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO4

Harnessing solar power for enhanced photocatalytic degradation of coloured pollutants using novel Mg‐doped‐ZnFe2O4/S@g‐C3N4 heterojunction: A facile hydrothermal synthesis approach

Sm3+‐Doped Bi2O3 Photocatalyst Prepared by Hydrothermal Synthesis

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Product

Resources

About

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

High-Pressure Crystal Structure, Lattice Vibrations, and Band Structure of BiSbO₄

Harnessing solar power for enhanced photocatalytic degradation of coloured pollutants using novel Mg‐doped‐ZnFe₂O₄/S@g‐C₃N₄ heterojunction: A facile hydrothermal synthesis approach

Sm³⁺‐Doped Bi₂O₃ Photocatalyst Prepared by Hydrothermal Synthesis