Effect of successive incorporation of tungstophosphoric acid into on the activity of photocatalysts for the degradation of methylene blue

Ariapad, A.; Zanjanchi, Mohammad Ali

doi:10.1016/j.spmi.2010.12.012

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…By doping with metal ions or inorganic ions, or modified with semiconductors such as polyoxomentalate anions, the bandgap of TiO 2 can be depressed, and thus the modified catalyst can be activated by part of the visible spectrum . Hitherto, polyoxometalate‐TiO 2 (POM‐TiO 2 ) systems have been mostly studied because polyoxometalate has a narrow bandgap and acts as a good electron acceptor in complex systems, which can effectively inhibit the recombination of electrons and holes . In addition, polyoxometalate will be immobilized by chemical bonds in case of dissolving in solution during photolytic experiments.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Feng

Zhu

Wang

et al. 2017

J Chinese Chemical Soc

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A novel photocatalyst, K 6 ZrW 11 O 39 Sn . 12H 2 O (ZrW 11 Sn), was synthesized in our previous study. However, the utilization of ZrW 11 Sn was extremely limited because of its high solubility in water. A novel composite catalyst, ZrW 11 Sn-TiO 2 , was synthesized and characterized in this study. ZrW 11 Sn-TiO 2 is of nanometer-scale and has a structure similar to that of anatase TiO 2 . The forbidden energy zone of ZrW 11 Sn-TiO 2 is less than that of the synthesized pure TiO 2 , while its specific surface area is larger. The photocatalytic activities of ZrW 11 Sn-TiO 2 were evaluated by its degradation of monoazo, disazo, anthraquinone, and three aryl methane dyes with solar irradiation in heterogeneous aqueous solutions. Results indicate that ZrW 11 Sn-TiO 2 has higher photocatalytic activity than the synthesized pure TiO 2 , commercial anatase TiO 2 , H 3 PW 12 O 40 , and H 4 SiW 12 O 40 doped TiO 2 . The optimum doping concentration of ZrW 11 Sn and the calcination temperature were 1.8 wt % (ZrW 11 Sn) and 400 C, respectively. ZrW 11 Sn-TiO 2 showed a considerably high photocatalytic stability. When a Reactive Black 5 solution (200 mL, 10 mg/L; initial pH 6) with ZrW 11 Sn-TiO 2 (0.2 g/L) was irradiated for 60 min with simulated sunlight, the decoloration rate was >98% even after four cycles. ZrW 11 Sn-TiO 2 exhibited a better settling property than commercial TiO 2 , which made further separation treatment easier.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Feng

Zhu

Wang

et al. 2017

J Chinese Chemical Soc

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Biogenic C-doped titania templated by cyanobacteria for visible-light photocatalytic degradation of Rhodamine B

Yan

et al. 2014

Journal of Environmental Sciences

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Extended Quantum Yield: A Dimensionless Factor Including Characteristics of Light Source, Photocatalyst Surface, and Reaction Kinetics in Photocatalytic Systems

Shidpour

Vossoughi

Simchi

et al. 2014

Ind. Eng. Chem. Res.

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Quantum yield relations were extended by adding effective conditional parameters in photodegradation of organic pollutants such as intensity of light, wavelength of light, average distance from light source, concentrations of dye/pollutant and photocatalyst, and volume of reactor. The geometry of light source and thin film and particulate photocatalytic systems were considered in analysis. Extended quantum yield that is a dimensionless factor is applicable in various types of dye and photocatalyst. This extended quantum yield allowed us to classify photodegradation as reported by scientific groups, performed in various operational conditions in order to identify the degree of similarity among these photocatalytic systems.

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Effect of successive incorporation of tungstophosphoric acid into on the activity of photocatalysts for the degradation of methylene blue

Cited by 4 publications

References 29 publications

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Biogenic C-doped titania templated by cyanobacteria for visible-light photocatalytic degradation of Rhodamine B

Extended Quantum Yield: A Dimensionless Factor Including Characteristics of Light Source, Photocatalyst Surface, and Reaction Kinetics in Photocatalytic Systems

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Effect of successive incorporation of tungstophosphoric acid into on the activity of photocatalysts for the degradation of methylene blue

Cited by 4 publications

References 29 publications

Preparation and Characterization of K6ZrW11O39Sn‐TiO2 Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Preparation and Characterization of K6ZrW11O39Sn‐TiO2 Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Biogenic C-doped titania templated by cyanobacteria for visible-light photocatalytic degradation of Rhodamine B

Extended Quantum Yield: A Dimensionless Factor Including Characteristics of Light Source, Photocatalyst Surface, and Reaction Kinetics in Photocatalytic Systems

Contact Info

Product

Resources

About

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions

Preparation and Characterization of K₆ZrW₁₁O₃₉Sn‐TiO₂ Composite Catalyst for Solar Photocatalytic Degradation of Aqueous Dye Solutions