Doping of Co into V2O5 nanoparticles enhances photodegradation of methylene blue

Suresh, R.; Giribabu, K.; Manigandan, R.; Munusamy, S.; Kumar, S. Praveen; Muthamizh, S.; Stephen, A.; Narayanan, Vijaykrishnan

doi:10.1016/j.jallcom.2014.02.041

Cited by 104 publications

(27 citation statements)

References 49 publications

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“…V 2 O 5 is one such metal oxide catalyst. It has a band energy gap of 2.47 eV and greater electron hole recombination when irradiated, thus demanding doping with transition metals and photocatalysts . Graphene, having high adsorption capacity, conductivity and photo‐conversion efficiency, serves as an ideal catalyst .…”

Section: Introductionmentioning

confidence: 99%

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Mohan

Selvaraj²,

Shanthi³

et al. 2018

Env Prog and Sustain Energy

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The increasing prevalence of antibiotics in the environment has promoted the development of antibiotic resistant microorganisms, and novel approaches are needed to effectively remove antibiotics from water and mitigate this worldwide problem. A reduced graphene oxide‐V2O5 (RGOV) nanocomposite was synthesized and used for photocatalytic degradation of the antibiotic oxytetracycline (OTC) in aqueous solution. The Sol–Gel method was employed for V2O5 synthesis from e‐waste‐based vanadium nitrate, and a one pot solvothermal method was used to synthesize RGOV. Fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM) with energy dispersive analysis of X‐rays (EDAX) confirmed V‐O‐C bonds on the surface of the RGOV nanocomposites. A decrease in the band gap of V2O5 from 2.21 to 2.13 eV was supported by diffuse reflectance ultraviolet–visible spectrophotometry. OTC adsorption onto the nanocomposite increased with an increase in RGO concentration and saturated at 17% for RGOV with 30% graphene oxide. The composite degraded 90% of the OTC present in aqueous solution (50 mg/L). Platinum (1%) doping further increased OTC degradation by the nanocomposite to 98.7%. Optimum conditions for maximum OTC degradation are (1) an initial OTC concentration of 50 mg/L, (2) a RGOV nanocomposite dose of 0.5 g/L, and (3) a 40 min incubation time. Our results support the potential use of RGOV nanocomposite for OTC photodegradation. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13123, 2019

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Section: Introductionmentioning

confidence: 99%

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Mohan

Selvaraj²,

Shanthi³

et al. 2018

Env Prog and Sustain Energy

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“…This issue is being investigated by either doping V 2 O 5 with a metal ion or coupling V 2 O 5 with a semiconductor. V 2 O 5 nanoparticles (NPs) have been doped with different amounts of cobalt using a thermal decomposition method to enhance the photodegradation . Mn‐doped V 2 O 5 enhances the photocatalytic activity of V 2 O 5 powders through trapping the photogenerated electrons by the Mn ions and also due to the existence of V 5+ /V 4+ redox couples from the resulting Mn(VO 3 ) 2 phase .…”

Section: Introductionmentioning

confidence: 99%

Wide‐bandgap HfO₂‐V₂O₅ nanowires heterostructure for visible light‐driven photocatalytic degradation

Sari

Ting

2019

J Am Ceram Soc

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A novel HfO2/V2O5 nanocomposite has been fabricated for use as photocatalyst. HfO2 nanoparticles (NPs) were deposited on V2O5 using a precipitation method. Both commercial V2O5 particles and microwave‐assisted hydrothermal (MAH)‐synthesized V2O5 nanowires (NWs) were used. We demonstrate that the HfO2/V2O5 nanocomposite exhibits better photodegradation efficiency than the V2O5. The photodegradation reaction constant of the HfO2/V2O5 nanocomposite is more than 66% higher than that of the V2O5. The wide‐bandgap, transparent HfO2 effectively reduces the electron‐hole recombination by proving defect levels to quench the recombination. A plausible band structure is proposed to support the existence of these defect levels.

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“…Photocatalytic degradation of the pollutants in wastewater entailed a chain of advantages including conserving energy and little secondary pollution; it had therefore gradually attracted more and more attention in textile wastewater treatment. Metal oxides [13,14,15,16,17,18,19,20,21,22,23,24] and metal sulfides [21,22,23,24,25,26,27,28,29,30,31,32,33] were the most common semiconductor photocatalysts. Among metal oxides, anatase TiO 2 was investigated most repeatedly owing to its non-toxic property, excellent stability and low cost.…”

Section: Introductionmentioning

confidence: 99%

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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Doping of Co into V2O5 nanoparticles enhances photodegradation of methylene blue

Cited by 104 publications

References 49 publications

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Wide‐bandgap HfO₂‐V₂O₅ nanowires heterostructure for visible light‐driven photocatalytic degradation

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

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Doping of Co into V2O5 nanoparticles enhances photodegradation of methylene blue

Cited by 104 publications

References 49 publications

E‐Waste Based V2O5/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V2O5/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Wide‐bandgap HfO2‐V2O5 nanowires heterostructure for visible light‐driven photocatalytic degradation

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

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Product

Resources

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E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Wide‐bandgap HfO₂‐V₂O₅ nanowires heterostructure for visible light‐driven photocatalytic degradation