Photodegradation of methylene blue with sphere-like ZnO particles prepared via aqueous solution

Akın, Bora; Öner, Mualla

doi:10.1016/j.ceramint.2013.05.024

Cited by 18 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A detailed literature review illustrated the use of different photocatalysts for the degradation of MB. [49][50][51][52][53] Hence, comparison of the photodegradation efficiency of various photocatalysts with the present system was done and is shown in Table 3. Entries in Table 3 clearly demonstrate the superiority of the synthesized spinel ferrites in terms of photocatalytic performance.…”

Section: Contrast Of Synthesized Photocatalysts With Literature Prece...mentioning

confidence: 99%

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Bansal²,

2015

View full text Add to dashboard Cite

Magnetic bimetallic nanospinels (MFe 2 O 4 ; M=Cu, Zn, Ni and Co) of size ranging between 15-30 nm were synthesized by facile and viable sol-gel method. The analysis of Fourier Transform Infrared Spectra of all the samples demonstrated formation of M-O bond in spinel structure. Structural exploration of all the nano materials using Powder X-Ray Diffraction and High Resolution Transmission Electron Microscopy revealed formation of single phase cubic spinel structure. All the materials exhibited magnetic temperament with high surface area (92-151 m 2 /g). Furthermore, band gap calculated from diffuse reflectance spectra was quite narrow (1.26-2.08eV) for all the samples, hence ferrites could act as visible light driven photocatalyst.The prepared nanospinels were proposed to be promising heterogeneous photo-Fenton catalyst under visible light for the degradation of organic pollutants. The catalytic results revealed that rate of reaction was significantly influenced by the cation in the spinel structure as degradation order was observed to be CuFe 2 O 4 (k=0.286 min -1 ) >ZnFe 2 O 4 (k=0.267 min -1 ) > NiFe 2 O 4 (k=0.138 min -1 ) > CoFe 2 O 4 (k=0.078 min -1 ). The reaction conditions were optimized for all the ferrites as the photodegradation was influenced by ferrite dosage (0.25-1.00 g/L), pH (2)(3)(4)(5) and H 2 O 2 concentration (4-27 mM). The experimental data disclosed that activity of ferrite was sensitive to sintering temperature. The materials displayed remarkable stability in the reaction as it could be magnetically separated using external magnet and recycled up to 4 consecutive cycles. There was no significant loss in activity of all the material demonstrating an excellent ability of ferrites to remove organic pollutants from wastewater.

show abstract

Section: Contrast Of Synthesized Photocatalysts With Literature Prece...mentioning

confidence: 99%

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Bansal²,

2015

View full text Add to dashboard Cite

show abstract

“…By eliminating and threatening MB dye pollution, there are numerous ways to solve this problem through sedimentation, oxidation, adsorption, filtration, and photocatalytic degradation [8][9][10][11][12]. Photocatalytic degradation is one of the most effective methods to degrade and remove pollutants because of its low cost and highly reactive technique [13][14][15]. Catalyst concentration, radiation source, time, and pH are all factors that have an impact on photocatalytic degradation [16,17].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Photocatalytic Activity of Ni-Cd/Al2O3 Composite Catalyst

Yusmaniar,

Premono,

Susetyo

et al. 2023

Bull. Chem. React. Eng. Catal.

View full text Add to dashboard Cite

This study was conducted to determine the effect of the radiation source and radiation time on the methylene blue (MB) solution by adding Ni-Cd/Al2O3 to the percent degradation of MB. To investigate similar purposes, the pH of the MB solution varied as well. The preparation, characterization, and photocatalytic activity of Ni-Cd/Al2O3 are three steps in this research. The Ni-Cd was prepared by mixing Ni(NO3)2.6H2O and Cd(NO3)2.4H2O. Various concentrations of Ni-Cd were mixed with Al2O3, then heated, stirred, dried, and calcined to form Ni-Cd/Al2O3 powder. The dried powder catalysts were characterized using Field emission scanning electron microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDS), Brunauer-emmett-teller (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Diffused reflectance spectrometer spectra (DR-UV-Vis). Higher degradation was observed at pH 11, when MB was degraded by 68% and 76% using the 5Ni-2Cd/Al2O3 and 6Ni-1Cd/Al2O3 catalysts, respectively. The 6Ni-1Cd/Al2O3 sample has higher absorption, less surface area, and less band gap; therefore, it has higher performance against degraded MB in the solution. In summary, 6Ni-1Cd/Al2O3 is capable of degrading MB and can be utilized in MB dye waste. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

show abstract

“…Previous studies reported the synthesis of ZnO nanomaterials of different morphologies using colloidal precipitation, hydrothermal method (without template), and template-assisted hydrothermal method for photodegradation of malachite green under both solar and UV light irradiation (Saikia et al, 2015). ZnO particles, nanocapsules, and nano-aggregates have been prepared by various methods such as simple chemical precipitation, facile hydrothermal, and combustion method (Akin & Oner, 2013;Khayyat, Akhtar, & Umar, 2012;Kumar, Kumar, Akhtar, & Umar, 2015). Recently green synthesis has become a popular way to synthesize nanoparticles due to its low cost and environmental compatibility.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

Kaur

Sharma

Kaur

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

Semiconductor oxides of bismuth and zinc have been synthesized using modified sol–gel method and sol‐combustion method, respectively. The synthesized catalysts were characterized by X‐ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), energy‐dispersive X‐ray spectroscopy (EDS), X‐ray photoelectron spectroscopy (XPS), and UV‐vis spectroscopy. The photocatalytic activity of Bi2O3 and ZnO was evaluated for the degradation of Alizarin Red S (ARS), as a model pollutant, at 20 mg/L level in water under visible light irradiation. The percentage of photocatalytic degradation was determined using UV‐vis spectrophotometer. The photocatalytic results revealed that Bi2O3 and ZnO could effectively degrade 73% and 53% of ARS, respectively, within 13 hr under visible light illumination, indicating that synthesized Bi2O3 is a better photocatalyst than ZnO. Photodegradation of ARS with Bi2O3 and ZnO is remarkably influenced by change in pH of the dye solution, and pH 8 was found to be the most favorable for maximum removal of ARS in case of both Bi2O3 (75%) and ZnO (58%) photocatalyst. Practitioner points Photocatalytic degradation of ARS dye depends on pH of the solution. Calcination temperature influences the crystallite size of prepared semiconductor oxides of bismuth and zinc. Bi2O3 shows better photocatalytic degradation efficiency than ZnO under visible light illumination.

show abstract

Photodegradation of methylene blue with sphere-like ZnO particles prepared via aqueous solution

Cited by 18 publications

References 8 publications

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Preparation, Characterization, and Photocatalytic Activity of Ni-Cd/Al2O3 Composite Catalyst

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

Contact Info

Product

Resources

About

Photodegradation of methylene blue with sphere-like ZnO particles prepared via aqueous solution

Cited by 18 publications

References 8 publications

Tailoring the photo-Fenton activity of spinel ferrites (MFe2O4) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Tailoring the photo-Fenton activity of spinel ferrites (MFe2O4) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Preparation, Characterization, and Photocatalytic Activity of Ni-Cd/Al2O3 Composite Catalyst

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

Contact Info

Product

Resources

About

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure

Tailoring the photo-Fenton activity of spinel ferrites (MFe₂O₄) by incorporating different cations (M = Cu, Zn, Ni and Co) in the structure