Photocatalytic degradation of organic dyes using WO3-doped ZnO nanoparticles fixed on a glass surface in aqueous solution

Ebrahimi, Roya; Maleki, Afshin; Zandsalimi, Yahya; Ghanbari, Reza; Shahmoradi, Behzad; Rezaee, Reza; Safari, Mahdi; Joo, Sang Woo; Daraei, Hiua; Shivaraju, Harikaranahalli Puttaiah; Giahi, Omid

doi:10.1016/j.jiec.2019.01.041

Cited by 96 publications

(16 citation statements)

References 38 publications

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“…For degradation of various dyes different microbes can be used, they have different mechanisms and pathways for degradation of dyes (Cao et al, 2019;Ebrahimi et al, 2019).…”

Section: Microbial Degradationmentioning

confidence: 99%

Microbial degradation of dyes: An overview

Varjani

Rakholiya

et al. 2020

Bioresource Technology

379

109

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Industrialization increases use of dyes due to its high demand in paper, cosmetic, textile, leather and food industries. This in turn would increase wastewater generation from dye industrial activities. Various dyes and its structural compounds present in dye industrial wastewater have harmful effects on plants, animals and humans. Synthetic dyes are more resistant than natural dyes to physical and chemical methods for remediation which makes them more difficult to get decolorize. Microbial degradation has been researched and reviewed largely for quicker dye degradation. Genetically engineered microorganisms (GEMs) play important role in achieving complete dye degradation. This paper provides scientific and technical information about dyes & dye intermediates and biodegradation of azo dye. It also compiles information about factors affecting dye(s) biodegradation, role of genetically modified organisms (GMOs) in process of dye(s) degradation and perspectives in this field of research.

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“…For degradation of various dyes different microbes can be used, they have different mechanisms and pathways for degradation of dyes (Cao et al, 2019;Ebrahimi et al, 2019).…”

Section: Microbial Degradationmentioning

confidence: 99%

Microbial degradation of dyes: An overview

Varjani

Rakholiya

et al. 2020

Bioresource Technology

379

109

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“…Tungsten oxide-doped zinc oxide nanoparticles Hydrothermal Photocatalyst, degradation of Direct Blue 15 dye [18] Tungsten-trioxide nanowire Hydrothermal Different size of NPs with hexagonal geometry [19] WO 3 NPs Acid catalyzed co-precipitation method.…”

Section: Npsmentioning

confidence: 99%

“…The most treatments done by nanotechnology are tissue regeneration, bone repair, immunity, cancer treatment, diabetes cure and NPs are also active antimicrobial agents [38]. The nanotubes and nano-capsule are concentrated at the tumor part of the body that help in destruction of the tumor cells [18][19][20]24,39]. The main drawback of ZnO as a photocatalyst is the absorption wavelength of material lies in ultra violet region.…”

Section: Npsmentioning

confidence: 99%

Synthesis and characterization of Zn doped WO₃ nanoparticles: photocatalytic, antifungal and antibacterial activities evaluation

Arshad¹,

Ehtisham-ul-Haque

Bilal

et al. 2020

Mater. Res. Express

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In view of enhanced bioactivity and photocatalytic applications, the doped material has gained much attention and present study was focused on the preparation of Zn doped WO 3 (Zn-d-WO 3 ) via precipitation method. The prepared Zn-d-WO 3 was characterized by Scanning Electron Microscopy (SEM), x-ray diffraction (XRD), Energy-dispersive x-ray (EDX). The effect of Zn concentration was studied on antibacterial, antifungal and photocatalytic activities along with structural and morphological variation. The Zn-d-WO 3 was triclinic, spherical and rod shaped and particle size was decreased as the Zn concentration increased. The antimicrobial activity of Zn-d-WO 3 was evaluated against a panel of bacterial strains (Escherichia coli, Pasturellamu ltocida, Bacillus subtilis, Staphylococcus aureus) and fungal strain (Aspergillus niger, Aspergillus flavus, Penicillium notatum). The Zn-d-WO 3 showed promising antibacterial activity with minimum inhibitory concentration (MIC) values in the range of 211-387 (μg ml −1 ), whereas the antifungal activity was less than the standard (Fluconazole), which revealed that the Zn-d-WO 3 are highly active against bacterial strains since activity was comparable with standard drug (Rifampicin). The photocatalytic activity (PCA) was evaluated by degrading methylene blue (MB) dye in an aqueous solution and dye degradation of 78% and 92% was achieved in 120 min under visible and UV irradiation, respectively. Results revealed that the Zn-d-WO 3 could possibly be used as photocatalyst for the degradation of dyes in wastewater.

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“…The results presented in Figure 5 indicate that increasing the light intensity increased the efficiency of the system after 90 min. This is because the increase of the light intensity increases the quantity of light received by the photocatalyst particles, which increases electron stimulation and enhances the system's effectiveness [34]. Figure 6 shows the effect of initial dye concentration on the MB decay using the two prepared photocatalysts.…”

Section: Effect Of the Light Intensity On The Mb Photocatalytic Decaymentioning

confidence: 99%

Effect of the Morphology of Tungsten Oxide Embedded in Sodium Alginate/Polyvinylpyrrolidone Composite Beads on the Photocatalytic Degradation of Methylene Blue Dye Solution

et al. 2020

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Tungsten oxide nanostructures were modified by oxygen vacancies through hydrothermal treatment. Both the crystalline structure and morphological appearance were completely changed. Spherical WO3·H2O was prepared from tungstic acid solution by aging at room temperature, while rod-like WO3·0.33H2O was prepared by hydrothermal treatment of tungstic acid solution at 120 °C. These structures embedded in sodium alginate (SA)/polyvinylpyrrolidone (PVP) were synthesized as novel porous beads by gelation method into calcium chloride solution. The performance of the prepared materials as photocatalysts is examined for methylene blue (MB) degradation in aqueous solutions. Different operation parameters affecting the dye degradation process, such as light intensity, illumination time, and photocatalyst dosage are investigated. Results revealed that the photocatalytic activity of novel nanocomposite changed with the change in WO3 morphology. Namely, the beads with rod nanostructure of WO3 have shown better effectiveness in MB removal than the beads containing WO3 in spherical form. The maximum degradation efficiency was found to be 98% for WO3 nanorods structure embedded beads, while the maximum removal of WO3 nanospheres structure embedded beads was 91%. The cycling-ability and reuse results recommend both prepared structures to be used as effective tools for treating MB dye-contaminated wastewaters. The results show that the novel SA/PVP/WO3 nanocomposite beads are eco-friendly nanocomposite materials that can be applied as photocatalysts for the degradation of cationic dyes in contaminated water.

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Photocatalytic degradation of organic dyes using WO3-doped ZnO nanoparticles fixed on a glass surface in aqueous solution

Cited by 96 publications

References 38 publications

Microbial degradation of dyes: An overview

Microbial degradation of dyes: An overview

Synthesis and characterization of Zn doped WO₃ nanoparticles: photocatalytic, antifungal and antibacterial activities evaluation

Effect of the Morphology of Tungsten Oxide Embedded in Sodium Alginate/Polyvinylpyrrolidone Composite Beads on the Photocatalytic Degradation of Methylene Blue Dye Solution

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Photocatalytic degradation of organic dyes using WO3-doped ZnO nanoparticles fixed on a glass surface in aqueous solution

Cited by 96 publications

References 38 publications

Microbial degradation of dyes: An overview

Microbial degradation of dyes: An overview

Synthesis and characterization of Zn doped WO3 nanoparticles: photocatalytic, antifungal and antibacterial activities evaluation

Effect of the Morphology of Tungsten Oxide Embedded in Sodium Alginate/Polyvinylpyrrolidone Composite Beads on the Photocatalytic Degradation of Methylene Blue Dye Solution

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Synthesis and characterization of Zn doped WO₃ nanoparticles: photocatalytic, antifungal and antibacterial activities evaluation