Green and eco-friendly synthesis of cobalt-oxide nanoparticle: Characterization and photo-catalytic activity

Bibi, Ismat; Nazar, Nosheen; Iqbal, Munawar; Kamal, Shagufta; Nawaz, Haq; Nouren, Shazia; Safa, Yursa; Jilani, Kashif; Sultan, Misbah; Ata, Sadia; Rehman, Fariha; Abbas, Mazhar

doi:10.1016/j.apt.2017.05.008

Cited by 244 publications

(72 citation statements)

References 77 publications

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“…In general, the catalyst formed is in wellordered form and uniform. Other researchers also studied the surface morphology of Zn-WO 3 prepared by different methods and it has been reported with high grades of aggregation and disorder morphology [36,37,59,60] and similar morphology was reported by Samerjai et al [61] for platinum loaded tungsten films. The SEM images of the Zn-d-WO 3 are shown in figure 3.…”

Section: Characterizationsupporting

confidence: 61%

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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Section: Characterizationsupporting

confidence: 61%

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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“…Before treatment, the death rate of RBC was more than 85% and after treatment, it reduces to <20%, which revealed that up to 75% toxic agents were degraded in wastewater as a result of efficient treatment using ZVI. Hence, it was revealed that the AOP was an efficient method for the treatment of wastewater versus other wastewater methods [80][81][82][83][84][85][86].…”

Section: Treatment Of Textile Effluents At Optimized Conditionsmentioning

confidence: 99%

Facile synthesis of zero valent iron and photocatalytic application for the degradation of dyes

Bhatti

Iram

Iqbal

et al. 2020

Mater. Res. Express

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In the present investigation, Zero valent iron (ZVI) was synthesized using ferrous sulfate and borohydrate in the presence of EDTA and characterized by x-ray Diffraction (XRD), Energydispersive x-ray (EDX) and Scanning electron microscope (SEM) techniques. The prepared ZVI catalytic activity was evaluated by degrading Acid Red 1 (AR1) and Acid Green 25 (AG25) dyes. The process variables such as pH, initial dye concentration, ZVI dose, contact time, hydrogen peroxide (H 2 O 2 ) and temperature were optimized for maximum dye degradation. AG25 removal was 98% at pH 4, ZVI dose 0.2 g l −1 , initial dye concentration 50 mg l −1 , 90 min reaction time and 8 mM H 2 O 2 concentration, whereas pH 2, ZVI dose 0.1 g l −1 , 50 mg l −1 initial dye concentration, 8 mM H 2 O 2 and 90 min were found to be optimum for AR1 maximum degradation of 91.60%. Behnajady-Modirshahla-Ghanbery kinetic model and thermodynamic study revealed the spontaneity and endothermic nature of the process. Results revealed that ZVI has potential to degrade the dyes and could possibly be used for the degradation of dyes in wastewater.

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“…Also, using banana peels, not only could AgNO 3 be reduced to NPs but also banana/AgNPs composite films could be fabricated using a solvent casting method. NPs from other metals have been developed for similar degradation studies, such as CoONPs for Remazol Brilliant Orange 3R (Bibi et al, 2017) or PbNPs for malachite green (Elango & Roopan, 2015), the latter of which also showing antimicrobial effects. Zn(NO 3 ) 2 was reduced to ZnONPs with extracts from different fruits and the solids obtained were tested as catalysts for the photocatalytic degradation of methylene blue under UV light (Nava et al, 2017a), outperforming commercially available ZnO.…”

Section: Nanoparticlesmentioning

confidence: 99%

“…Zn(NO 3 ) 2 was reduced to ZnONPs with extracts from different fruits and the solids obtained were tested as catalysts for the photocatalytic degradation of methylene blue under UV light (Nava et al, 2017a), outperforming commercially available ZnO. NPs from other metals have been developed for similar degradation studies, such as CoONPs for Remazol Brilliant Orange 3R (Bibi et al, 2017) or PbNPs for malachite green (Elango & Roopan, 2015), the latter of which also showing antimicrobial effects.…”

Section: Nanoparticlesmentioning

confidence: 99%

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

Esteban

Ladero

2018

Int J of Food Sci Tech

126

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Summary As the availability of fossil‐based resources declines, there is an impending necessity of finding alternative feedstock able to secure the production of fuels and chemicals. Exploitation of biomass as renewable source of chemicals is an attractive possibility, in particular the one derived from food waste (FW). Every year, large amounts of waste are generated within or at the end of the food supply chain at the consumers use stage and hence its valorisation attracts great attention. FW has proven a valuable feedstock for its exploitation to produce a wide array of intermediates and products with promising applications in industry, owing to their similar performance with respect to established products. These include organic acids and furans (generally used as platform chemicals to further products); polymers like bacterial cellulose, polyhydroxyalkanoates or chitin; biosurfactants; biolubricants; or nanoparticles. This overview covers the latest trends in chemical, enzymatic and biotechnological processes reported in literature on the production of these chemicals and materials, with a focus on the use of FW as raw material.

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Green and eco-friendly synthesis of cobalt-oxide nanoparticle: Characterization and photo-catalytic activity

Cited by 244 publications

References 77 publications

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

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

Facile synthesis of zero valent iron and photocatalytic application for the degradation of dyes

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

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Green and eco-friendly synthesis of cobalt-oxide nanoparticle: Characterization and photo-catalytic activity

Cited by 244 publications

References 77 publications

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

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

Facile synthesis of zero valent iron and photocatalytic application for the degradation of dyes

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

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

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