Potential of cobalt and cobalt oxide nanoparticles as nanocatalyst towards dyes degradation in wastewater

Adekunle, Abolanle S.; Oyekunle, John Adekunle Oyedele; Durosinmi, L. M.; Oluwafemi, Oluwatobi S.; Olayanju, Dare; Akinola, A. S; Obisesan, Olaoluwa Ruth; Akinyele, Olawale Folorunso; Ajayeoba, Temitope Adekunle

doi:10.1016/j.nanoso.2019.100405

Cited by 97 publications

(18 citation statements)

References 47 publications

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“…Amongst the various nanostructured heterogeneous photocatalyst, the exceptional ones are metal oxide and metal chalcogenide nanostructures which are broadly exploited for the almost complete degradation and reduction of hazardous dyes and other organic pollutants (Adekunle et al 2020;Fahad et al 2020;Mal et al 2020;Memon et al 2020;Pato et al 2020a;Singh et al 2020a, c). While looking at the brilliant properties of metal oxide nanostructure, the most prominent one is copper oxide (CuO) (Buledi et al 2020b;Chang et al 2011;Sidra et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous kinetics of CuO nanoflakes in simultaneous decolorization of Eosin Y and Rhodamine B in aqueous media

et al. 2021

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This study describes the heterogeneous photocatalysis of CuO nanoflakes for the effective degradation of hazardous dyes. The successful synthesis of CuO nanoflakes was carried out by exploiting aqueous chemical growth method. The synthesized material was characterized by versatile analytical tools including XRD, FE-SEM, EDX, AFM, ZP and FT-IR. The engineered CuO reveals nanoflakes texture having average size of 18.3 nm and (− 36.5 ± 3 mV) surface charge with excellent phase purity and crystalline nature. The catalytic kinetics exposed that CuO nanocatalyst exhibits an exceptional degradation over 97% for Eosin Y (EY) and Rhodamine B (RB) dyes in the aqueous medium using minimum catalyst dose of 120 and 140 μg individually and simultaneously, within 3 min of time period under sunlight. Due to ultrafine processing, cost-effective synthetic outline, supreme reduction percentage in short time and intense recyclability with an insignificant decrease in degradation abilities, the proposed nanocatalyst is extremely useful. Consequentially, the nanocatalyst presented here is more useful and realistic, hence can be suggested as an effective candidate for the successful degradation of complex dyes at the commercial level.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous kinetics of CuO nanoflakes in simultaneous decolorization of Eosin Y and Rhodamine B in aqueous media

et al. 2021

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“…Spherical-shaped nanoparticles sized 32.66 mm were obtained. In this chemical solution precipitation method, known concentrations of the precursors were allowed to react in the solution, after which the precipitate formed is then washed and dried [ 36 ]. The chemical solution precipitation method is of advantage because it is favorable for the large-scale production of materials; however, the particle morphology is not well defined, and it is not a very rapid technique.…”

Section: Synthesismentioning

confidence: 99%

Recent Trends and Advances of Co3O4 Nanoparticles in Environmental Remediation of Bacteria in Wastewater

2022

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Antibiotic resistance is a formidable global threat. Wastewater is a contributing factor to the prevalence of antibiotic-resistant bacteria and genes in the environment. There is increased interest evident from research trends in exploring nanoparticles for the remediation of antibiotic-resistant bacteria. Cobalt oxide (Co3O4) nanoparticles have various technological, biomedical, and environmental applications. Beyond the environmental remediation applications of degradation or adsorption of dyes and organic pollutants, there is emerging research interest in the environmental remediation potential of Co3O4 nanoparticles and its nanocomposites on antibiotic-resistant and/or pathogenic bacteria. This review focuses on the recent trends and advances in remediation using Co3O4 nanoparticles and its nanocomposites on antibiotic-resistant or pathogenic bacteria from wastewater. Additionally, challenges and future directions that need to be addressed are discussed.

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“…It is further observed that synthetic CoONPs exhibit excellent degradation efficiency towards MX compared to TY. We have made a comparison of reactivity among the degradation efficiency of CoONPs photocatalysts towards different dyes and catalysts (Table 1) [40][41][42][43][44][45] . The present CoONPs shows an excellent efficiency compared to the other CoONPs.…”

Section: Photocatalytic Degradation Study Of Murexide and Titan Yellomentioning

confidence: 99%

Visible Light Induced Photocatalytic Dye Degradation by Cobalt Oxide Nanoparticles

Chowdhury¹,

Pradhan²,

Das³

et al. 2020

Fine Chemical Engineering

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Considering the impact of organic dyes as industrial effluents on the environment, this research study describes the synthesis, structural and morphological characterization, and visible light induced photo-catalytic studies of cobalt oxide nanoparticles (CoONPs). In order to synthesize the CoONPs, a tetra-nuclear cobalt(III)-Schiff base complex was prepared in crystalline phase and employed to produce CoONPs through thermal decomposition of the synthetic precursor. The morphology of the nanoparticle has been delineated with different spectroscopic and analytic methods. Scanning and transmission electron microscopy (FE-SEM and HR-TEM) analyses estimate the cauliflower structured CoONPs with an average size ~80 nm. The photo-catalytic behavior of CoONPs has been tested against murexide and titan yellow dye in aqueous phase. This CoONPs ensure more than 90% of degradation for murexide while ~60% degradation has been observed for titan yellow (TY) in aqueous phase for a same time interval. MX and TY adopt different structures which bring the variation in rate of photosensitization for the synthetic CoONPs photocatalyst and account on the different photocatalytic efficiency towards the degradation of MX and TY in presence of visible light.

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Potential of cobalt and cobalt oxide nanoparticles as nanocatalyst towards dyes degradation in wastewater

Cited by 97 publications

References 47 publications

Heterogeneous kinetics of CuO nanoflakes in simultaneous decolorization of Eosin Y and Rhodamine B in aqueous media

Heterogeneous kinetics of CuO nanoflakes in simultaneous decolorization of Eosin Y and Rhodamine B in aqueous media

Recent Trends and Advances of Co3O4 Nanoparticles in Environmental Remediation of Bacteria in Wastewater

Visible Light Induced Photocatalytic Dye Degradation by Cobalt Oxide Nanoparticles

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