Removal of naphthalene from simulated wastewater through adsorption-photodegradation by ZnO/Ag/GO nanocomposite

Mukwevho, Nthambeleni; Gusain, Rashi; Fosso‐Kankeu, Elvis; Kumar, Neeraj; Waanders, F.B.; Ray, Suprakas Sinha

doi:10.1016/j.jiec.2019.09.030

Cited by 105 publications

(31 citation statements)

References 71 publications

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“…The degradation efficiency of the studied samples against naphthalene is depicted in Figure 7 a. In this figure, UV-visible investigation showed the main characteristic transition peaks of naphthalene, which was appeared at 275 nm [ 29 , 58 ]. After that, the prepared mixed solutions after adding the tested samples were irradiated, followed by studying the changes of the naphthalene spectra.…”

Section: Resultsmentioning

confidence: 99%

“…In the previous work, the degradation efficiency resulted from Ag NPs and their decoration of CNTs against naphthalene showed that: In 2020, E. Fosso-Kankeu et al succeeded in synthesis ZnO/Ag/GO nanocomposites by chemical method and degradation efficiency against naphthalene was studied, which was reached up to about 90% in less than an hour [ 29 ]. Also, S. Nasreen et al prepared Ag NPs and Cu NPs via biological method by using different types of plants and reached efficiency more than 98% for degradation efficiency against naphthalene [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Ag Nanoparticles-Decorated CNTs via Laser Ablation Method for the Enhancement the Photocatalytic Removal of Naphthalene from Water

et al. 2021

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Silver nanoparticles (Ag NPs) were decorated with different amounts on the exterior walls of carbon nanotubes (CNTs) by a laser ablation assisted method, especially in liquid media to be applied as a good adsorption material against naphthalene. The laser ablation time was controlled the amount of decoration Ag NPs on CNTs. The prepared nanocomposite was analyzed via different analytical techniques. Ag NPs with a small size distribution of 29 nm are uniformly decorated with spherical shape on CNTs walls. The disorder degree of tubular structure and shifting of the vibrational characteristic peaks increase with the increase in the decoration of Ag NPs. After that, the prepared samples were investigated for the removal of naphthalene. These studies of loading Ag NPs with different amounts on the surface of CNTs act as a promising material for water treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag Nanoparticles-Decorated CNTs via Laser Ablation Method for the Enhancement the Photocatalytic Removal of Naphthalene from Water

et al. 2021

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“…In recent decades, environmental pollution has been receiving a great deal of public attention. Especially, the toxic organic compound in wastewater can affect directly to human health through water environment, thus some feasible solutions were developed to solve these problems such as photocatalysis [1][2][3][4], adsorption [5], adsorption -photocatalysis [6], photoelectrical oxidation [7], etc. Along with the development of hybrid semiconductor photocatalyst, titanium dioxide (TiO2) as semiconductor has been studied as a base material to combine with other materials to improve its defects like small surface area, low adsorption of toxic organic compound and phase stability at high calcined temperature [8].…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic degradation performance of bisphenol A over TiO<sub>2</sub>-SiO<sub>2</sub> photocatalyst by improving specific surface area under simulation natural light

Le¹,

Huu²,

Kieu³

et al. 2020

Vietnam j. catal. adsorp.

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The application of natural light in photocatalytic process is a potential energy source. In this study, TiO2-SiO2 nanoparticles with outstandingly enhanced photocatalytic activity have been fabricated by sol-gel method. The prepared photocatalysts with different molar ratio of TiO2:SiO2 as 100:0; 95:5; 85:15 and 75:25 were denoted as TiO2, TS5, TS15 and TS25, respectively. Characterization of these photocatalysts was evaluated using transmission electron microscopy (TEM), X-ray diffraction (XRD), N2 Adsorption and Desorption isotherms method (Brunauer–Emmet–Teller, BET). The specific surface area was improved in TiO2-SiO2 photocatalyst namely 193.9 m2.g-1 (at molar ratio of TiO2:SiO2 of 95:5) compared to 33.6 m2.g-1 of TiO2. The crystallite size was calculated around 5 nm from XRD data and uniform particle size distribution was observed in TEM image. The photocatalytic experiments were performed with bisphenol A (BPA) as model compound of organic pollutant. The effect of various operation parameters such as initial concentration, initial solution pH and photocatalyst dosage has been investigated. The kinetic studies of the photocatalytic degradation BPA over TS5 followed the pseudo-first order (k=1.09×10-2 min-1) and degradation yield to be 82.4% BPA, at pH6.23, initial concentration to be 10 ppm and photocatalyst dosage to be 1.0 g.L-1. The photocatalyst TS5 maintained activity after four cycles and remained 78%. The TiO2-SiO2 composite photocatalyst has shown to be a promising heterogeneous photocatalyst for organic degradation.

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“…The use of metal nanomaterials in the presence NaBH 4 for the chemical reduction and catalytic degradation of dye pollutants is currently gaining traction as a clean and an efficient approach. 12,13 The development of environmentally benign nanomaterial with multi-applications owing to their unique chemical, physical, optical or thermodynamic characteristics is gaining prominence is diverse elds in modern research spanning catalysis, 14 targeted drug delivery, 15 diagnostics, 16 sensing 17 and antimicrobials. Given their high surface to volume ratios, noble metal nanoparticles can enhance the reactions between reactants as catalysts.…”

Section: Introductionmentioning

confidence: 99%

Centella asiatica phenolic extract-mediated bio-fabrication of silver nanoparticles: characterization, reduction of industrially relevant dyes in water and antimicrobial activities against foodborne pathogens

et al. 2019

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Removal of naphthalene from simulated wastewater through adsorption-photodegradation by ZnO/Ag/GO nanocomposite

Cited by 105 publications

References 71 publications

Synthesis of Ag Nanoparticles-Decorated CNTs via Laser Ablation Method for the Enhancement the Photocatalytic Removal of Naphthalene from Water

Synthesis of Ag Nanoparticles-Decorated CNTs via Laser Ablation Method for the Enhancement the Photocatalytic Removal of Naphthalene from Water

Enhanced photocatalytic degradation performance of bisphenol A over TiO<sub>2</sub>-SiO<sub>2</sub> photocatalyst by improving specific surface area under simulation natural light

Centella asiatica phenolic extract-mediated bio-fabrication of silver nanoparticles: characterization, reduction of industrially relevant dyes in water and antimicrobial activities against foodborne pathogens

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