Visible-light assisted CdO nanowires photocatalyst for toxic dye degradation studies

Rane, Y.N.; Shende, D.A.; Raghuwanshi, Mohit; Koli, R.R.; Gosavi, S. R.; Deshpande, Nishad G.

doi:10.1016/j.ijleo.2018.10.215

Cited by 40 publications

(5 citation statements)

References 52 publications

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“…According to the calculations, CuSe-H has the lowest band gap energy of 2.11 eV, followed by the Cu 2 O sample with a value of 2.25 eV, and finally CuSe-A with a higher value of 2.67 eV. Through this analysis, it is determined that although all of the samples can work under solar irradiation, the lower band gap of CuSe-H provides an advantage due to the lower energy needed to generate the electron–hole pair. − …”

Section: Resultsmentioning

confidence: 95%

Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

et al. 2020

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In this work, copper selenide (Cu 3 Se 2 umangite phase) was synthesized by two routes, using a chemical reaction and the hydrothermal method to obtain CuSe-A and CuSe-H, respectively. The synthesis of Cu 3 Se 2 consisted of a three-step process: in the first step, copper(I) oxide hexapods (Cu 2 O) were obtained as the copper reservoir; in the second step, selenium ions were obtained from the reduction of selenium powder; and in the third step involves mixing two precursors following the two synthesis routes mentioned before. Analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed the formation of the Cu 3 Se 2 phase by both synthesis routes. On the other hand, using the scanning electron microscopy (SEM) technique, it is observed that the Cu 3 Se 2 sample (CuSe-A) is obtained by exchanging in solution with agitation and that the copper selenium phase grows only on the surface of the hexapods. Meanwhile, the hydrothermal route promotes a total conversion of copper(I) oxide hexapods to the copper selenide phase (CuSe-H). The resulting materials were tested as photocatalytic materials to remove methylene blue dye in water under sunlight irradiation. Cu 3 Se 2 (CuSe-H) obtained by the hydrothermal route exhibited a higher efficiency of photodegradation of dye, reaching a removal percentage of 92% after 4 h under sunlight.

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Section: Resultsmentioning

confidence: 95%

Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

et al. 2020

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“…Thus, the proper fabrication of ZrO 2 -based heterojunction can promote its visiblelight ability. On the other hand, cadmium oxide (CdO) is recognized as an n-type semiconductor with magnificent photoactivity for several applications due to its tuned E g (1.98-2.5 eV) [32,33]. The fabricated heterojunction with CdO support revealed an enhancement in photocharge separation in several previous reports [3,34].…”

Section: Introductionmentioning

confidence: 92%

CdO-supported ZrO₂ heterojunctions: facile synthesis and rapid visible-light oxidation of atrazine herbicide with superb recyclability

Basaleh¹,

Shawky²,

Mahmoud³

2022

Nanotechnology

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The advancement in ceramic oxide-based photocatalysis has got much attention recently for environmental issues. Atrazine (AZ) is one of the major used herbicides in agricultural and related industries. This work familiarizes a polymeric-assisted sol-gel preparation of high surface area zirconium oxide (ZrO2) supported with cadmium oxide nanoparticles at minor content (0.5−2.0 wt.%). Exploration of the synthesized heterostructures revealed the enhancement of visible-light absorbance and reduction of bandgap energy to 2.76 eV keeping the same crystalline form and high surface area of 170 m2g‒1. The prepared photocatalysts were used to degrade AZ in water at a concentration of 231.8 µM (50 ppm). The 1.5%-introduced CdO to ZrO2 revealed the best-performed photocatalyst for complete oxidation of AZ within 40 at an optimized dose of 1.6 g L–1. This novel ceramic photocatalyst showed a chemical and structural ability to keep 98.5% of its initial efficiency after five regenerated cycles. The construction of p-n heterojunction between the p-type ZrO2 and the n-type CdO contributed to the comprehensive photocatalytic competence toward the efficient charge separation and photooxidation process.

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“…The photocatalytic activity of CdO nanomaterials using methyl red dye as an organic contaminate has been studied, and they are often exposed to water sources in the textile industry. The results showed that nanoparticles of CdO are very efficient as a photocatalyst for the degradation of Congo red dye solution [41]. Cadmium oxide NPs were chosen due to their chemical stability, low cost, and widespread availability [42].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Antimicrobial of MnO and CdO Nanoparticles by Using a Calcination Method

et al. 2022

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Nano-sized manganese oxide and cadmium oxide were formed quantitatively via chemical routes, using calcination from an aqueous solution containing metal chloride as a precursor, to create polyvinyl alcohol and para-aminobenzoic acid complexes with the following formulae: [Mn (PVA)(P-ABA) (H2O)3] H2O and [Cd (PVA)(P-ABA) (H2O)3]. The synthesized complexes and metal oxide nanoparticles were characterized using elemental analysis, thermal analyses (TGA and DTA), FT-IR spectroscopy, XRD analysis, UV-vis spectra, and SEM and TEM electron microscopes. The kinetic and thermodynamic parameters (∆H*, ∆G* and ∆S*) for the Mn(II) and Cd(II) coordination compounds were calculated. The antimicrobial properties of the samples were assessed using five bacterial strains and three fungal strains. Three strains of (G+) bacteria, two strains of (G−) bacteria, one stain of yeast-like fungi, and two molds were used in this study.

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Visible-light assisted CdO nanowires photocatalyst for toxic dye degradation studies

Cited by 40 publications

References 52 publications

Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

CdO-supported ZrO₂ heterojunctions: facile synthesis and rapid visible-light oxidation of atrazine herbicide with superb recyclability

Synthesis, Characterization, and Antimicrobial of MnO and CdO Nanoparticles by Using a Calcination Method

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Visible-light assisted CdO nanowires photocatalyst for toxic dye degradation studies

Cited by 40 publications

References 52 publications

Transformation of Nanostructures Cu2O to Cu3Se2 through Different Routes and the Effect on Photocatalytic Properties

Transformation of Nanostructures Cu2O to Cu3Se2 through Different Routes and the Effect on Photocatalytic Properties

CdO-supported ZrO2 heterojunctions: facile synthesis and rapid visible-light oxidation of atrazine herbicide with superb recyclability

Synthesis, Characterization, and Antimicrobial of MnO and CdO Nanoparticles by Using a Calcination Method

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Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

Transformation of Nanostructures Cu₂O to Cu₃Se₂ through Different Routes and the Effect on Photocatalytic Properties

CdO-supported ZrO₂ heterojunctions: facile synthesis and rapid visible-light oxidation of atrazine herbicide with superb recyclability