Influence of Nickel concentration on the photocatalytic dye degradation (methylene blue and reactive red 120) and antibacterial activity of ZnO nanoparticles

Gnanamozhi, P.; Renganathan, Vengudusamy; Chen, Shen‐Ming; Pandiyan, V.; Arockiaraj, M. Antony; Alharbi, Naiyf S.; Kadaikunnan, Shine; Khaled, Jamal M.; Alanzi, Khalid F.

doi:10.1016/j.ceramint.2020.05.054

Cited by 74 publications

(28 citation statements)

References 46 publications

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“…They concluded that protons of the dissociated water molecules interact with the oxygen anions of the ZnO surface, while the hydroxide ions interact with Zn cations. The presence of hydroxyl groups is confirmed by the FT-IR spectroscopy (Gnanamozhi et al 2020). The interaction of H2O molecule with the oxygen-terminated polar surface of ZnO was investigated by Kunat et al (Kunat et al 2003).…”

Section: The Reactions Of the Charge Carriers (The Trapping Process)mentioning

confidence: 95%

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A new approach to study the degradation of the organic pollutants by A-doped MxOy/B photocatalysts

Arabameri

Bashiri

2022

Environ Sci Pollut Res

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This work presents a new approach and a comprehensive mechanism to study the kinetics of the photodegradation of the organic pollutants. The vital role of various operational factors on the degradation of the organic pollutants is explained using this method. The proposed approach is based on the simple strategies and a powerful computational method. Two new variables "the effective concentration of photon" (Ieff) and "the effective concentration of the reactive-centers" (RC) are defined to better understanding the effect of operational parameters on the organic pollutants photodegradation. The optimum conditions of the photocatalytic degradation can be determined with the help of this method. This approach was used to study the kinetics of photodegradation of the organic pollutants on the A − doped M x O y /B photocatalysts. The provided mechanism has been examined with the some experimental data.The high correlations between the experimental data and the fitting results under different conditions prove this mechanism could be reliable.

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Section: The Reactions Of the Charge Carriers (The Trapping Process)mentioning

confidence: 95%

“…These results are in agreement with the experimental findings. The incorporating the nickel into the zinc lattice produces more electron-hole pairs without altering the crystal structure of the ZnO (Gnanamozhi et al 2020).…”

Section: The Effect Of the Modification Of The Photocatalyst On The Degradation Processmentioning

confidence: 99%

A new approach to study the degradation of the organic pollutants by A-doped MxOy/B photocatalysts

Arabameri

Bashiri

2022

Environ Sci Pollut Res

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“…Presumably, the dopants can increase the concentration of oxygen vacancies in the structure which further enhances the bactericidal effect of the photocatalyst [69]. It was reported that transition metal-doped ZnO particles have a synergistic effect on photocatalytic and antibacterial performances [15,47,70]. On the other hand, the EDS mapping showed some spots of Ni in the areas where ZnO film is thinner or cracked.…”

Section: Inactivation Of the Mixture Of M Luteus And S Typhimurium Ba...mentioning

confidence: 99%

Visible-Light-Driven Photocatalytic Inactivation of Bacteria, Bacteriophages, and Their Mixtures Using ZnO-Coated HDPE Beads as Floating Photocatalyst

et al. 2022

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Semiconductor materials used as photocatalysts are considered among the most effective ways to treat biologically polluted water. Certainly, efficiency depends on the selection of photocatalyst and its substrate, as well as the possibility of its application in a broader spectrum of light. In this study, a reactive magnetron sputtering technique was applied for the immobilisation of ZnO photocatalyst on the surface of HDPE beads, which were selected as the buoyant substrates for enhanced photocatalytic performance and easier recovery from the treated water. Moreover, the study compared the effect on the inactivation of the microorganism between ZnO-coated HDPE beads without Ni and with Ni underlayer. Crystal structure, surface morphology, and chemical bonds of as-deposited ZnO films were investigated by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, respectively. Visible-light-induced photocatalytic treatment was performed on the Gram-negative and Gram-positive bacteria and bacteriophages PRD1, T4, and their mixture. Higher bacteria inactivation efficiency was obtained using the ZnO photocatalyst with Ni underlayer for the treatment of S. Typhimurium and M. Luteus mixtures. As for infectivity of bacteriophages, T4 alone and in the mixture with PRD1 were more affected by the produced photocatalyst, compared with PRD1.

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“…The attained slope value was 0.0031, 0.0046, 0.0066, and 0.0995 calculated for pure CoTe, 2.5% Cu/CoTe, 5% Cu/CoTe, and rGO/5% Cu/CoTe, respectively. rGO/5% Cu/CoTe exhibits a greater rate constant value and high degradation efficiency compared to other prepared materials ) and electron (e -), promotes the proficiency of photocatalytic degradation [29].…”

Section: Photocatalytic Propertymentioning

confidence: 99%

Rational design of uniformly embedded Cu/CoTe nanoparticles in freestanding rGO sheets for visible light-induced degradation of toxic dyes

Panneerselvam

Dhanasekaran

Dhanavel

et al. 2021

J Mater Sci: Mater Electron

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The future catalytic conversion technologies using an inexpensive catalyst is beneficial as they influence energy-saving and harvest-boosted photocatalytic performances toward environmentally carcinogenic pollutants removal. Here, we demonstrate a feasible hydrothermal-assisted strategy to engineer a novel low-dimensional ordered nanoarchitecture comprising Cu ion-modulated CoTe nanoalloy grown onto reduced graphene nanosheets (rGO/Cu/CoTe nanocomposites) is established for toxic dye removal applications. They are advancing the excellence of Cu ion-modulated CoTe nanoalloy catalytic sites encapsulated carbon sheets for effective electron/hole transport, thus boosting catalytic reactions. This obtained integral nanoarchitecture may enhance ion/mass transportation by the greatly ordered crystalline structure and ease the formation of reactive species, radicals, and intermediate products. The holey rGO/Cu/CoTe displays enhanced photocatalytic performance toward visiblelight-induced photodegradation of toxic dye Methylene Blue (MB) and Methyl Orange (MO). The 98% and 90.3% degradation efficiencies for MB and MO dyes are observed within 180 min, respectively. Furthermore, the influence of cation modulation on the active catalytic sites could be ascribed by a greatly exposed atom on a lateral surface, consequential from an enormous surface area compared to other chalcogen-based carbon nanocomposites.

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Influence of Nickel concentration on the photocatalytic dye degradation (methylene blue and reactive red 120) and antibacterial activity of ZnO nanoparticles

Cited by 74 publications

References 46 publications

A new approach to study the degradation of the organic pollutants by A-doped MxOy/B photocatalysts

A new approach to study the degradation of the organic pollutants by A-doped MxOy/B photocatalysts

Visible-Light-Driven Photocatalytic Inactivation of Bacteria, Bacteriophages, and Their Mixtures Using ZnO-Coated HDPE Beads as Floating Photocatalyst

Rational design of uniformly embedded Cu/CoTe nanoparticles in freestanding rGO sheets for visible light-induced degradation of toxic dyes

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