Phosphotungstic acid immobilized onto ZnO coated zerovalent iron (Fe@ZnO/PW) core/shell magnetic nanocomposite for enhanced photocatalytic bacterial inactivation under visible light

Khudhair, Entisar M.; Ammar, Saad H.; Khadim, Hussein J.

doi:10.1016/j.jphotochem.2020.112907

Cited by 25 publications

(5 citation statements)

References 26 publications

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“…The N 2 adsorption-desorption isotherms of AgZnO nanoparticles and photocatalytic-adsorbent AgZnO/POMS nanocomposites were determined using the automatic physical/chemical adsorption apparatus. In Figure 8, both samples showed typical type IV isotherms, indicating the presence of mesoporous structures [42]. According to the analysis results of relative position and height of hysteresis loops (Figure 8), the speci c surface area (BET) of AgZnO nanoparticles (Figure 8a) is 28.682 m 2 /g, The BET of AgZnO/POMs nanocomposite (Figure 8b) is 33.535 m 2 /g.…”

Section: Removal Of Bmmentioning

confidence: 91%

Synergistic Photocatalytic-adsorption Removal of Basic Magenta Effect of AgZnO/polyoxometalates Nanocomposite

Tian

Luo

Zhang

et al. 2021

Preprint

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The bifunctional photocatalytic-adsorbent AgZnO/polyoxometalates (AgZnO/POMs) nanocomposites were synthesized by combining AgZnO hybrid nanoparticles and polyoxometalates [Cu(L)2(H2O)]H2[Cu(L)2(P2Mo5O23)]×4H2O (HL = C6H6N2O) into nanostructures via a sonochemical method. Transmission electron microscopy (TEM) indicated that AgZnO/POMs nanocomposites were uniform with narrow particle size distribution and without agglomeration. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis confirmed the nanostructure and composition of AgZnO/POMs nanocomposites. The ultraviolet-visible spectra (UV-vis) and photoluminescence spectra (PL) confirmed excellent optical properties of the AgZnO/POMs nanocomposites. 94.0% of basic magenta (BM) in aqueous solution could be removed using the AgZnO/POMs nanocomposites through adsorption and photocatalysis. The kinetic analysis showed that both the adsorption and photocatalysis process conform to pseudo-second-order kinetics. In addition, the removal efficiency of AgZnO/POMs nanocomposites was found to be almost unchanged after 5 cycles of use. The bifunctional photocatalytic-adsorbent AgZnO/POMs nanocomposites with high stability and cycling performance have broad application prospects in the treatment of refractory organic dye wastewater containing triphenylmethane.

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Section: Removal Of Bmmentioning

confidence: 91%

Synergistic Photocatalytic-adsorption Removal of Basic Magenta Effect of AgZnO/polyoxometalates Nanocomposite

Tian

Luo

Zhang

et al. 2021

Preprint

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“…Although the Ni metal underlayers were used in our case, it is known that transition metal dopants can introduce inter-bands in the photocatalyst structure and enhance the charge separation by suppressing the electron-hole recombination. [67,68]. Due to the thick ZnO film and limited measurement depth, the XPS and XRD analysis methods did not detect Ni underlayer.…”

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

confidence: 98%

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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“…Bisphenol A degradation, 142 FeNi 3 @SiO 2 @TiO 2 nanoparticles were applied to photocatalytic oxidation of the humic acid in aqueous solutions 143 . Psphotungstic acid‐based magnetic nanocomposite was employed for photocatalytic bacterial inactivation of pathogenic E. Coli bacterium 144 . The common idea of the studies mentioned above is the presence of a sustainable porous catalyst provides the required area for a particular reaction.…”

Section: Wastewater Treatmentmentioning

confidence: 99%

“…143 Psphotungstic acidbased magnetic nanocomposite was employed for photocatalytic bacterial inactivation of pathogenic E. Coli bacterium. 144 The common idea of the studies mentioned above is the presence of a sustainable porous catalyst provides the required area for a particular reaction. It has a regenerable property since the presence of the oxidant, sonication, and irradiation to eliminate the pollutants are valueless unless there is a proper catalyst.…”

Section: Catalytic Oxidationmentioning

confidence: 99%

Sustainable environment through using porous materials: A review on wastewater treatment

Al‐Jubouri

Al‐Batty

Al‐Hamd

et al. 2023

Asia-Pacific J Chem Eng

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Porous materials play an important role in creating a sustainable environment by improving wastewater treatment's efficacy. Porous materials, including adsorbents or ion exchangers, catalysts, metal–organic frameworks, composites, carbon materials, and membranes, have widespread applications in treating wastewater and air pollution. This review examines recent developments in porous materials, focusing on their effectiveness for different wastewater pollutants. Specifically, they can treat a wide range of water contaminants, and many remove over 95% of targeted contaminants. Recent advancements include a wider range of adsorption options, heterogeneous catalysis, a new UV/H2O2 procedure, ion exchange, Fenton oxidation, membrane activities, ozonation, membrane bioreactor, electrochemical treatment, wet air oxidation, and a carbon capture methodology utilizing various porous materials. A particular focus for innovative research is on developing technologies to synthesize porous materials and assess their performance in removing various pollutants from wastewater at varying experimental conditions. Porous materials can be essential in designing wastewater treatment systems to address the critical environmental issues of water stress and safe drinking water worldwide.

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Phosphotungstic acid immobilized onto ZnO coated zerovalent iron (Fe@ZnO/PW) core/shell magnetic nanocomposite for enhanced photocatalytic bacterial inactivation under visible light

Cited by 25 publications

References 26 publications

Synergistic Photocatalytic-adsorption Removal of Basic Magenta Effect of AgZnO/polyoxometalates Nanocomposite

Synergistic Photocatalytic-adsorption Removal of Basic Magenta Effect of AgZnO/polyoxometalates Nanocomposite

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

Sustainable environment through using porous materials: A review on wastewater treatment

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