MXene as emerging material for photocatalytic degradation of environmental pollutants

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 477, P. 214965 - 214965

Published: Dec. 13, 2022

Language: Английский

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Application of Electrochemical Oxidation for Water and Wastewater Treatment: An Overview

Molecules, Journal Year: 2023, Volume and Issue: 28(10), P. 4208 - 4208

Published: May 20, 2023

In recent years, the discharge of various emerging pollutants, chemicals, and dyes in water wastewater has represented one prominent human problems. Since pollution is directly related to health, highly resistant compounds aquatic environments will pose many potential risks health all living beings. Therefore, a very acute problem that constantly increased years with expansion industries. Consequently, choosing efficient innovative treatment methods remove contaminants crucial. Among advanced oxidation processes, electrochemical (EO) most common effective method for removing persistent pollutants from municipal industrial wastewater. However, despite great progress using EO treat real wastewater, there are still gaps. This due lack comprehensive information on operating parameters which affect process its costs. this paper, among scientific articles, impact operational performances, comparison between different reactor configurations, report general mechanisms organic have been reported. Moreover, an evaluation cost analysis energy consumption requirements also discussed. Finally, combination photocatalysis (PC), called photoelectrocatalysis (PEC), discussed reviewed briefly. article shows direct relationship important amount costs final removal efficiency pollutants. Optimal conditions can be achieved by paying special attention design, lead higher more treatment. The rapid development impacted other green result approaches face pressing challenge. PEC proved promising degradation technology, renewable sources adopted as primer perform environmentally friendly

Language: Английский

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Green synthesis of palladium nanoparticles using aqueous plant extracts and its biomedical applications

Journal of King Saud University - Science, Journal Year: 2022, Volume and Issue: 34(4), P. 102017 - 102017

Published: April 9, 2022

In recent years, metallic nanoparticles manufactured by green method have become a popular environmentally beneficial technology. Our current study describes an eco-friendly, biological production of palladium (PdNPs) with leaf extracts from Allium fistulosum, Basella alba and Tabernaemontana divaricate. Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible (UV–vis) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) transmission (TEM) be used to characterise the produced PdNPs. The results our SEM examination showed spherical form size 500 nm, 2 µm µm, correspondingly, for alba, divaricate derived TEM images all three extracts, diameter shape generated PdNPs were rather constant. Therefore, diameters ranging 5 nm measured respectively. Finally, evaluated antioxidant, antifungal antibacterial activity. optimized taken application dye degradation process varying concentration 0 50 different aliquots dispersions at time 10 about 1 mL congo red (1x10-4 M) was mixed 0.25 mg kept continuous stirring room temperature (RT). data demonstrated that effects duration strongly related functional groups as well nanoparticles, played important role in decreasing metal ions stabilising manner.

Language: Английский

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Innovative progress in graphene derivative-based composite hybrid membranes for the removal of contaminants in wastewater: A review

Chemosphere, Journal Year: 2022, Volume and Issue: 306, P. 135590 - 135590

Published: July 5, 2022

Language: Английский

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Hierarchical nanorods of graphene oxide decorated SnO2 with high photocatalytic performance for energy conversion applications

Fuel, Journal Year: 2022, Volume and Issue: 324, P. 124599 - 124599

Published: May 20, 2022

Language: Английский

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Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 294, P. 121189 - 121189

Published: April 30, 2022

Language: Английский

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Electron-hole recombination effect of SnO2 – CuO nanocomposite for improving methylene blue photocatalytic activity in wastewater treatment under visible light

Journal of King Saud University - Science, Journal Year: 2022, Volume and Issue: 35(1), P. 102388 - 102388

Published: Oct. 27, 2022

Heterojunction photocatalysts have gained much attraction in pollutant degradation applications due to their unique good adsorption and photocatalytic decomposition capacity more cycle durability. Tin oxide (SnO2) doped with copper (CuO) heterostructured photocatalyst was synthesized by a simple solution processes technique. X-ray diffraction fluorescence spectroscopy were used examine the structural properties of SnO2 - CuO heterostructure. Analyses FE-SEM TEM performed on samples determine surface morphology. The photodegradation property heterostructure studied using methylene blue (MB) model pollutant, where (90.3 % at 180 min) shown better than SnO2. Therefore, n-p-junction (SnO2 CuO) catalysis boosted MB detailed studies electron-hole pair recombination conducted n-p-junctions observe effect interface been published.

Language: Английский

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MnO2 Doped with Ag Nanoparticles and Their Applications in Antimicrobial and Photocatalytic Reactions

Catalysts, Journal Year: 2023, Volume and Issue: 13(2), P. 397 - 397

Published: Feb. 12, 2023

A wide range of nanoparticles have been produced for photocatalysis applications. Nonetheless, degrading organic dyes requires that are efficient and excellent. As a photocatalyst, pure manganese oxide (MnO2) was prepared via sol–gel method using silver (Ag) transition metal oxide. In addition to X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), the crystal structure elemental composition were analysed. According XRD data, MnO2 is highly has small crystallite size. The presence functional groups confirmed clarified Fourier-transform infrared spectra (FTIR). By irradiating doped photocatalysts with visible light, UV-vis, μ-Raman, surface areas determined. result, aqueous methylene blue (MB) solutions under light irradiation, Ag demonstrated high degradation efficiencies utilised establish heterogeneous dominance. this paper, we demonstrate photocatalytic efficiency oxides exclusively determined by particle size area nano-sized materials. Due their charge ratio different orientations, highest efficiency. Generally, resistant bacteria both Gram-positive Gram-negative types (B. sublittus Escherichia coli). There still need more research be performed on reducing toxicity so they can used as an effective alternative antibiotics disinfectants, particularly biomedical

Language: Английский

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Electrochemical applications of CdO-Co-ZnO nanocomposites, their synthesis and characterization reveal their multifunctional abilities

Materials Science for Energy Technologies, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

In this study, we investigated the electrochemical catalysis potential of hybrid nanocomposites containing CdO, Co and ZnO nanocomposites, as opposed to Zn-O doped have weaker Coulomb interactions due their ionic bonds. Because CdO form a covalent bond, interacts more strongly with O than Zn. order reduce nanoparticle crystallinity, oxygen defects improve interaction between −O in lattice. From SEM micrographs, it appears that does not completely change under influence dopants. It can be seen from image both materials very tightly packed particles. The dopants prevent them absorbing large range visible wavelengths. is energy-dense for 5.28 eV compare 5.14 nanocomposites. fact matrix has tuneable bandgap evident since different types are used its manufacture. There at least three distinct absorption modes around 450, 498, 676 cm−1. addition 450 cm−1 498 vibrational modes, Co-O stretching along [1 0 1] plane also been observed As method studying charge carriers, photoluminescence spectroscopy usually used. This analyze electron-hole pairs (e−/h+) formed by semiconducting blue emission luminescence band 615 nm valence 635 nm. With increasing cobalt zinc concentrations, nanomaterials lose remanent magnetization. demonstrated significant coercive effects pure additively incorporated solutions regardless anisotropic, morphological, porosity, particle size distribution. Electrochemical impedance spectrum measurements were conducted 100 kHz 0.01 Hz. According Nyquist plot, purity Co, show high frequency resistance transfer. Nanocomposites contained & exposed UV light 120 min remove solution. degradation MO virtually nonexistent when no photocatalyst present, but photocatalyst, reach 92.56 %.

Language: Английский

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Unlocking the potential of metal vanadates for energy, environment and biomedicine: Pioneering developments and perspectives

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 534, P. 216553 - 216553

Published: March 13, 2025

Language: Английский

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