A comprehensive review on LDH-based catalysts to activate persulfates for the degradation of organic pollutants

npj Clean Water, Journal Year: 2023, Volume and Issue: 6(1)

Published: April 25, 2023

Abstract Degradation of organic contaminants into less toxic substances is the best option to remove these compounds rather than using conventional techniques. The sulfate radical-based-advanced oxidation process an effective strategy that degrades by activating peroxymonosulfate (PMS). Such a generates singlet oxygen ( 1 O 2 ), hydroxyl $$^ \bullet \!{{{\mathrm{OH}}}}$$ ∙OH and $${{{\mathrm{SO}}}}_4^{ \bullet\! - }$$ xmlns:mml="http://www.w3.org/1998/Math/MathML">SO4∙− ) radicals. \!- distinguished its high selectivity activity toward degradation contaminates compared other Various catalysts are employed in PMS activation including layered doubled hydroxides (LDHs), which characterized their facile synthesis catalytic activity. This review article first attempt compile recent progress common pollutants aromatic compounds, pharmaceutical residues, dyes via LDH-based catalysts. pathways, reaction parameters’ influence, stability LDHs, comparisons between different investigated this work.

Language: Английский

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Adsorption of nitrophenol onto a novel Fe3O4-κ-carrageenan/MIL-125(Ti) composite: process optimization, isotherms, kinetics, and mechanism

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(17), P. 49301 - 49313

Published: Feb. 11, 2023

Water pollution is a dreadful affair that has incessantly aggravated, exposing our planet to danger. In particular, the persistent nitro aromatic compound like nitrophenols causes anxiety researchers due their hazardous impacts, excessive usage, and removal difficulty. For this purpose, novel multi-featured composite was constructed based on κ-Carrageenan (κ-Carr), MOF (MIL-125(Ti)), magnetic Fe

Language: Английский

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Trends in effective removal of emerging contaminants from wastewater: A comprehensive review

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 317, P. 100258 - 100258

Published: Jan. 1, 2024

The global challenges of clean water access and security are a growing concern, along with wastewater being major source pollution. Innovative approaches to remediate contaminants needed. However, sustainable development requires innovative from their source. In the last decade, extensive research has been conducted worldwide improve conventional technologies for treatment. Recent strategies include adsorption, advanced oxidation, biodegradation, membrane filtration. no technology can effectively remove contaminants, hybrid systems more promising. This review provides comprehensive overview characteristics organic pollutants degradation using various physical, chemical, biological strategies. Indeed, treatment such as nanotechnology artificial intelligence be considered planning designing modern plants. studies have indicated that compelling than single enhancing process efficiency. discussions anticipated lay foundations future improvements in could emerge promising minimize toxicity allow safe reuse water.

Language: Английский

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Exploring eco-friendly approaches for mitigating pharmaceutical and personal care products in aquatic ecosystems: A sustainability assessment

Chemosphere, Journal Year: 2023, Volume and Issue: 316, P. 137715 - 137715

Published: Jan. 5, 2023

Language: Английский

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Photocatalytic degradation of tetracycline antibiotics by RGO-CdTe composite with enhanced apparent quantum efficiency

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Nov. 3, 2023

RGO-CdTe composite was synthesized using a straightforward, easy-to-realize, one-pot solvothermal technique. The characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller method (BET), Raman spectra, UV-Vis absorption, and photoluminescence measurement. exhibited 83.6% photocatalytic degradation efficiency for the aqueous tetracycline (TC) antibiotic solution apparent quantum yield (AQY) same as high 22.29% which is 2.63 times higher than that of CdTe. scavenger investigation demonstrated although hole acts leading active species, despite that, superoxide hydroxyl radicals have also played crucial roles. initial pH-dependent performance measured. zeta potential at different pH values evaluated to establish towards TC pH. recycling experiment depicts only 10% declines after 5 recycle use photocatalyst. An efficient photocurrent generation in thin film device has been observed. Our study establishes as-synthesized highly potential, stable photocatalyst antibiotics from polluted environment with very good photoinduced charge its solid phase.

Language: Английский

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Synthesis of Reusable Graphene Oxide Based Nickel-Iron Superparamagnetic nanoadsorbent from Electronic Waste for the Removal of Doxycycline in aqueous media

Journal of Hazardous Materials Advances, Journal Year: 2024, Volume and Issue: 14, P. 100429 - 100429

Published: April 25, 2024

Graphene oxide-based nickel-iron superparamagnetic nanoadsorbent (GO/Ni-Fe) was synthesized from electronic waste to effectively remove doxycycline (DXC) in aqueous media. The GO/Ni-Fe has been characterized using a number of instrumental techniques, including X-ray diffractometer, Zeta potential, Fourier transform infrared spectroscopy, elemental analyzer, vibrating sample magnetometer, transmission electron microscopy, energy dispersive x-ray, and photoelectron spectroscopy. These techniques showed that (Ni-F) nanoparticles with an average size 4.26 nm were successfully fabricated on GO surfaces. batch experiments conducted under different conditions, contact time, adsorption dosage, pH, concentration, temperature, determine the optimal conditions process. maximum (90% removal) established within 20 min, while adsorbent dose only 0.1 g/L at pH 5. process best fitted pseudo-second-order model, which suggests interaction is mainly controlled by chemisorption This may be due hydrogen bonding as well electrostatic π-π between adsorbates adsorbents. isotherm data Langmuir models capacity 13.02 mg g−1 25°C indicating monolayer heterogeneous surfaces interaction. properties can easily separated external magnetic field regenerated methanol washing. findings unambiguously demonstrated magnetically separable nanoadsorbents could good choice DXC wastewater sources.

Language: Английский

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Hydroxyapatite@cellulose@nZVI composite: Fabrication and adsorptive removal of doxycycline, Cr(VI) and As(III) from wastewater

Chemical Engineering Science, Journal Year: 2024, Volume and Issue: 288, P. 119796 - 119796

Published: Jan. 23, 2024

Language: Английский

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An Overview of Environmental Catalysis Mediated by Hydrogen Peroxide

Catalysts, Journal Year: 2024, Volume and Issue: 14(4), P. 267 - 267

Published: April 17, 2024

The use of hydrogen peroxide (produced in situ or ex situ) as the main agent oxidative processes environmental pollutant removal is widely studied. degradation water pollutants, such dyes, pharmaceuticals, cosmetics, petroleum derivatives, and even pathogens, has been successfully obtained by different techniques. This review gives an overview more recent methods developed to apply mediated H2O2 other reactive oxygen species (ROS) catalysis, with particular attention strategies (Fenton-like Bio-Fenton, photo- electro-catalysis) materials employed. A wide discussion about characteristics specifically studied for activation, well their chemical composition morphology, was carried out. Moreover, interesting generation enzymes were also presented efficiency applicability compared Fenton electro-Fenton discussed above. Bio-Fenton bi-enzymatic ROS seems be attractive scalable, although not yet applied full-scale plants. critical feasibility, criticalities, perspectives all considered completes this review.

Language: Английский

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Applications of graphene-based photocatalysts for efficient functionalized degradation of some common antibiotics

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 168, P. 112941 - 112941

Published: Aug. 1, 2024

Language: Английский

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Dynamics of reduced graphene oxide: synthesis and structural models

RSC Advances, Journal Year: 2023, Volume and Issue: 13(26), P. 17633 - 17655

Published: Jan. 1, 2023

Technological advancements are leading to an upsurge in demand for functional materials that satisfy several of humankind's needs. In addition this, the current global drive is develop with high efficacy intended applications whilst practising green chemistry principles ensure sustainability. Carbon-based materials, such as reduced graphene oxide (RGO), particular, can possibly meet this criterion because they be derived from waste biomass (a renewable material), synthesised at low temperatures without use hazardous chemicals, and biodegradable (owing their organic nature), among other characteristics. Additionally, RGO a carbon-based material gaining momentum due its lightweight, nontoxicity, excellent flexibility, tuneable band gap (from reduction), higher electrical conductivity (relative oxide, GO), cost natural abundance carbon), potentially facile scalable synthesis protocols. Despite these attributes, possible structures still numerous notable critical variations procedures have been dynamic. Herein, we summarize highlights historical breakthroughs understanding structure perspective GO) recent state-of-the-art protocols, covering period 2020 2023. These key aspects realisation full potential through tailoring physicochemical properties reproducibility. The reviewed work merits prospects toward achieving sustainable, environmentally friendly, low-cost, high-performing large scale devices/processes pave way commercialisation. This sustainability commercial viability material.

Language: Английский

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