Valorization of agro-industrial biowaste to green nanomaterials for wastewater treatment: Approaching green chemistry and circular economy principles

Journal of Environmental Management, Journal Year: 2022, Volume and Issue: 311, P. 114806 - 114806

Published: Feb. 28, 2022

Language: Английский

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Efficient removal TC by Zn@SnO2/PI via the synergy of adsorption and photocatalysis under visible light

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 444, P. 136567 - 136567

Published: April 25, 2022

Language: Английский

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Potential progress in SnO2 nanostructures for enhancing photocatalytic degradation of organic pollutants

Catalysis Communications, Journal Year: 2023, Volume and Issue: 177, P. 106642 - 106642

Published: March 16, 2023

Persistent organic pollutants (POPs) are proven to possess considerable resistance environmental degradation such that they could not be entirely removed through the typical treatment processes. The consistent presence of these contributes impending obnoxious health impacts concurrently inflicted on wildlife and human beings. In alignment getting rid menaces, photocatalysis process has arrived as a tremendous remedy thereby availability clean secure water ensured. this review we focus potential progress in SnO2 nanostructures for enhancing photocatalytic pollutants, its current challenges future perspectives.

Language: Английский

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Fabrication of Effective Co-SnO2/SGCN Photocatalysts for the Removal of Organic Pollutants and Pathogen Inactivation

Crystals, Journal Year: 2023, Volume and Issue: 13(2), P. 163 - 163

Published: Jan. 17, 2023

Substantial improvement is needed in efficient and affordable decolorization disinfection methods to solve the issues caused by dyes harmful bacteria water wastewater. This work involves photocatalytic degradation of methylene blue (MB) as well gram-negative gram-positive cobalt-doped tin oxide (Co-SnO2) nanoparticles (NPs) Co-SnO2/SGCN (sulfur-doped graphitic carbon nitride) nanocomposites (NCs) under sunlight. The coprecipitation approach was used synthesize photocatalysts. Maximum seen with 7% Co-SnO2 NPs compared other (1, 3, 5, 9 wt.%) NPs. were then homogenized different amounts (10, 30, 50, 70 weight %) sulfur-doped nitride (SGCN) develop heterostructures most significant degree MB degradation. synthesized samples identified modern characterization such FT-IR, SEM, EDX, UV-visible, XRD spectroscopies. Co-SnO2/50% SGCN composites showed a increase degraded 96% after 150 min sunlight irradiation. Both (E. coli) (B. subtiles) bacterial strains subjected antibacterial activity. All shown have vigorous activity against bacteria, but exhibited maximum bactericidal action. Thus, proposed NC an organic/inorganic photocatalyst that recyclable stable without lowering efficiency. Hence, SGCNNC has potential be employed treatment dual-functional material simultaneously removes organic pollutants eradicates bacteria.

Language: Английский

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A pragmatic review on photocatalytic degradation of methyl orange dye pollutant using greenly biofunctionalized nanometallic materials: A focus on aquatic body

Applied Organometallic Chemistry, Journal Year: 2023, Volume and Issue: 37(7)

Published: April 20, 2023

Water is the source of life. But unfortunately, 80% wastewater discharged into aquatic body untreated globally, which industry responsible for 70% such water abstraction through discharge pollutants like methyl orange. According to WWAP, pollution kills 100 million individuals, 2 marine animals, and seabirds yearly, by 2025, it forecasted that ~1000 inhabitants in arid zones will experience severe crisis, thus, security has become focal outcry due daily environmental escalation caused rapid growth industries population. Recently, biosynthesized nanoparticles as photocatalysts have answered call sustainable treatment orange dye effluent photodegradation because their efficient photoactivity, inexpensiveness, eco‐benignness. In this review, photocatalytic‐degradation mechanism pathways environment presence • OH − O using green were mechanistically discussed. The highest degradation efficiency was found be 100%, final mineralization products H CO , least time taken min with silver being most commonly used degrader plant extracts employed bioreductant biosynthesis nanoparticles.

Language: Английский

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Enhanced ultraviolet driven photocatalytic activity of CTS-SnO2-MWCNTs ternary nanohybrid for photodegradation of methylene blue and bacteria in aqueous solutions

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 34, P. 103559 - 103559

Published: Feb. 4, 2024

Developing low-cost metal-based photocatalyst with great effectiveness for degradation of organic pollutants is still a serious challenge. In the present study, we suggest novel "suitable bandgap matching and interfacial engineering" strategy through synthesis ternary nanohybrid to attain an effective photocatalytic reaction. The construction synthesized by embedded SnO2 NPs on carbon nanotubes (CNTs) surface homogeneously, that anchored chitosan (CTS). photocatalysts characterized FT-IR, XRD, FESEM, EDX, elemental mapping, AFM, TEM, BET UV–Vis DRS spectroscopy. comparison CTS-SnO2, CTS-SnO2-MWCNTs led increasing (97.59%) adsorption activity (84.24%) aqueous methylene blue (MB) dye contaminant under irradiation UV light in darkness 30 min. addition, feasible reaction mechanism suggested scavenger experiment performed order find active radical species role responsible decoloration. antibacterial nanostructures against Staphylococcus aureus, Bacillus subtilis Escherichia coli strains were determined applying disk diffusion method showed considerable bactericidal bacteria strains. So, could be features. Moreover, stability even after numerous runs. This research presents promising results developing efficient, stable, noble metal-free light-driven photocatalyst.

Language: Английский

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Emerging trends and promising prospects in nanotechnology for improved remediation of wastewater contaminants: Present and future outlooks

Environmental Nanotechnology Monitoring & Management, Journal Year: 2024, Volume and Issue: 21, P. 100913 - 100913

Published: Jan. 8, 2024

Language: Английский

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ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

Materials, Journal Year: 2021, Volume and Issue: 14(24), P. 7537 - 7537

Published: Dec. 8, 2021

The biosynthesis of oxide semiconductor nanoparticles (NPs) using materials found in nature opens a wide field study focused on sustainability and environmental protection. Biosynthesized NPs have the capacity to eliminate organic dyes, which pollute water cause severe damage environment. In present work, green synthesis zinc (ZnO) was carried out Capsicum annuum var. Anaheim extract. photocatalytic elimination methylene blue (MB), methyl orange (MO), Rhodamine B (RhB) UV radiation evaluated. were characterized by scanning transmission electron microscopy (SEM TEM) SEM-coupled energy dispersive spectroscopy (EDS), attenuated total reflectance-infrared (ATR-IR), X-ray photoelectron (XPS), diffraction (XRD), Photoluminescence (PL), ultraviolet-visible (UV-Vis). TEM analysis showed an average size 40 nm quasi-spherical shape. ATR-IR ZnO contained functional groups from through XRD indicated that hexagonal zincite crystal structure with crystallite approximately 17 nm. photoluminescence spectrum (PL) presented emission band at 402 From UV-Vis spectra TAUC model, band-gap value be 2.93 eV. Finally, assessment proved achieved 100% MB 60 min exposure, 85 92% degradation MO RhB, respectively, 180 min. This indicates NPs, addition friendly method for their synthesis, manage excellent activity various pollutants.

Language: Английский

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Enhanced photocatalytic degradation of malachite green dye by highly stable visible-light-responsive Fe-based tri-composite photocatalysts

Environmental Science and Pollution Research, Journal Year: 2022, Volume and Issue: 29(46), P. 69861 - 69874

Published: May 16, 2022

Abstract A novel visible-light-sensitive ZnVFeO 4 photocatalyst has been fabricated by the precipitation method at different pH values for enhanced photocatalytic degradation of malachite green (MG) dye as a representative pollutant under visible light irradiation neutral conditions. The structure and optical characteristics prepared photocatalysts were investigated XRD, FTIR, N2 adsorption–desorption, TEM, diffuse reflectance spectroscopy (DRS), photoluminescence (PL) analyses. In addition, activity superior efficiency to be more than that mono bi-metal oxides iron zinc oxides, respectively. best sample, 3, significantly enhances rate 12.7 × 10 −3 min −1 can retain stable photodegradation 90.1% after five cycles. effect catalyst dose initial concentration on process studied. This promising behavior may attributed low bandgap decreased electron–hole recombination heterostructures. scavenger experiment confirmed hydroxyl radicals induced MG effectively. Hence, is reliable visible-light-responsive heterostructure with excellent potential organic pollutants in wastewater treatment.

Language: Английский

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A critical review on advances in TiO2-based photocatalytic systems for CO2 reduction

Applied Thermal Engineering, Journal Year: 2022, Volume and Issue: 216, P. 119009 - 119009

Published: July 16, 2022

Language: Английский

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