Trends in photocatalytic degradation of organic dye pollutants using nanoparticles: A review

Inorganic Chemistry Communications, Год журнала: 2023, Номер 159, С. 111613 - 111613

Опубликована: Окт. 24, 2023

Язык: Английский

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Biosynthesis and characterization of iron oxide nanoparticles fabricated using cell-free supernatant of Pseudomonas fluorescens for antibacterial, antifungal, antioxidant, and photocatalytic applications

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 6, 2025

This study investigates the biosynthesis of iron oxide nanoparticles (Fe2O3NPs) using cell-free supernatant Pseudomonas fluorescens. The synthesized Fe2O3NPs were characterized through UV–VIS, XRD, FTIR, FESEM, EDX, TEM, BET, and VSM analyses. XRD results confirmed that successfully EDX analysis indicated accounted for 89.5% sample composition. Imaging via SEM TEM revealed average diameters 20.43 ± 5.38 nm 24.32 5.03 nm, respectively. antimicrobial effects assessed against four bacterial strains fungal species. Inhibition zones 8.35 0.103 mm 8.31 0.128 observed syringae Staphylococcus aureus at a concentration 400 μg mL−1 Fe2O3NPs. Antifungal efficacy showed growth rate reductions 90.4% Aspergillus niger, 71.1% Monilinia fructigena, 68.8% Botrytis cinerea, 84.2% Penicillium expansum, compared to controls. demonstrated photocatalytic degradation efficiencies 89.93%, 84.81%, 79.71% methyl violet, orange, methylene blue, Also exhibited significant DPPH free radical scavenger activity with an IC50 value 8.45 0.59 mL−1. study's findings underscored potential in addressing environmental pollution combating pathogenic microorganisms.

Язык: Английский

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3D Porous MoS₂-Decorated Reduced Graphene Oxide Aerogel as a Heterogeneous Catalyst for Reductive Transformation Reactions

Langmuir, Год журнала: 2023, Номер 39(36), С. 12865 - 12877

Опубликована: Авг. 28, 2023

The MoS2-based reduced graphene oxide aerogel (MoS2-rGOA)-assisted organic transformation reactions are presented. MoS2-rGOA is used as a heterogeneous catalyst for the reduction of benzene derivatives such benzaldehyde, nitrobenzene, and benzonitrile to benzyl alcohol, aniline, benzamide their derivatives, respectively, in green solvents (water/methanol) reducing agents (hydrazine hydrate having N2 H2 byproducts). mechanistic features pathway, substrate scope, best suitable conditions by varying temperature, solvent, agent, loading, time, etc. optimized. All synthesized products obtained quantitative yield with purity well characterized based on nuclear magnetic resonance analysis. Further, it also observed that our efficiently recyclable works checked up 5 cycles.

Язык: Английский

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Photocatalytic Degradation of Organic Dyes by Magnetite Nanoparticles Prepared by Co-Precipitation

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(14), С. 7876 - 7876

Опубликована: Июль 18, 2024

Iron oxide nanoparticles were synthesized by co-precipitation using three different iron salt stoichiometric mole ratios. Powder X-ray diffraction patterns revealed the inverse cubic spinel structure of magnetite oxide. Transmission electron microscopic images showed Fe3O4 with shapes and average particle sizes 5.48 nm for Fe3O4-1:2, 6.02 Fe3O4-1.5:2, 6.98 Fe3O4-2:3 an energy bandgap 3.27 to 3.53 eV. The as-prepared used as photocatalysts degrade brilliant green (BG), rhodamine B (RhB), indigo carmine (IC), methyl red (MR) under visible light irradiation. photocatalytic degradation efficiency 80.4% was obtained from Fe3O4-1:2 green, 61.5% Fe3O4-1.5:2 B, 77.9% 73.9% both red. This indicates that is more efficient in than one dye. study shows degrades most effectively at pH 9, best 6.5, efficiently 3. Recyclability experiments can be recycled four times are photostable.

Язык: Английский

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Waste Iron Dust Derived Iron Oxide Nanoparticles for Efficient Adsorption of Multiple Azo Dyes

ACS Sustainable Resource Management, Год журнала: 2024, Номер 1(2), С. 278 - 288

Опубликована: Янв. 16, 2024

Herein, we have described a simple and viable approach to use the waste byproduct of steel industries: red iron oxide dust (IOD) for synthesizing its reduced version as reduced-IOD (r-IOD). The r-IOD possess active multiphases oxides (Fe@Fe3O4@Fe2O3) is used adsorption three organic dyes. surface area magnetically found be ∼4.5 times than that IOD shows better mesoporosity. Due having larger area, efficient dyes include two anionic azo dyes, namely, RG 19 (Reactive Green 19), RO 16 Orange 16) one cationic MG (Malachite Green) dye, with maximum capacities ∼2162.9, ∼2273.1, ∼1400.2 mg g–1, respectively. Various batch experiments related kinetics, isotherms, thermodynamics are studied understand rate, order, type, feasibility adsorption. effects temperature, pH, loading, concentration, on process also investigated. Moreover, capacity satisfactorily tested via an external spiking method toward dye removal from industrial wastewater laboratory wastewater.

Язык: Английский

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Ultra-fast microwave catalytic degradation of multiple dyes by waste derived carbon nano onions

Materials Today Sustainability, Год журнала: 2024, Номер 26, С. 100724 - 100724

Опубликована: Фев. 19, 2024

Язык: Английский

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Recent advances in photocatalytic nanomaterials for environmental remediation: Strategies, mechanisms, and future directions

Chemosphere, Год журнала: 2024, Номер 364, С. 143142 - 143142

Опубликована: Авг. 19, 2024

Язык: Английский

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Comprehensive review on the advancement of transition metal oxides infused cellulose acetate nanocomposites for the photocatalytic degradation of emerging pollutants

Journal of Water Process Engineering, Год журнала: 2024, Номер 66, С. 106010 - 106010

Опубликована: Авг. 26, 2024

Язык: Английский

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Fluorine-doped TiO2/SiO2/ activated carbon ternary hybrids: Enhancing adsorption and photocatalytic degradation of rhodamine B and methyl orange

Materials Research Bulletin, Год журнала: 2024, Номер 176, С. 112826 - 112826

Опубликована: Апрель 7, 2024

Язык: Английский

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Fenton-mediated thermocatalytic conversion of CO₂ to acetic acid by industrial waste-derived magnetite nanoparticles

Chemical Communications, Год журнала: 2024, Номер 60(25), С. 3449 - 3452

Опубликована: Янв. 1, 2024

Steel industry waste-derived rod-like Fe 3 O 4 -NPs were used for thermo-catalytic reduction of CO 2 to acetic acid in aqueous-H medium. H facilitates the reaction by generating high concentrations OH˙ and +/ ˙, supporting yield.

Язык: Английский

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