Engineering of Activated Biochar Derived from Pine Needle Waste Biomass as Ozonation Catalyst in Water

Advanced Sustainable Systems, Год журнала: 2025, Номер 9(5)

Опубликована: Март 16, 2025

Abstract Valorization of biomass wastes into carbon‐based catalysts for water treatment is a clear paradigm sustainability.Herein, we investigate an unprecedented transformation pine needle waste activated biochars (PNCs) as ozonation aqueous oxalic acid degradation. The physico‐chemical and textural properties PNCs are tailored by combining pyrolysis temperatures up to 1200 °C the use or not KOH K 2 CO 3 activating agents. structural these carbocatalysts correlated with their catalytic activities. PNC catalyst pyrolized at 4 h using (PNC1200‐4K ) provides complete pollutant degradation after 150 min, while without activation requires 300 min. PNC1200‐4K performance compares favorably previous reports. superior activity this reusable attributed its highest population π‐extended aromatic domains active sites together high porosity. formation 1 O , HO . HOO radicals supported electron paramagnetic resonance measurements selective quenching experiments. Unlike most analogous reports, herein, demonstrate that in presence can degrade even common radical scavengers.

Язык: Английский

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Nano-architectured polypyrrole based magnetic nanocatalyst for the N- arylation of imidazoles and fused imidazoles

Catalysis Today, Год журнала: 2024, Номер unknown, С. 115180 - 115180

Опубликована: Дек. 1, 2024

Язык: Английский

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Cost-effective adsorption of cationic dyes using ZnO nanorods supported by orange peel-derived carbon

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

Опубликована: Фев. 3, 2025

Abstract Here, porous carbon (PC) and ZnO nanorods@PC (ZnO-NR@PC) composite derived from orange peel (OP) have been synthesized via a simple carbonization process. The prepared materials characterized by XRD, FT-IR, TEM, BET analysis. adsorptive properties of the PC ZnO-NR@PC investigated toward methylene blue (MB) crystal violet (CV) cationic dyes their aqueous solutions. adsorption studies concluded that maximum efficiency was achieved after 90 min in basic conditions (pH = 10). Langmuir, Freundlich, Dubinin–Radushkevich (D-R), Temkin non-linear isotherm models were applied to fit experimental data. MB CV OP is fitted with Freundlich model, both Langmuir model. estimated capacity 74.45 74.89 mg/g, respectively. calculated free energy D-R indicates MB, dye molecules OP, PC, may be physical. kinetic revealed onto pseudo-second-order On otherhand, thermodynamic confirmed an endothermic spontaneous Furthermore, displayed high stability overall removal about 90% five cycles. mechanism proposed controlled electrostatic bonding, π-π interactions, ion exchange. results indicated potential ability OP-derived carbons as adsorbents for media.

Язык: Английский

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Functional Carbon Nanospheres from Mulberry leaves for Improved flux, Fouling resistance and Dye rejection

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115879 - 115879

Опубликована: Фев. 1, 2025

Язык: Английский

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Onion peel derived carbon nanoparticles incorporated polysulfone membranes: enhanced dye removal from water

RSC Advances, Год журнала: 2025, Номер 15(10), С. 7786 - 7798

Опубликована: Янв. 1, 2025

Graphical abstract indicating the synthesis of bio-based carbon nanoparticles (ON11) incorporated in mixed matrix membranes for dye adsorption with its mechanism.

Язык: Английский

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Turning mango kernel waste into high-energy porous carbon: a sustainable electrode material for high-performance supercapacitors with exceptional stability

RSC Advances, Год журнала: 2025, Номер 15(18), С. 14183 - 14193

Опубликована: Янв. 1, 2025

This study explores the sustainable production of high-performance supercapacitor electrodes from waste mango kernels, addressing growing need for eco-friendly energy storage solutions. Porous carbon materials were synthesized via pyrolysis at varying temperatures (700, 800, 900, and 1000 °C), designated as MK7, MK8, MK9, MK10, respectively. The was obtained a simple carbonization, yielding highly porous structure with large specific surface area 1348.9 m2 g-1, MK9 material confirmed by BET analysis. Raman spectroscopy revealed high degree graphitization D G bands, indicating presence both disordered graphitic domains. SEM imaging showed well-developed, interconnected morphology, while XRD patterns amorphous nature partially crystalline resulting evaluated their electrochemical performance in applications. Electrochemical characterization that sample, pyrolyzed 900 °C, exhibited highest capacitance 205.8 F surpassing other samples. To optimize device performance, symmetric supercapacitors fabricated using CR2032 coin cell configuration different electrolytes concentrations. KOH electrolyte demonstrated maximum power density 5137.86 W kg-1, an 12.32 h 112.4 g-1. Furthermore, this excellent cycling stability, maintaining its over 100 000 galvanostatic charge-discharge cycles. A practical demonstration ability to red LED approximately 15 minutes. These results highlight potential utilizing biomass, specifically efficient development.

Язык: Английский

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Synthesis and characterization of biowaste-derived porous carbon supported palladium: a systematic study as a heterogeneous catalyst for the reduction of nitroarenes

Reaction Kinetics Mechanisms and Catalysis, Год журнала: 2024, Номер 137(6), С. 2989 - 3004

Опубликована: Авг. 9, 2024

Язык: Английский

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In Situ Synthesis of NiCo2O4/Carbon Nanocomposites: Play of Carbon Content and Symmetric/Asymmetric Device Configuration on Supercapacitor Performance

New Journal of Chemistry, Год журнала: 2024, Номер 48(35), С. 15556 - 15566

Опубликована: Янв. 1, 2024

In situ synthesized NiCo 2 O 4 /C (D2) nanocomposite with optimal carbon content surpassingly boosts supercapacitor performance via synergistic effect, while tailoring their symmetric/asymmetric configurations enables tunable energy and power densities.

Язык: Английский

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