In-situ growth of metal–organic framework on ionic cross-linking cellulose aerogel for adsorption and Fenton degradation of tetracycline

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132707 - 132707

Published: April 1, 2025

Language: Английский

Green Synthesis of Nano-Sized Multiflower-like Fe₃O₄@SiO₂/_L-Tryptophan from Natural Resources and Agricultural Waste: A Photo-Switchable Oxidation Catalyst

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

This study presents a novel, eco-friendly, and cost-effective magnetic hybrid photocatalyst, Fe3O4@SiO2/L-tryptophan, synthesized through scalable three-step green approach using natural agricultural waste. The Fe3O4@SiO2/L-tryptophan nanoparticle features core-shell structure with high surface area (63.14 m2/g), strong visible-light absorption (λ > 448 nm), narrow band gap (1.84 eV), superparamagnetic properties (22 emu/g), enabling efficient separation reusability. Characterization techniques (XRD, XPS, FT-IR, FE-SEM, HR-TEM, UV-vis DRS, TGA, BET, EIS) confirmed its structural stability, charge separation, interfacial transport. photocatalyst achieved 82.1% oxidative desulfurization of dibenzothiophene (DBT) conversion rates for toluene (85%) styrene (90%) under visible light O2 as an oxidant. It retained over 85% activity after five cycles, demonstrating excellent durability. For the first time, all components are derived from sources: Fe3O4 sorghum seed extract, SiO2 rice husk, L-tryptophan enhanced separation. sustainable synthesis reduces chemical waste energy consumption, setting new benchmark environmentally friendly photocatalysts.

Language: Английский

Pivotal Role of Surface Sulfur Atoms in CdS Nanoparticles for the C–C Coupling of Benzyl Alcohol

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 18, 2025

Language: Английский