Photocatalytic Oxidation of Benzene to Phenol with O₂ over WO₃ Treated by Vacuum-Sealed Annealing

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

Published: Feb. 6, 2025

Photocatalytic oxidation of benzene to phenol using molecular O2 is one the most promising sustainable approaches for green synthesis phenol. Introducing oxygen vacancies (OVs) on semiconductor surfaces by defect engineering a strategy enhance efficiency produce due unique functions OVs in facilitating charge separation and activation O2. Herein, vacuum-sealed annealing has been well developed generate abundant surface semiconductors, such as WO3. The well-sealed quartz vial creates well-controlled low-pressure condition formation without need external energy maintaining vacuum state. Moreover, gaseous species generated during thermal process help mitigate stress-induced defects, particularly bulk defects. annealed WO3 with sufficient reduced defects shows better photocatalytic performance one-step O2, compared synthesized through Ar H2 atmospheres. present found be further applicable engineer wide range semiconducting photocatalysts optimize their properties efficient photocatalysis other OV-promoted systems.

Language: Английский

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Bi₄Ti₃O₁₂ Crystallized in 40Bi₂O₃‐40B₂O₃‐20TiO₂ Glass Matrix for Photo‐Piezocatalytic Dye Degradation

Luminescence, Journal Year: 2025, Volume and Issue: 40(2)

Published: Feb. 1, 2025

ABSTRACT The coupling of photocatalysis and piezocatalysis has gained significant interest among researchers. In this study, we present the photo‐piezocatalytic activity exhibited by bismuth titanate (Bi 4 Ti 3 O 12 ) glass‐ceramics (BTO‐GC). BTO‐GC samples were prepared in a glass system 40Bi 2 ‐40B ‐20TiO (in mol %) using melt‐quench technique. catalyst was characterized X‐ray diffraction (XRD) technique Raman spectroscopy for its structure phase analysis. Surface morphology chemical composition analyzed scanning electron microscopy (SEM) photoelectron (XPS), respectively. catalytic performance evaluated photocatalysis, piezocatalysis, photo‐piezocatalysis processes. Methylene blue (MB) dye degradation UV–Vis spectrophotometer. A maximum ~86% achieved solar light process. This study highlights synergistic advances understanding underlying mechanism.

Language: Английский

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Efficient degradation of tetracycline by a novel zirconium‑cerium doped manganese ferrite catalyst: Performance, toxicity evaluation and mechanism insight

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 73, P. 107735 - 107735

Published: April 16, 2025

Language: Английский

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Construction of highly efficient CoFe-LDO/BiOBr-OV S-scheme heterojunction photocatalyst for dehalogenative removal of disinfection by-products from water: Performance and mechanism

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163170 - 163170

Published: April 1, 2025

Language: Английский

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