Cobalt Single Atom‐Enhanced Photocatalysis: Hetero‐Phase Elemental Phosphorus for Visible Light Hydrogen Production from Pure Water Splitting

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract Elemental P is considered a compelling option for constructing simple, cost‐effective, and full‐spectrum responsive catalytic system hydrogen production, while its full potential overall water‐splitting reactions remains underexplored. This study introduces novel cobalt single‐atom‐assisted photocatalytic efficient production via water splitting. Utilizing an in situ surface phase transformation, amorphous red phosphorus (a‐RP) converted into crystalline black (c‐BP), forming Z‐scheme heterojunction with single atoms (Co 1 ) uniformly dispersed across the surface. Advanced characterization techniques confirm intimate contact strong electronic interactions between Co , c‐BP, a‐RP, significantly enhancing performance. achieves high rate of ≈2497 µmol g −1 h from pure splitting under visible light irradiation remarkable solar‐to‐hydrogen (STH) efficiency 0.86%, outperforming most reported systems. highlights single‐atom catalysts performance photocatalysts. It provides new perspective on designing stable elemental‐based systems sustainable production.

Language: Английский

CuCo₂S₄/g-C₃N_4–x S-Scheme Heterojunction for Photothermal-Assisted Photocatalytic CO₂ Reduction

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 20, 2025

Photocatalytic conversion of CO2 into chemical fuels has emerged as a research hotspot, aiming to mitigate the rapid depletion fossil and alleviate global warming. However, inherent low carrier separation efficiency limited solar light utilization photocatalysts lead unsatisfactory efficiency. In this study, an appealing CuCo2S4/g-C3N4-x S-scheme heterostructure is successfully fabricated by simple polyol reflux method. Notably, nitrogen vacancies enhance Fermi level difference between CuCo2S4 g-C3N4-x, resulting in stronger interfacial built-in electric field. The full-spectrum strong optical absorption capability endows synthesized catalysts with superior light-harvesting property. photothermal effect-induced temperature increase accelerates cyclic process adsorption CO desorption on catalyst surface. Most importantly, charge transfer pathway ensures efficient photogenerated carriers. Thanks these synergistic benefits, exhibits exceptional photothermal-assisted photocatalytic reduction performance. Under simulated sunlight, average production rate reaches 24.64 μmol g-1 h-1, which 12.1 27.1 times higher than that g-C3N4 CuCo2S4, respectively. This study offers novel strategy for designing outstanding

Language: Английский

Porous Nanostructured Cationic Conjugated Polyelectrolyte/Titanium Dioxide Nanosheets Heterojunction for Co-Catalyst-Free Photocatalytic Hydrogen Production

Published: Jan. 1, 2025

Language: Английский