Two-Dimensional S-Scheme Engineering in Bi₂WO₆/S_V-ZnIn₂S₄ for Solar-Driven H₂O₂ Generation in Pure Water

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

The development of eco-friendly hydrogen peroxide (H2O2) synthesis through the photocatalytic oxygen reduction reaction holds significant potential for sustainable chemical engineering; however, it remains hindered by necessity sacrificial agents. Herein, we construct a two-dimensional (2D) S-scheme heterojunction interfacial coupling S-vacancy-rich ZnIn2S4 (SV-ZIS) with Bi2WO6 (BWO) nanosheets via an in situ growth method. Band alignment engineering establishes giant built-in electric field at Bi2WO6/SV-ZIS interface, which drives directional charge transfer, leaving photogenerated electrons and holes highest redox potentials accumulated on BWO SV-ZIS, respectively, O2 H2O oxidation. This spatial separation mechanism enhances both electron-hole pair dissociation efficiency (validated transient photocurrent analysis) preserves strong (reflected free-radical capturing experiments). 2D/2D architecture further amplifies migration atomic-level contact, leading to efficient H2O2 production rate 822 μmol L-1 h-1 pure water. work provides strategy designing high-performance photocatalysts toward under environmentally benign conditions.

Язык: Английский

Novel mesoporous CuO-adorned ZnWO4 heterojunction for visible-light-driven elimination of hexavalent chromium

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 137305 - 137305

Опубликована: Май 1, 2025

Язык: Английский