Two-Dimensional S-Scheme Engineering in Bi2WO6/SV-ZnIn2S4 for Solar-Driven H2O2 Generation in Pure Water DOI
Muhammad Adnan Qaiser, Shahid Ullah Khan, Haopeng Jiang

et al.

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

Published: April 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.

Language: Английский

Two-Dimensional S-Scheme Engineering in Bi2WO6/SV-ZnIn2S4 for Solar-Driven H2O2 Generation in Pure Water DOI
Muhammad Adnan Qaiser, Shahid Ullah Khan, Haopeng Jiang

et al.

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

Published: April 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.

Language: Английский

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