Coupling Water Oxidation and Oxygen Reduction for Photocatalytic H2O2 Production over ZnIn2S4/UiO66-NH2 Heterojunctions via Dual Channel Pathways DOI
Miao Li, Long Chen, Ying Yang

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Artificial photosynthesis of hydrogen peroxide (H2O2) from oxygen and water is a promising approach for converting low-density solar energy into versatile chemical energy. However, the generation H2O2 through single-channel reduction reaction (ORR) prevalent, while oxidation (WOR) frequently neglected. Herein, we constructed Z-scheme ZnIn2S4/UiO66-NH2 (ZIS/UNH) heterojunctions, integrating ORR WOR dual pathways photocatalytic without noble cocatalysts sacrificial agents. The optimized ZIS/UNH exhibits highest yield 0.85 mmol g-1 h-1, which 2.2 14 times those ZIS UNH, respectively. formation heterojunction efficiently promotes separation transfer photogenerated carriers retaining holes with high oxidizing ability electrons strong reducing ability. free radical quenching DMPO-ESR trapping experiments demonstrate that heterojunctions produce in dual-channel mode different ZIS. generated by consist two-step single-electron ·O2- as an intermediate product direct one-step WOR.

Язык: Английский

Coupling Water Oxidation and Oxygen Reduction for Photocatalytic H2O2 Production over ZnIn2S4/UiO66-NH2 Heterojunctions via Dual Channel Pathways DOI
Miao Li, Long Chen, Ying Yang

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Artificial photosynthesis of hydrogen peroxide (H2O2) from oxygen and water is a promising approach for converting low-density solar energy into versatile chemical energy. However, the generation H2O2 through single-channel reduction reaction (ORR) prevalent, while oxidation (WOR) frequently neglected. Herein, we constructed Z-scheme ZnIn2S4/UiO66-NH2 (ZIS/UNH) heterojunctions, integrating ORR WOR dual pathways photocatalytic without noble cocatalysts sacrificial agents. The optimized ZIS/UNH exhibits highest yield 0.85 mmol g-1 h-1, which 2.2 14 times those ZIS UNH, respectively. formation heterojunction efficiently promotes separation transfer photogenerated carriers retaining holes with high oxidizing ability electrons strong reducing ability. free radical quenching DMPO-ESR trapping experiments demonstrate that heterojunctions produce in dual-channel mode different ZIS. generated by consist two-step single-electron ·O2- as an intermediate product direct one-step WOR.

Язык: Английский

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