Piezocatalytic Generation of Hydrogen Peroxide Over UiO‐66: Effect of Metal Centers Modulation DOI Open Access
Wei Yuan,

Hang Yao,

Jing Zhang

et al.

Asia-Pacific Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

ABSTRACT Hydrogen peroxide (H₂O₂) exhibits significant market demand given its versatile applications. However, the conventional anthraquinone‐based production process suffers from high energy consumption and generation of toxic by‐products. Piezocatalysis, capable converting external mechanical into chemical energy, offers a highly promising method for producing H₂O₂. In this study, we thoroughly explored intrinsic effect metal centers in typical metal–organic framework UiO‐66. X‐UiO‐66 (X = Hf, Zr, Ce) was successfully synthesized assessed piezocatalytic H₂O₂ production. Among three samples, Hf‐UiO‐66 exhibited best piezoresponse to ultrasonic radiation with an extraordinary piezoelectric coefficient 1.1 nm V −1 , achieving hourly yield 827.6 μmol g under vibration vigorous stirring. Mechanism study revealed that formation primarily oxygen reduction occurred via two‐electron transfer pathway, during which significantly enhanced carrier separation transportation. Additionally, played crucial role facilitating charge reaction. This work contributes rational design continuous improvement MOF catalysts, enhancing their applicability diverse catalytic

Language: Английский

Piezocatalytic Generation of Hydrogen Peroxide Over UiO‐66: Effect of Metal Centers Modulation DOI Open Access
Wei Yuan,

Hang Yao,

Jing Zhang

et al.

Asia-Pacific Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

ABSTRACT Hydrogen peroxide (H₂O₂) exhibits significant market demand given its versatile applications. However, the conventional anthraquinone‐based production process suffers from high energy consumption and generation of toxic by‐products. Piezocatalysis, capable converting external mechanical into chemical energy, offers a highly promising method for producing H₂O₂. In this study, we thoroughly explored intrinsic effect metal centers in typical metal–organic framework UiO‐66. X‐UiO‐66 (X = Hf, Zr, Ce) was successfully synthesized assessed piezocatalytic H₂O₂ production. Among three samples, Hf‐UiO‐66 exhibited best piezoresponse to ultrasonic radiation with an extraordinary piezoelectric coefficient 1.1 nm V −1 , achieving hourly yield 827.6 μmol g under vibration vigorous stirring. Mechanism study revealed that formation primarily oxygen reduction occurred via two‐electron transfer pathway, during which significantly enhanced carrier separation transportation. Additionally, played crucial role facilitating charge reaction. This work contributes rational design continuous improvement MOF catalysts, enhancing their applicability diverse catalytic

Language: Английский

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