Progress and perspectives of Pd-based catalysts for direct synthesis of hydrogen peroxide

Wei, Jiao; Wang, Shen; Wu, Jing; Cao, Dong; Cheng, Daojian

doi:10.1039/d3im00054k

Ind. Chem. Mater.

2024

DOI: 10.1039/d3im00054k

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Progress and perspectives of Pd-based catalysts for direct synthesis of hydrogen peroxide

Jiao Wei

Shen Wang

Jing Wu

et al.

Abstract: Hydrogen peroxide (H2O2) is a green oxidant that has been widely used. The direct synthesis of hydrogen peroxide (DSHP) significant advantages in terms of high atomic economy and environmentally friendly...

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Cited by 9 publications

References 114 publications

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Metal‐Based Oxygen Reduction Electrocatalysts for Efficient Hydrogen Peroxide Production

Bu,

Ma,

Wang

et al. 2024

Advanced Materials

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Hydrogen peroxide (H2O2) is a high‐value chemical widely used in electronics, textiles, paper bleaching, medical disinfection, and wastewater treatment. Traditional production methods, such as the anthraquinone oxidation process and direct synthesis, require high energy consumption, and involve risks from toxic substances and explosions. Researchers are now exploring photochemical, electrochemical, and photoelectrochemical synthesis methods to reduce energy use and pollution. This review focuses on the 2‐electron oxygen reduction reaction (2e− ORR) for the electrochemical synthesis of H2O2, and discusses how catalyst active sites influence O2 adsorption. Strategies to enhance H2O2 selectivity by regulating these sites are presented. Catalysts require strong O2 adsorption to initiate reactions and weak *OOH adsorption to promote H2O2 formation. The review also covers advances in single‐atom catalysts (SACs), multi‐metal‐based catalysts, and highlights non‐noble metal oxides, especially perovskite oxides, for their versatile structures and potential in 2e− ORR. The potential of localized surface plasmon resonance (LSPR) effects to enhance catalyst performance is also discussed. In conclusion, emphasis is placed on optimizing catalyst structures through theoretical and experimental methods to achieve efficient and selective H2O2 production, aiming for sustainable and commercial applications.

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Metal‐Based Oxygen Reduction Electrocatalysts for Efficient Hydrogen Peroxide Production

Bu,

Ma,

Wang

et al. 2024

Advanced Materials

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Metal‐Free Modification Overcomes the Photocatalytic Limitations of Graphitic Carbon Nitride: Efficient Production and In Situ Application of Hydrogen Peroxide

Deng,

Xiong,

Zhang

et al. 2024

Advanced Energy Materials

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Graphitic carbon nitride (g‐C3N4) assisted photocatalytic production of hydrogen peroxide (H2O2 has already attracted the interest of many researchers due to its environmental sustainability. Nevertheless, the inherent drawbacks of g‐C3N4 limit its progress. Metal‐free modification strategies, including nanostructure design, defect introduction, doping, and heterojunction construction, have been developed to improve the efficiency of g‐C3N4 photocatalytic H2O2 production. Compared to metal modification, metal‐free strategies avoid the use of precious metals and the leaching of heavy metal ions, which have the advantages of good stability and environmental friendliness. However, a comprehensive review of H2O2 production from g‐C3N4 modified by metal‐free strategies is still lacking. This review first recaps the mechanism of photocatalytic H2O2 production by g‐C3N4, including photoexcitation, carrier separation and redox reactions. Then, the perspective advances in metal‐free modified g‐C3N4 photocatalysts are presented, with the special focus on the kernel connection between different strategies and mechanism based on the pivotal stages of H2O2 production. Subsequently, recent applications of g‐C3N4‐based photocatalysts for in situ generated H2O2, mainly including water purification and organic synthesis, are briefly discussed. Finally, the prospects of g‐C3N4‐based photocatalysts are envisioned with the hope that it will have “something to do” in the field of H2O2 production.

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Masked second-shell sulfur coordinating atomically dispersed Pd on tin oxide boosts the direct synthesis of hydrogen peroxide

Li,

Zheng,

et al. 2024

Chemical Engineering Journal

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Progress and perspectives of Pd-based catalysts for direct synthesis of hydrogen peroxide

Abstract: Hydrogen peroxide (H2O2) is a green oxidant that has been widely used. The direct synthesis of hydrogen peroxide (DSHP) significant advantages in terms of high atomic economy and environmentally friendly...

Cited by 9 publications

References 114 publications

Metal‐Based Oxygen Reduction Electrocatalysts for Efficient Hydrogen Peroxide Production

Metal‐Based Oxygen Reduction Electrocatalysts for Efficient Hydrogen Peroxide Production

Metal‐Free Modification Overcomes the Photocatalytic Limitations of Graphitic Carbon Nitride: Efficient Production and In Situ Application of Hydrogen Peroxide

Masked second-shell sulfur coordinating atomically dispersed Pd on tin oxide boosts the direct synthesis of hydrogen peroxide

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