Journal of Materials Chemistry A p. 6152 - 6159 (2021)
Update date:2022-08-11
Topics:
Li, Zhen
Zhang, Junhao
Jing, Xiaoting
Dong, Jing
Liu, Huifang
Lv, Hongjin
Chi, Yingnan
Hu, Changwen
Electrocatalytic oxidation has been proven as a sustainable and promising alternative to traditional chemical transformation, but its further development is limited by the use of noble-metal electrocatalysts. Herein, a polyoxometalate-based electrode material,H5PMo10V2O40@CTF(denoted asPMo10V2@CTF), has been successfully fabricated through electrostatic assembly of a molecular polyoxometalate catalyst,PMo10V2, with a porous cationic covalent triazine framework (CTF), which, to our knowledge, represents the first combination of polyoxometalate with a cationic CTF. The resultingPMo10V2@CTFexhibits high activity for the selective electrocatalytic oxidation of alcohols to aldehydes, achieving 99% conversion of benzyl alcohol, over 99% selectivity of benzyl aldehyde, and at the same time near unity H2production. Notably, the reported electrocatalytic system presents good atom economy, high energy conversion (96% faradaic efficiency), remarkable catalytic activity and robustness for at least eight recycles. Based on the various experimental and spectroscopic analyses, a possible catalytic mechanism was proposed, revealing that such excellent electrocatalytic performance is attributed to the versatile redox ability ofPMo10V2and the good porosity and adsorption property of the CTF in the constructedPMo10V2@CTFcomposite.
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