文献类型：期刊文献

英文题名：Metal-node coupling of triboelectricity in conductive metal-organic frameworks for contact-electro-catalytic H2O2 generation

作者：Li, Meichen[1];Zhou, Shuqi[1];Guo, Yinben[1];Xiao, Xueshuang[1];Xi, Qiqing[1];Wang, Ximing[1];Han, Xin[2];Yang, Qiang[2]

机构：[1]Shanghai Univ Engn Sci, Sch Mat Sci & Engn, Shanghai 201620, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：545

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20262921140221);Scopus(收录号：2-s2.0-105044899120);WOS:【SCI-EXPANDED(收录号:WOS:001830279300001)】；

基金：Natural Science Foundation of Shanghai (Grant No. 24ZR1426500) .

语种：英文

外文关键词：Contact-electro-catalysis; MOFs; Triboelectric property; H 2 O 2 production

摘要：H2O2 generation in a green, simple and efficient way under ambient conditions is highly desired to induce free radicals to promote the desirable redox reaction and has been realized by emerging contact-electro-catalysis (CEC). At present, the catalytic systems employed in CEC are largely restricted to a few kinds of fluorocarbon polymers. Herein, metal-organic framework (M3(HHTP)2, M = Ni, Zn, Cu) is introduced to produce H2O2 from air and water at room temperature and normal pressure by CEC. The influence of the metal centers in MOFs on their triboelectric properties is systematically analyzed. Cu3(HHTP)2 exhibits stronger electron-withdrawing capability owing to the higher second ionization energy of Cu2+ and its shorter Cu-O coordination bond. As CEC catalyst, Cu3(HHTP)2 achieves an enhanced yield of H2O2 at 25.4 mmol center dot L-1 center dot gcat-1 center dot h-1 via synergistic oxygen reduction reaction-water oxidation reaction (ORR-WOR) pathways driven by its Cu-O active sites. Moreover, Cu3(HHTP)2 maintains its chemical and coordination stability during repeated ultrasonic cycles, while morphology reconstruction further increases the accessible reactive surface area. Furthermore, density functional theory (DFT) calculations and work function demonstrate that Cu3(HHTP)2 possesses energy barrier advantages in both ORR-WOR pathways, and its moderate work function endows the material with balanced redox capability, thus providing theoretical support for its excellent CEC performance in H2O2 production. This work provides a new alternative for an efficient CEC catalyst and enriches the understanding of the CEC phenomenon.