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所属单位：化学与生命科学学院

发表刊物：Small

项目来源：国家自然科学基金项目

摘要：In this work, by combining the superiority of polyoxometalates (POMs) and catalytic single-metal site Co of metalloporphyrin, a series of mixed-valence POM-based metal-organic frameworks (MOFs) composites is synthesized by a post-modification method. The electron-transfer property of POM@ PCN-222(Co) composite is significantly enhanced owing to the directional electron-transfer from POM to single-metal site Co in PCN-222(Co). In particular, H-POM@PCN-222(Co) gives a high Faradaic efficiency of 96.2% for electroreduction of CO2 into CO and good stability over 10 h. DFT calculations confirm that the directional electron transfer, which accelerates the multi-electron transfer from the electrode to active single-metal site Co, enriches the electron density of the Co center, and ultimately reduces the energy of the rate-determining step, thus increasing the catalytic activity of CO2 reduction reaction (CO2RR). This work therefore suggests some new insight for the design of efficient electrocatalysts for CO2RR.

合写作者：Ming-Liang Sun,Yi-Rong Wang

第一作者：何雯雯

论文类型：期刊论文

卷号：17

期号：20

页面范围：1

ISSN号：1613-6810

是否译文：否

发表时间：2021-05-20