Rapid Ozone Decomposition over Water‐activated Monolithic MoO 3 /Graphdiyne Nanowalls under High Humidity

作者：Yuhua Zhu, Leyi Yang, Jiami Ma, Yarong Fang, Ji Yang, Xiaoping Chen, Juan Zheng, Shuhong Zhang, Wei Chen, Chuanqi Pan, Baojian Zhang, Xiaofeng Qiu, Zhu Luo, Jinlong Wang, Yanbing Guo · 发表于：Angewandte Chemie International Edition · 年份：2023 · DOI：10.1002/anie.202309158 · 被引用次数：61 · 研究领域：Advanced Photocatalysis Techniques、Catalytic Processes in Materials Science、Supercapacitor Materials and Fabrication

Abstract Catalytic ozone (O 3 ) decomposition at high relative humidity (RH) remains a great challenge due to the catalysts poison and deactivation under high humidity. Here, we firstly elaborate the role of water activation and the corresponding mechanism of the promoted O 3 decomposition over the three‐dimensional monolithic molybdenum oxide/graphdiyne (MoO 3 /GDY) catalyst. The O 3 decomposition over MoO 3 /GDY reaches up to 100 % under high humid condition (75 % RH) at room temperature, which is 4.0 times as high as that of dry conditions, significantly surpasses other carbon‐based MoO 3 materials(≤7.1 %). The sp‐hybridized carbon in GDY donates electrons to MoO 3 along the C−O−Mo bond, facilitating water activation to form hydroxyl species. As a result, hydroxyl species dissociated from water act as new active sites, promoting the adsorption of O 3 and the generation of new intermediate species (hydroxyl ⋅OH and superoxo ⋅O 2 − ), which significantly lowers the energy barriers of O 3 decomposition (0.57 eV lower than dry conditions).