发表刊物：Journal of Hazardous Materials
关键字：Hierarchical porous Metal-organic framework Defect engineering Synergistic catalysis Oxidative desulfurization
摘要：Metal-organic frameworks (MOFs) as host-guest catalyst in oxidative desulfurization (ODS) face challenges due to limited access to active sites through their microporosity. Herein, hierarchical porous Ce-UiO-66 (HCU) was synthesized through a templating method in an aqueous environment to enhance host accessibility; phosphotungstic acid (PW) was uniformly loaded within the mesopores of HCU via post-impregnation; Ce sites were exposed by selective removing the coordinated acetate from the HCU with the acid post-treatment, these synergistically optimized the catalytic potential of the composite. The resulting HCU@5PW-H demonstrates outstanding desulfurization performance (1000 ppm sulfur removal) within 16 minutes under mild conditions (40 ◦C, O/S molar ratio = 5) and maintains high efficiency over at least eight cycles. The catalytic mechanism involves the decomposition of H2O2 to reactive oxygen species (ROS) and the formation of WVI-peroxo intermediates that determine the ODS activity. This synergistic mechanism offers a promising strategy to enhance the oxidation potential of hierarchical porous MOF-based host-guest catalysts under mild conditions.
合写作者：Zhaokun Wang,Teng Zhao
第一作者：Liang Chu
论文类型：期刊论文
通讯作者：Mu Yang,Ge Wang
卷号：494,
页面范围：138762
是否译文：否
发表时间：2025-05-26
收录刊物：SCI