Synthesis and Peroxide Activation Mechanism of Bimetallic MOF for Water Contaminant Degradation: A Review

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Abstract
Metal–organic framework (MOF) materials possess a large specific surface area, high porosity, and atomically dispersed metal active sites, which confer excellent catalytic performance as peroxide (peroxodisulfate (PDS), peroxomonosulfate (PMS), and hydrogen peroxide (H2O2)) activation catalysts. However, the limited electron transfer characteristics and chemical stability of traditional monometallic MOFs restrict their catalytic performance and large-scale application in advanced oxidation reactions. Furthermore, the single-metal active site and uniform charge density distribution of monometallic MOFs result in a fixed activation reaction path of peroxide in the Fenton-like reaction process. To address these limitations, bimetallic MOFs have been developed to improve catalytic activity, stability, and reaction controllability in peroxide activation reactions. Compared with monometallic MOFs, bimetallic MOFs enhance the active site of the material, promote internal electron transfer, and even alter the activation path through the synergistic effect of bimetals. In this review, we systematically summarize the preparation methods of bimetallic MOFs and the mechanism of activating different peroxide systems. Moreover, we discuss the reaction factors that affect the process of peroxide activation. This report aims to expand the understanding of bimetallic MOF synthesis and their catalytic mechanisms in advanced oxidation processes.
Funding Information
  • Modern Analysis and Gene Sequencing Center of Zhengzhou University (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • National Supercomputing Center in Zhengzhou (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • National Natural Science Foundation of China (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • training plan of young backbone teachers in Colleges and universities of Henan Province (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • Youth Talent Promotion Project of Henan Province (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • Open Research Fund of Henan Key Laboratory of Water Resources Conservation and Intensive Utilization in the Yellow River Basin (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)
  • Open fund from Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology (52000163, 2021GGJS005, 2023HYTP035, HAKF202101, CJSP2022001)

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