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Guanqing Zhang, Yongfang Qu, Qiliang Zhu, Fujian Liu, Lilong Jiang. Hierarchically Porous UiO-66-Fe with Coordinatively Unsaturated Bimetallic Sites for High-Efficiency Selective Oxidation of Hydrogen Sulfide. Green Energy&Environment. doi: 10.1016/j.gee.2026.03.007
Citation: Guanqing Zhang, Yongfang Qu, Qiliang Zhu, Fujian Liu, Lilong Jiang. Hierarchically Porous UiO-66-Fe with Coordinatively Unsaturated Bimetallic Sites for High-Efficiency Selective Oxidation of Hydrogen Sulfide. Green Energy&Environment. doi: 10.1016/j.gee.2026.03.007
shu

Hierarchically Porous UiO-66-Fe with Coordinatively Unsaturated Bimetallic Sites for High-Efficiency Selective Oxidation of Hydrogen Sulfide

doi: 10.1016/j.gee.2026.03.007

  • a. College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China;

  • b. State Key Laboratory of Fluorine & Nitrogen Chemicals and National Engineering Research Center for Chemical Fertilizer Catalyst (NERC-CFC), Fuzhou University, Fuzhou, 350002, China

Funds:

This work was supported by the Natural Science Foundation for the Distinguished Young Scholar of Fujian Province (2024J011012, 2020J06037), the National Natural Science Foundation of China (U24A20528, 22378064, 22378063, 22022804, 21978052), the Zhejiang Provincial Natural Science Foundation of China (Grant NO. LQN26B060018), the Quzhou Science and Technology Plan Project (Grant NO. 2025K194).

  • Received date 13 December 2025, Accepted date 17 March 2026, RevRecd date 14 March 2026, Available online 24 March 2026
    Abstract
  • Hydrogen sulfide (H2S), a toxic and corrosive gas, poses significant environmental and health risks. The selective catalytic oxidation of H2S to elemental sulfur has emerged as an attractive and sustainable solution for purification. In this work, a facile, template-free approach is developed to synthesize hierarchically porous UiO-66-Fe (HP-UiO-66-Fe) featuring abundant coordinatively unsaturated Fe/Zr dual-metal sites. The controlled competition between water and acetic acid as modulators directs the formation of the hierarchical pore architecture, while the asymmetric coordination between Fe and Zr generates numerous coordinatively unsaturated sites. The resulting HP-UiO-66-Fe demonstrates exceptional catalytic performance in H2S oxidation, achieving complete H2S conversion and nearly 100% sulfur selectivity across a broad temperature window. Through integrated structural characterization and catalytic performance evaluation, we reveal that the outstanding activity originates from the synergistic interplay between the unsaturated Fe/Zr bimetallic sites and the hierarchical porous framework, which collectively promote reactant activation, facilitate mass transport and strengthen sulfur poisoning resistance. This study not only presents a highly efficient catalyst for H2S abatement but also proposes a general design strategy for engineering multifunctional MOF catalysts via coupled bimetallic defect creation and pore-structure regulation.

     

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