Hierarchically Ordered Macro–Mesoporous Electrocatalyst with Hydrophilic Surface for Efficient Oxygen Reduction Reaction

Metal-organic frameworks (MOFs) offer versatile templates/precursors to prepare supported metal catalysts. However, the afforded catalysts usually exhibit microporous structures and unsuitable wettability, which will restrict the accessibility of active sites in liquid-phase reactions. Herein, an etching-functionalization strategy is developed for the construction of a tannic-acid-functionalized MOF with a unique hollow-wall and 3D-ordered macroporous (H-3DOM) structure. The functional MOF can be further employed as an ideal precursor for the synthesis of cobalt supported on oxygen/nitrogen-co-doped carbon composites with H-3DOM structures, and hydrophilic surface. The H-3DOM structure can improve the external…

• NN
  National Natural Science Foundation of China

  Awards: 52172142, 21825802, 22138003, 22108083
• NS
  Natural Science Foundation of Guangdong Province

  Awards: 2023B1515040005, 2023A1515010312
• SK
  State Key Laboratory of Pulp and Paper Engineering

  Awards: 2022ZD05, 2022C04
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 2022ZYGXZR108, 2022ZYGXZR017