The acquisition of monodisperse metal nanoparticles covered by conductive metal–organic frameworks (cMOFs) is an archetype of an electron-unobstructed core–shell composite, valued for its potential electrocatalytic ability and selectivity enhancement. In this work, Pt@cMOF composites with direct interfaces showed better performance in the oxygen reduction reaction than composites with indirect interfaces or with lower electroconductivity shells. This composite was proved to exhibit the ability to expedite electron transfer with different thicknesses of electrode materials. The detailed mechanism was studied by exploring the conductivity of shell materials, interfaces between cores and shells, and the surface electronic structure of the nanoparticles. We also report reaction selectivity from the inherent porous shells in the selective reduction of cinnamyl alcohol.

中文翻译：

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具有固有选择性的电子无障碍核壳复合材料的原型：用金属纳米粒子包裹的导电金属有机框架

获得由导电金属-有机框架 (cMOF) 覆盖的单分散金属纳米粒子是电子无障碍核壳复合材料的原型，因其潜在的电催化能力和选择性增强而受到重视。在这项工作中，具有直接界面的 Pt@cMOF 复合材料在氧还原反应中表现出比具有间接界面或具有较低电导率壳的复合材料更好的性能。这种复合材料被证明具有加速不同厚度电极材料的电子转移的能力。通过探索壳材料的导电性、核与壳之间的界面以及纳米粒子的表面电子结构，研究了详细的机制。