Single-atom confined materials (SACMs) have been widely researched as catalysts in many fields within recent years. However, this class of materials may not only serve as a catalyst but also as a support material for certain reactions. Here we propose a general strategy to use SACMs as supports for tuning loaded noble metal (e.g., Ru) nanoparticles with enhanced catalytic activity. As a proof of concept, a nickel single-atom confined nitrogen-doped carbon nanotube (NCNT) superstructure is prepared as a support to load noble metal Ru for catalytic wet air oxidation of acetic acid. Improved catalytic activity with a mineralization rate of ~97.5% is achieved. Further, adsorption configurations based on DFT calculations also confirm our deduction that the introduction of single-atom Ni changes the intrinsic property of NCNTs and affects the loaded active Ru nanoparticles.

近年来，单原子约束材料（SACM）已作为许多领域的催化剂得到了广泛研究。但是，这类材料不仅可以用作催化剂，而且可以用作某些反应的载体材料。在这里，我们提出了一种通用策略，将SACM作为支撑剂来调节负载的贵金属（例如Ru）纳米颗粒，具有增强的催化活性。作为概念证明，制备了镍单原子约束的氮掺杂碳纳米管（NCNT）上层结构，作为负载贵金属Ru的载体，用于催化湿式氧化乙酸。实现了更高的催化活性，矿化率达到〜97.5％。进一步，