首页> 中文期刊>能源化学:英文版 >Low temperature surface oxygen activation in crystalline MnO_(2) triggered by lattice confined Pd single atoms

Low temperature surface oxygen activation in crystalline MnO_(2) triggered by lattice confined Pd single atoms

     

摘要

Tuning the coordination environment is the research axis of single atom catalysts (SACs). SACs are commonly stabilized by various defects from support. Here, we report a lattice confined Pd SAC using MnO_(2) as support. Compared with the Pd clusters anchored on the surface, the lattice confined Pd single atoms allows spontaneous exaction of surrounding lattice oxygen at room temperature when employed in CO oxidation. The MnO_(2) supported Pd SAC exhibited a high turnover frequency of 0.203 s^(−1) at low reaction temperature, which is higher than that of recently reported Pd SACs. Theoretical calculations also confirmed the confined monatomic Pd activate lattice oxygen with an ultralow energy barrier. Our results illustrate that the unique coordination environment of single atom provided by lattice confinement is promising to boost the activity of SACs.

著录项

  • 来源
    《能源化学:英文版》|2021年第11期|136-144|共10页
  • 作者单位

    College of Food and Biological Engineering,Xihua University,Chengdu 610039,Sichuan,China;

    CAS Key Laboratory of Low-Carbon Conversion Science and Engineering,Shanghai Advanced Research Institute(SARI),Chinese Academy of Sciences(CAS),No.100,Haike Road,Pudong New District,Shanghai 201210,China;

    State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,No.2999 North Renmin Road,Songjiang District,Shanghai 201620,China;

    Institute for the Advancement of Higher Education,Hokkaido University,Sapporo 060-0817,Japan;

    Department of Chemistry,Faculty of Science,Hokkaido University,N10W8,Kita-ku,Sapporo,Hokkaido 060-0810,Japan;

    RIKEN,SPring-8 Center,1-1-1 Kouto,Sayo-cho,Sayo-gun,Hyogo 679-5148,Japan;

    International Institute for Carbon-Neutral Energy Research(WPI-I2CNER),Kyushu University,Motooka 744,Nishi-ku,Fukuoka 819-0395,Japan;

    Advanced Institute for Materials Research(AIMR),Tohoku University,2-1-1 Katahira,Aoba-ku,Sendai 980-8577,Japan;

    Shanghai Synchrotron Radiation Facility,Zhangjiang Lab,Shanghai Advanced Research Institute(SARI),Chinese Academy of Sciences(CAS),No.239 Zhangheng Road,Pudong New District,Shanghai 201203,China;

    Shanghai Institute of Applied Physics,Chinese Academy of Science,No.2019 Jia Luo Road,Jiading District,Shanghai 201800,China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理化学(理论化学)、化学物理学;
  • 关键词

    Single atom catalysts(SACs); Lattice confinement; Oxygen activation; Manganese oxide nanofiber;

  • 入库时间 2022-08-21 05:15:07

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