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Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array

Author

Listed:
  • Son Hoang

    (University of Connecticut)

  • Yanbing Guo

    (University of Connecticut
    College of Chemistry, Central China Normal University)

  • Andrew J. Binder

    (Oak Ridge National Laboratory)

  • Wenxiang Tang

    (University of Connecticut)

  • Sibo Wang

    (University of Connecticut)

  • Jingyue (Jimmy) Liu

    (Arizona State University)

  • Huan Tran

    (University of Connecticut)

  • Xingxu Lu

    (University of Connecticut)

  • Yu Wang

    (Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences)

  • Yong Ding

    (School of Materials Science and Engineering, Georgia Institute of Technology)

  • Eleni A. Kyriakidou

    (Oak Ridge National Laboratory)

  • Ji Yang

    (College of Chemistry, Central China Normal University)

  • Todd J. Toops

    (Oak Ridge National Laboratory)

  • Thomas R. Pauly

    (Umicore Autocat USA Inc.)

  • Rampi Ramprasad

    (University of Connecticut)

  • Pu-Xian Gao

    (University of Connecticut)

Abstract

Supported metal single atom catalysts (SACs) present an emerging class of low-temperature catalysts with high reactivity and selectivity, which, however, face challenges on both durability and practicality. Herein, we report a single-atom Pt catalyst that is strongly anchored on a robust nanowire forest of mesoporous rutile titania grown on the channeled walls of full-size cordierite honeycombs. This Pt SAC exhibits remarkable activity for oxidation of CO and hydrocarbons with 90% conversion at temperatures as low as ~160 oC under simulated diesel exhaust conditions while using 5 times less Pt-group metals than a commercial oxidation catalyst. Such an excellent low-temperature performance is sustained over hydrothermal aging and sulfation as a result of highly dispersed and isolated active single Pt ions bonded at the Ti vacancy sites with 5 or 6 oxygen ions on titania nanowire surfaces.

Suggested Citation

  • Son Hoang & Yanbing Guo & Andrew J. Binder & Wenxiang Tang & Sibo Wang & Jingyue (Jimmy) Liu & Huan Tran & Xingxu Lu & Yu Wang & Yong Ding & Eleni A. Kyriakidou & Ji Yang & Todd J. Toops & Thomas R. P, 2020. "Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14816-w
    DOI: 10.1038/s41467-020-14816-w
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    Cited by:

    1. Sai Zhang & Yuxuan Liu & Mingkai Zhang & Yuanyuan Ma & Jun Hu & Yongquan Qu, 2022. "Sustainable production of hydrogen with high purity from methanol and water at low temperatures," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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