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

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 °C 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.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [1];  [1];  [4];  [1];  [1]; ORCiD logo [5];  [6]; ORCiD logo [3];  [7]; ORCiD logo [3];  [8]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Connecticut, Storrs, CT (United States)
  2. Univ. of Connecticut, Storrs, CT (United States); Central China Normal Univ., Wuhan (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. (Jimmy) [Arizona State Univ., Tempe, AZ (United States)
  5. Chinese Academy of Sciences (CAS), Shanghai (China)
  6. Georgia Inst. of Technology, Atlanta, GA (United States)
  7. Central China Normal Univ., Wuhan (China)
  8. Umicore Autocat USA Inc., Auburn Hills, MI (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1617823
Grant/Contract Number:  
AC05-00OR22725; EE0006854; CBET1344792; TG-DMR170031; CHE-1465057; 21777051
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 11; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Hoang, Son, Guo, Yanbing, Binder, Andrew J., Tang, Wenxiang, Wang, Sibo, Liu, Jingyue, Tran, Huan, Lu, Xingxu, Wang, Yu, Ding, Yong, Kyriakidou, Eleni A., Yang, Ji, Toops, Todd J., Pauly, Thomas R., Ramprasad, Rampi, and Gao, Pu-Xian. Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array. United States: N. p., 2020. Web. https://doi.org/10.1038/s41467-020-14816-w.
Hoang, Son, Guo, Yanbing, Binder, Andrew J., Tang, Wenxiang, Wang, Sibo, Liu, Jingyue, Tran, Huan, Lu, Xingxu, Wang, Yu, Ding, Yong, Kyriakidou, Eleni A., Yang, Ji, Toops, Todd J., Pauly, Thomas R., Ramprasad, Rampi, & Gao, Pu-Xian. Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array. United States. https://doi.org/10.1038/s41467-020-14816-w
Hoang, Son, Guo, Yanbing, Binder, Andrew J., Tang, Wenxiang, Wang, Sibo, Liu, Jingyue, Tran, Huan, Lu, Xingxu, Wang, Yu, Ding, Yong, Kyriakidou, Eleni A., Yang, Ji, Toops, Todd J., Pauly, Thomas R., Ramprasad, Rampi, and Gao, Pu-Xian. Wed . "Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array". United States. https://doi.org/10.1038/s41467-020-14816-w. https://www.osti.gov/servlets/purl/1617823.
@article{osti_1617823,
title = {Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array},
author = {Hoang, Son and Guo, Yanbing and Binder, Andrew J. and Tang, Wenxiang and Wang, Sibo and Liu, Jingyue and Tran, Huan and Lu, Xingxu and Wang, Yu and Ding, Yong and Kyriakidou, Eleni A. and Yang, Ji and Toops, Todd J. and Pauly, Thomas R. and Ramprasad, Rampi and Gao, Pu-Xian},
abstractNote = {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 °C 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.},
doi = {10.1038/s41467-020-14816-w},
journal = {Nature Communications},
number = 1,
volume = 11,
place = {United States},
year = {2020},
month = {2}
}

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