Promoting Pt catalysis for CO oxidation: Via the Mott-Schottky effect

Peiwen Wu; Zili Wu; David R. Mullins; Shi Ze Yang; Xue Han; Yafen Zhang; Guo Shiou Foo; Huaming Li; Wenshuai Zhu; Sheng Dai; Huiyuan Zhu

doi:10.1039/c9nr04055b

Promoting Pt catalysis for CO oxidation: Via the Mott-Schottky effect

Peiwen Wu, Zili Wu, David R. Mullins, Shi Ze Yang, Xue Han, Yafen Zhang, Guo Shiou Foo, Huaming Li, Wenshuai Zhu, Sheng Dai, Huiyuan Zhu

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14 Scopus citations

Abstract

CO oxidation is an important reaction both experimentally and industrially, and its performance is usually dominated by the charge states of catalysts. For example, CO oxidation on the platinum (Pt) surface requires a properly charged state for the balance of adsorption and activation of CO and O₂. Here, we present "Mott-Schottky modulated catalysis" on Pt nanoparticles (NPs) via an electron-donating carbon nitride (CN) support with a tunable Fermi level. We demonstrate that properly-charged Pt presents an excellent catalytic CO oxidation activity with an initial conversion temperature as low as 25 °C and total CO conversion below 85 °C. The tunable electronic structure of Pt NPs, which is regulated by the Fermi level of CN, is a key factor in dominating the catalytic performance. This "Mott-Schottky modulated catalysis" concept may be extended to maneuver the charge state on other metal catalysts for targeted catalytic reactions.

Original language	English
Pages (from-to)	18568-18574
Number of pages	7
Journal	Nanoscale
Volume	11
Issue number	40
DOIs	https://doi.org/10.1039/c9nr04055b
State	Published - Oct 28 2019

Funding

This work was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences and Biosciences Division. P. W. W., W. S. Z. and H. M. L. are grateful for the financial support from the National Nature Science Foundation of China (No. 21576122, 21722604). P. W. W. is grateful to the China Postdoctoral Science Foundation (2019M651743). The electron microscopy at ORNL (S. Z. Y.) was supported in part by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division and through a user proposal supported by ORNL's Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. This work was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences and Biosciences Division. P. W. W., W. S. Z. and H. M. L. are grateful for the financial support from the National Nature Science Foundation of China (No. 21576122, 21722604). P. W. W. is grateful to the China Postdoctoral Science Foundation (2019M651743). The electron microscopy at ORNL (S. Z. Y.) was supported in part by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division and through a user proposal supported by ORNL’s Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.

Funders	Funder number
DOE Office of Science user facility
ORNL's Center for Nanophase Materials Sciences
ORNL’s
Office of Basic Energy Sciences
US Department of Energy
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Oak Ridge National Laboratory
Division of Materials Sciences and Engineering
Chemical Sciences, Geosciences, and Biosciences Division
National Natural Science Foundation of China	21576122, 21722604
National Natural Science Foundation of China
China Postdoctoral Science Foundation	2019M651743
China Postdoctoral Science Foundation
National Aerospace Science Foundation of China

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title = "Promoting Pt catalysis for CO oxidation: Via the Mott-Schottky effect",

abstract = "CO oxidation is an important reaction both experimentally and industrially, and its performance is usually dominated by the charge states of catalysts. For example, CO oxidation on the platinum (Pt) surface requires a properly charged state for the balance of adsorption and activation of CO and O2. Here, we present {"}Mott-Schottky modulated catalysis{"} on Pt nanoparticles (NPs) via an electron-donating carbon nitride (CN) support with a tunable Fermi level. We demonstrate that properly-charged Pt presents an excellent catalytic CO oxidation activity with an initial conversion temperature as low as 25 °C and total CO conversion below 85 °C. The tunable electronic structure of Pt NPs, which is regulated by the Fermi level of CN, is a key factor in dominating the catalytic performance. This {"}Mott-Schottky modulated catalysis{"} concept may be extended to maneuver the charge state on other metal catalysts for targeted catalytic reactions.",

author = "Peiwen Wu and Zili Wu and Mullins, {David R.} and Yang, {Shi Ze} and Xue Han and Yafen Zhang and Foo, {Guo Shiou} and Huaming Li and Wenshuai Zhu and Sheng Dai and Huiyuan Zhu",

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T2 - Via the Mott-Schottky effect

AU - Wu, Peiwen

AU - Wu, Zili

AU - Mullins, David R.

AU - Yang, Shi Ze

AU - Han, Xue

AU - Zhang, Yafen

AU - Foo, Guo Shiou

AU - Li, Huaming

AU - Zhu, Wenshuai

AU - Dai, Sheng

AU - Zhu, Huiyuan

PY - 2019/10/28

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N2 - CO oxidation is an important reaction both experimentally and industrially, and its performance is usually dominated by the charge states of catalysts. For example, CO oxidation on the platinum (Pt) surface requires a properly charged state for the balance of adsorption and activation of CO and O2. Here, we present "Mott-Schottky modulated catalysis" on Pt nanoparticles (NPs) via an electron-donating carbon nitride (CN) support with a tunable Fermi level. We demonstrate that properly-charged Pt presents an excellent catalytic CO oxidation activity with an initial conversion temperature as low as 25 °C and total CO conversion below 85 °C. The tunable electronic structure of Pt NPs, which is regulated by the Fermi level of CN, is a key factor in dominating the catalytic performance. This "Mott-Schottky modulated catalysis" concept may be extended to maneuver the charge state on other metal catalysts for targeted catalytic reactions.

AB - CO oxidation is an important reaction both experimentally and industrially, and its performance is usually dominated by the charge states of catalysts. For example, CO oxidation on the platinum (Pt) surface requires a properly charged state for the balance of adsorption and activation of CO and O2. Here, we present "Mott-Schottky modulated catalysis" on Pt nanoparticles (NPs) via an electron-donating carbon nitride (CN) support with a tunable Fermi level. We demonstrate that properly-charged Pt presents an excellent catalytic CO oxidation activity with an initial conversion temperature as low as 25 °C and total CO conversion below 85 °C. The tunable electronic structure of Pt NPs, which is regulated by the Fermi level of CN, is a key factor in dominating the catalytic performance. This "Mott-Schottky modulated catalysis" concept may be extended to maneuver the charge state on other metal catalysts for targeted catalytic reactions.

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Promoting Pt catalysis for CO oxidation: Via the Mott-Schottky effect

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