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Title: Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation

Abstract

An ultrastable Au nanocatalyst based on a heterostructured perovskite support with high surface area and uniform LaFeO3 nanocoatings was successfully synthesized and tested for CO oxidation. Strikingly, small Au nanoparticles (4-6 nm) are obtained after calcination in air at 700 °C and under reaction conditions. The designed Au catalyst not only possessed extreme sintering resistance but also showed high catalytic activity and stability because of the strong interfacial interaction between Au and the heterostructured perovskite support.

Authors:
 [1];  [1]; ORCiD logo [2];  [3];  [2]; ORCiD logo [2];  [3];  [4];  [3];  [2];  [5]; ORCiD logo [4];  [6]; ORCiD logo [7]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  2. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
  3. Department of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
  4. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
  5. Electron Microscopy Center of Chongqing University, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
  6. Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
  7. Department of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States; Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1399407
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Tian, Chengcheng, Zhu, Xiang, Abney, Carter W., Liu, Xiaofei, Foo, Guo Shiou, Wu, Zili, Li, Meijun, Meyer, Harry M., Brown, Suree, Mahurin, Shannon M., Wu, Sujuan, Yang, Shi-Ze, Liu, Jingyue, and Dai, Sheng. Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation. United States: N. p., 2017. Web. doi:10.1021/acscatal.7b00483.
Tian, Chengcheng, Zhu, Xiang, Abney, Carter W., Liu, Xiaofei, Foo, Guo Shiou, Wu, Zili, Li, Meijun, Meyer, Harry M., Brown, Suree, Mahurin, Shannon M., Wu, Sujuan, Yang, Shi-Ze, Liu, Jingyue, & Dai, Sheng. Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation. United States. doi:10.1021/acscatal.7b00483.
Tian, Chengcheng, Zhu, Xiang, Abney, Carter W., Liu, Xiaofei, Foo, Guo Shiou, Wu, Zili, Li, Meijun, Meyer, Harry M., Brown, Suree, Mahurin, Shannon M., Wu, Sujuan, Yang, Shi-Ze, Liu, Jingyue, and Dai, Sheng. Wed . "Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation". United States. doi:10.1021/acscatal.7b00483. https://www.osti.gov/servlets/purl/1399407.
@article{osti_1399407,
title = {Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation},
author = {Tian, Chengcheng and Zhu, Xiang and Abney, Carter W. and Liu, Xiaofei and Foo, Guo Shiou and Wu, Zili and Li, Meijun and Meyer, Harry M. and Brown, Suree and Mahurin, Shannon M. and Wu, Sujuan and Yang, Shi-Ze and Liu, Jingyue and Dai, Sheng},
abstractNote = {An ultrastable Au nanocatalyst based on a heterostructured perovskite support with high surface area and uniform LaFeO3 nanocoatings was successfully synthesized and tested for CO oxidation. Strikingly, small Au nanoparticles (4-6 nm) are obtained after calcination in air at 700 °C and under reaction conditions. The designed Au catalyst not only possessed extreme sintering resistance but also showed high catalytic activity and stability because of the strong interfacial interaction between Au and the heterostructured perovskite support.},
doi = {10.1021/acscatal.7b00483},
journal = {ACS Catalysis},
number = 5,
volume = 7,
place = {United States},
year = {Wed Apr 12 00:00:00 EDT 2017},
month = {Wed Apr 12 00:00:00 EDT 2017}
}

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  • Metal oxides are commonly used as the supports of gold nanoparticles for catalytic CO oxidation, whereas metal salts are rarely considered suitable supports. In the present work, we developed a new kind of gold nanocatalyst supported on heterostructured PbSO4-MCF mesoporous materials that was prepared by an in situ growth method using dodecylbenzenesulfonate (SOBS) as a sulfonate precursor. It was found that an Au/PbSO4-MCF (SDBS) catalyst preheated at 300 degrees C showed high CO conversion below 100 degrees C. In addition, the stability of selected catalysts was studied as a function of time on stream. Because of the alteration of surfacemore » properties, these Au nanocatalysts were highly sinter-resistant. Published by Elsevier B.V.« less
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