Incorporating Rich Mesoporosity into a Ceria-Based Catalyst via Mechanochemistry

Wangcheng Zhan; Shize Yang; Pengfei Zhang; Yanglong Guo; Guanzhong Lu; Matthew F. Chisholm; Sheng Dai

doi:10.1021/acs.chemmater.7b02206

Incorporating Rich Mesoporosity into a Ceria-Based Catalyst via Mechanochemistry

Wangcheng Zhan, Shize Yang, Pengfei Zhang, Yanglong Guo, Guanzhong Lu, Matthew F. Chisholm, Sheng Dai

Chemical Sciences Division

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

Ceria-based materials possessing mesoporous structures afford higher activity than the corresponding bulk materials in CO oxidation and other catalytic applications, because of the wide pore channel and high surface area. The development of a direct, template-free, and scalable technology for directing porosity inside ceria-based materials is highly welcome. Herein, a family of mesoporous transition-metal-doped ceria catalysts with specific surface areas up to 122 m² g^-1 is constructed by mechanochemical grinding. No templates, additives, or solvents are needed in this process, while the mechanochemistry-mediated restructuring and the decomposing of the organic group led to plentiful mesopores. Interestingly, the copper species are evenly dispersed in the ceria matrix at the atomic scale, as observed in high resolution scanning transmission electron microscopy in high angle annular dark field. The copper-doped ceria materials show good activity in the CO oxidation.

Original language	English
Pages (from-to)	7323-7329
Number of pages	7
Journal	Chemistry of Materials
Volume	29
Issue number	17
DOIs	https://doi.org/10.1021/acs.chemmater.7b02206
State	Published - Sep 12 2017

Funding

S.D. and P.F.Z. were supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy. W.C.Z., Y.L.G., and G.Z.L. appreciate the financial support from the National Key Basic Research Program of China (2013CB933200), the National Key Research and Development Program of China (2016YFC0204300), and 111 project (B08021). The electron microscopy at ORNL (S.Z.Y. and M.F.C.) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division and performed in part as a user project at the ORNL Center for Nanophase Materials Sciences, which is a DOE Office of the Science User Facility. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1053575.

Funders	Funder number
DOE Office of Science
DOE Office of Science
ORNL Center for Nanophase Materials Sciences
Office of Basic Energy Sciences
National Science Foundation	ACI-1053575
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 Basic Research Program of China (973 Program)	2013CB933200, 2016YFC0204300
Higher Education Discipline Innovation Project	B08021

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10.1021/acs.chemmater.7b02206

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title = "Incorporating Rich Mesoporosity into a Ceria-Based Catalyst via Mechanochemistry",

abstract = "Ceria-based materials possessing mesoporous structures afford higher activity than the corresponding bulk materials in CO oxidation and other catalytic applications, because of the wide pore channel and high surface area. The development of a direct, template-free, and scalable technology for directing porosity inside ceria-based materials is highly welcome. Herein, a family of mesoporous transition-metal-doped ceria catalysts with specific surface areas up to 122 m2 g-1 is constructed by mechanochemical grinding. No templates, additives, or solvents are needed in this process, while the mechanochemistry-mediated restructuring and the decomposing of the organic group led to plentiful mesopores. Interestingly, the copper species are evenly dispersed in the ceria matrix at the atomic scale, as observed in high resolution scanning transmission electron microscopy in high angle annular dark field. The copper-doped ceria materials show good activity in the CO oxidation.",

author = "Wangcheng Zhan and Shize Yang and Pengfei Zhang and Yanglong Guo and Guanzhong Lu and Chisholm, {Matthew F.} and Sheng Dai",

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AU - Chisholm, Matthew F.

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AB - Ceria-based materials possessing mesoporous structures afford higher activity than the corresponding bulk materials in CO oxidation and other catalytic applications, because of the wide pore channel and high surface area. The development of a direct, template-free, and scalable technology for directing porosity inside ceria-based materials is highly welcome. Herein, a family of mesoporous transition-metal-doped ceria catalysts with specific surface areas up to 122 m2 g-1 is constructed by mechanochemical grinding. No templates, additives, or solvents are needed in this process, while the mechanochemistry-mediated restructuring and the decomposing of the organic group led to plentiful mesopores. Interestingly, the copper species are evenly dispersed in the ceria matrix at the atomic scale, as observed in high resolution scanning transmission electron microscopy in high angle annular dark field. The copper-doped ceria materials show good activity in the CO oxidation.

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Incorporating Rich Mesoporosity into a Ceria-Based Catalyst via Mechanochemistry

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