In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation

doi:10.1016/j.apsusc.2019.03.315

IMR OpenIR

	In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation
	Liu, Xiaoyuan 1,2; Wang, Ke 1,2; Zhou, Yang 1,2; Tang, Xinyue 1,2; Zhu, Xiuhui 3; Zhang, Ruishi 3; Zhang, Xinglai 1; Jiang, Xin 1; Liu, Baodan 1
通讯作者	Liu, Baodan(baodanliu@hotmail.com)
	2019-07-31
发表期刊	APPLIED SURFACE SCIENCE
ISSN	0169-4332
卷号	483 页码:721-729
摘要	The CeO2-ZrO2 solid solution ((Ce, Zr)O-2) has long been utilized in catalytic industry due to its enhanced oxygen storage/release capacity (OSC/ORC) and outstanding thermal stability. In this study, (Ce, Zr)O2-delta monolithic catalysts are successfully in-situ fabricated on flexible titanium mesh through traditional plasma electrolytic oxidation (PEO) method. The surface Ce, Zr atomic percentages (at.%) of the as-prepared catalysts can be widely tailored through the change of the mass ratio of Ce-2(SO4)(3) and Zr(SO4)(2) in the initial electrolyte during PEO process. XRD test in accompany with Raman study reveals the existence of cubic CeO2, stable/metastable tetragonal phases (t, t' phases) and Ce, Zr containing amorphous phase in the catalysts. XPS analysis shows the nonstoichiometric feature of the as-prepared monolithic catalysts while the TEM characterization indicates the nanocrystalline nature of the (Ce, Zr)O2-delta catalysts. After noble metal (Au, PdO) modification, the monolithic catalysts show remarkable CO oxidation activities. The PdO/Ce75Zr25 sample shows the best catalytic activity with a lowest CO oxidation temperature of 135 degrees C. This study establishes an efficient in-situ fabrication strategy toward the preparation of CeO2-ZrO2 solid solution on flexible valve metal substrates with good substrate adherence, which is advantageous and promising for the direct integration of various oxide catalysts toward CO oxidation, TWCs, SCR, etc.
关键词	CeO2-ZrO2 solid solution Plasma electrolytic oxidation In-situ growth Monolithic catalysts Noble metal modification
资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.apsusc.2019.03.315
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51702326] ; National Natural Science Foundation of China[51872296] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[Y4NC711171] ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science[2017RP25]
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000471105000080
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/133878
专题	中国科学院金属研究所
通讯作者	Liu, Baodan
作者单位	1.Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Yingkou Univ Technol, Dept Chem & Environm Engn, Yingkou 115014, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaoyuan,Wang, Ke,Zhou, Yang,et al. In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation[J]. APPLIED SURFACE SCIENCE,2019,483:721-729.
APA	Liu, Xiaoyuan.,Wang, Ke.,Zhou, Yang.,Tang, Xinyue.,Zhu, Xiuhui.,...&Liu, Baodan.(2019).In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation.APPLIED SURFACE SCIENCE,483,721-729.
MLA	Liu, Xiaoyuan,et al."In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation".APPLIED SURFACE SCIENCE 483(2019):721-729.