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Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition
Cao, K; Shi, L; Gong, M; Cai, JM; Liu, X; Chu, SQ; Lang, Y; Shan, B; Chen, R; Chu SQ(储胜启)
2017
Source PublicationSMALL
ISSN1613-6810
EISSN1613-6829
Volume13Issue:32Pages:1700648
SubtypeArticle
AbstractA facet-selective atomic layer deposition method is developed to fabricate oxide nanofence structure to stabilize Pt nanoparticles. CeOx is selectively deposited on Pt nanoparticles' (111) facets and naturally exposes Pt (100) facets. The facet selectivity is realized through different binding energies of Ce precursor fragments chemisorbed on Pt (111) and Pt (100), which is supported by in situ mass gain experiment and corroborated by density functional theory simulations. Such nanofence structure not only has exposed Pt active facets for carbon monoxide oxidation but also forms ceria-metal interfaces that are beneficial for activity enhancement. The composite catalysts show excellent sintering resistance up to 700 degrees C calcination. CeOx anchors Pt nanoparticles with a strong metal oxide interaction, and nanofence structure around Pt nanoparticles provides physical blocking that suppresses particles migration. The study reveals that forming oxide nanofence structure to encapsulate precious metal nanoparticles is an effective way to simultaneously enhance catalytic activity and thermal stability.
DOI10.1002/smll.201700648
WOS KeywordCORE-SHELL NANOPARTICLES ; SINGLE-ATOM ; METAL NANOPARTICLES ; SUPPORT INTERACTION ; OXYGEN REDUCTION ; CERIA CATALYSTS ; MODEL CATALYSTS ; OXIDATION ; PD ; HYDROGENATION
Indexed BySCI ; EI ; PUBMED ; SCOPUS
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000408012900001
EI Accession Number20172703878409
EI KeywordsAtomic layer deposition - Atoms - Binding energy - Carbon monoxide - Catalyst activity - Cerium oxide - Density functional theory - Metal nanoparticles - Platinum metals - Sintering
EI Classification Number547.1 Precious Metals - 761 Nanotechnology - 801.4 Physical Chemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 813.1 Coating Techniques - 931.3 Atomic and Molecular Physics
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285146
Collection多学科研究中心
粒子天体物理中心
理论物理室
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Cao, K,Shi, L,Gong, M,et al. Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition[J]. SMALL,2017,13(32):1700648.
APA Cao, K.,Shi, L.,Gong, M.,Cai, JM.,Liu, X.,...&储胜启.(2017).Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition.SMALL,13(32),1700648.
MLA Cao, K,et al."Nanofence Stabilized Platinum Nanoparticles Catalyst via Facet-Selective Atomic Layer Deposition".SMALL 13.32(2017):1700648.
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