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Robust Phase Control through Hetero-Seeded Epitaxial Growth for Face-Centered Cubic Pt@Ru Nanotetrahedrons with Superior Hydrogen Electro-Oxidation Activity
Gu, Jun1; Guo, Yu1; Jiang, Ying-Ying2,3; Zhu, Wei1; Xu, Yan-Shuang1; Zhao, Ze-Qiong1; Liu, Jin-Xun4; Li, Wei-Xue4; Jin, Chuan-Hong2,3; Yan, Chun-Hua1; Zhang, Ya-Wen1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2015-08-06
DOI10.1021/acs.jpcc.5b04587
Volume119Issue:31Pages:17697-17706
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordCORE-SHELL NANOPARTICLES ; SINGLE-CRYSTAL SURFACES ; OXIDATION REACTION ; CARBON-MONOXIDE ; UNDERPOTENTIAL DEPOSITION ; RUTHENIUM NANOPARTICLES ; SHAPE CONTROL ; NOBLE-METALS ; ADSORPTION ; RU(0001)
AbstractControllable synthesis of metallic nanocrystals (NCs) with tunable phase, uniform shape, and size is of multidisciplinary interests but has still remained challenging. Herein, a robust phase control strategy is developed, in which seeds with a given phase are added to guide the epitaxial growth of the target metal to inherit the seeds phase. Through this strategy, M@Ru (M = Pt, Pd) NCs in the face-centered cubic (fcc) phase, a metastable phase for Ru under ambient conditions, were synthesized with the hydrothermal method. The Pt@Ru NCs showed not only the pure fcc phase but also high morphology selectivity to tetrahedrons surrounded by {111} facets. As revealed by density function theory (DFT) calculations, the preferentially epitaxial growth of Ru atom layers on the nonclosest-packed facets of hetero fcc metal seeds led to the formation of fcc Ru shells. Furthermore, the fcc Pt@Ru tetrahedrons/C showed electrocatalytic activity enhancement with more than an order of magnitude toward hydrogen oxidation reaction (HOR) in acidic electrolyte compared with hydrothermally synthesized Ru/C. Electrochemical measurement combined with DFT calculations revealed that the optimum HOR activity should be achieved on well-crystallized fcc Ru catalysts exposing maximum {111} facets.
Language英语
WOS IDWOS:000359332200024
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Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146462
Collection中国科学院大连化学物理研究所
Affiliation1.Peking Univ, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci,Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Zhejiang Univ, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
3.Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Gu, Jun,Guo, Yu,Jiang, Ying-Ying,et al. Robust Phase Control through Hetero-Seeded Epitaxial Growth for Face-Centered Cubic Pt@Ru Nanotetrahedrons with Superior Hydrogen Electro-Oxidation Activity[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(31):17697-17706.
APA Gu, Jun.,Guo, Yu.,Jiang, Ying-Ying.,Zhu, Wei.,Xu, Yan-Shuang.,...&Zhang, Ya-Wen.(2015).Robust Phase Control through Hetero-Seeded Epitaxial Growth for Face-Centered Cubic Pt@Ru Nanotetrahedrons with Superior Hydrogen Electro-Oxidation Activity.JOURNAL OF PHYSICAL CHEMISTRY C,119(31),17697-17706.
MLA Gu, Jun,et al."Robust Phase Control through Hetero-Seeded Epitaxial Growth for Face-Centered Cubic Pt@Ru Nanotetrahedrons with Superior Hydrogen Electro-Oxidation Activity".JOURNAL OF PHYSICAL CHEMISTRY C 119.31(2015):17697-17706.
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