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Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications
Li, X; Wang, XX; Liu, MC; Liu, HY; Chen, Q; Yin, YD; Jin, MS; Jin, MS (reprint author), Xi An Jiao Tong Univ, Sch Chem Engn & Technol, FIST, Xian 710049, Shaanxi, Peoples R China.; Jin, MS (reprint author), Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China.; Chen, Q (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.
2018-02-01
Source PublicationNANO RESEARCH
ISSN1998-0124
Volume11Issue:2Pages:780-790
AbstractThe fabrication of ultrathin alloy shells as heterogeneous catalysts to increase the utilization efficiency and enhance the catalytic activity of metal atoms has been recognized as an effective method for the construction of efficient metal nanocatalysts, particularly noble-metal nanocatalysts. In this study, we demonstrate the successful formation of Pd-M (M = Ni, Ag, Cu) alloy shells with a tunable thickness on preformed nanoscale Pd seeds. The success of this synthesis mainly relies on the combination of the slow reduction of "M" ions and the subsequent diffusion of M ad-atoms into the surface lattice of Pd seeds. The composition of the Pd-M alloy shell is easily tuned by changing the type and amount of the added precursor, and the shell thickness is manipulated according to the reaction time. More significantly, the surface structure of these alloy shells is maintained after the reaction, implying that any desired surface structure of Pd-M alloy shells can be prepared by using the appropriate starting materials. Further catalytic evaluation of the hydrogenation of chloronitrobenzenes shows that these alloy surfaces exhibit significantly improved selectivity compared to the Pd seeds. The Pd-Ni alloy surfaces exhibit much better catalytic selectivity (as high as > 99%) than Pd catalysts.; The fabrication of ultrathin alloy shells as heterogeneous catalysts to increase the utilization efficiency and enhance the catalytic activity of metal atoms has been recognized as an effective method for the construction of efficient metal nanocatalysts, particularly noble-metal nanocatalysts. In this study, we demonstrate the successful formation of Pd-M (M = Ni, Ag, Cu) alloy shells with a tunable thickness on preformed nanoscale Pd seeds. The success of this synthesis mainly relies on the combination of the slow reduction of "M" ions and the subsequent diffusion of M ad-atoms into the surface lattice of Pd seeds. The composition of the Pd-M alloy shell is easily tuned by changing the type and amount of the added precursor, and the shell thickness is manipulated according to the reaction time. More significantly, the surface structure of these alloy shells is maintained after the reaction, implying that any desired surface structure of Pd-M alloy shells can be prepared by using the appropriate starting materials. Further catalytic evaluation of the hydrogenation of chloronitrobenzenes shows that these alloy surfaces exhibit significantly improved selectivity compared to the Pd seeds. The Pd-Ni alloy surfaces exhibit much better catalytic selectivity (as high as > 99%) than Pd catalysts.
description.department[li, xiang ; wang, xixi ; liu, maochang ; chen, qiang ; jin, mingshang] xi an jiao tong univ, sch chem engn & technol, fist, xian 710049, shaanxi, peoples r china ; [li, xiang ; wang, xixi ; liu, maochang ; chen, qiang ; jin, mingshang] xi an jiao tong univ, state key lab multiphase flow power engn, xian 710049, shaanxi, peoples r china ; [liu, hongyang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [chen, qiang] beijing univ chem technol, state key lab chem resource engn, beijing 100029, peoples r china ; [yin, yadong] univ calif riverside, dept chem, riverside, ca 92521 usa
KeywordHigh-index Facets Oxygen Reduction Reaction Seed-mediated Synthesis Core-shell Nanocubes Bimetallic Nanocrystals Selective Hydrogenation Palladium Nanocrystals O-chloronitrobenzene Metal Nanocrystals Concave Nanocubes
Subject AreaChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Natural Science Foundation of China [21471123, 21403160]; Xi'an Jiaotong University; China Postdoctoral Science Foundation [2015M582634]; Fundamental Research Funds for the Central Universities; State Key Laboratory of Chemical Resource Engineering; U. S. National Science Foundation [CHE-1308587]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79555
Collection中国科学院金属研究所
Corresponding AuthorChen, Q; Jin, MS (reprint author), Xi An Jiao Tong Univ, Sch Chem Engn & Technol, FIST, Xian 710049, Shaanxi, Peoples R China.; Jin, MS (reprint author), Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China.; Chen, Q (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.
Recommended Citation
GB/T 7714
Li, X,Wang, XX,Liu, MC,et al. Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications[J]. NANO RESEARCH,2018,11(2):780-790.
APA Li, X.,Wang, XX.,Liu, MC.,Liu, HY.,Chen, Q.,...&Chen, Q .(2018).Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications.NANO RESEARCH,11(2),780-790.
MLA Li, X,et al."Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications".NANO RESEARCH 11.2(2018):780-790.
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