Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications

IMR OpenIR

	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
发表期刊	NANO RESEARCH
ISSN	1998-0124
卷号	11 期号:2 页码:780-790
摘要	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.; 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.
部门归属	[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
关键词	High-index Facets Oxygen Reduction Reaction Seed-mediated Synthesis Core-shell Nanocubes Bimetallic Nanocrystals Selective Hydrogenation Palladium Nanocrystals O-chloronitrobenzene Metal Nanocrystals Concave Nanocubes
学科领域	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
资助者	National 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]
收录类别	SCI
语种	英语
WOS记录号	WOS:000419959500018
引用统计	被引频次：65[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/321006/79555
专题	中国科学院金属研究所
通讯作者	Chen, 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.
推荐引用方式 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.