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
ISSN1998-0124
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
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.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, X]的文章
[Wang, XX]的文章
[Liu, MC]的文章
百度学术
百度学术中相似的文章
[Li, X]的文章
[Wang, XX]的文章
[Liu, MC]的文章
必应学术
必应学术中相似的文章
[Li, X]的文章
[Wang, XX]的文章
[Liu, MC]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。