Synthesis of surface controlled nickel/palladium hydride nanodendrites with high performance in benzyl alcohol oxidation

作     者：Zipeng Zhao Michelle M.Flores Espinosa Jihan Zhou Wang Xue Xiangfeng Duan Jianwei Miao Yu Huang 

作者机构：Department of Materials Science and EngineeringUniversity of CaliforniaLos AngelesCA 90095USA Department of Physics and AstronomyUniversity of CaliforniaLos AngelesCA 90095USA Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCA 90095USA California Nanosystems InstituteUniversity of CaliforniaLos AngelesCA 90095USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2019年第12卷第6期

页      面：1467-1472页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：support from Office of Naval Research by the grant number the support from Office of Basic Energy Sciences of the US DOE The HAADF-STEM imaging and EDS mapping with Titan X were performed at the Molecular Foundry supported by the Office of Science, Office of Basic Energy Sciences of the U.S. DOE under Contract 

主　　题：benzyl alcohol selectivity benzaldehyde palladium hydride oxidation nanodendrites 

摘      要：Benzaldehyde byproduct is an imperative intermediate in the production of fine chemicals and additives.Tuning selectivity to benzaldehyde is therefore critical in alcohol oxidation reactions at the industrial level.Herein,we report a simple but innovative method for the synthesis of palladium hydride and nickel palladium hydride nanodendrites with controllable morphology,high stability,and excellent catalytic activity.The synthesized dendrites can maintain the palladium hydride phase even after their use in the chosen catalytic reaction.Remarkably,the high surface area morphology and unique interaction between nickel-rich surface and palladium hydride (β-phase) of these nanodendrites are translated in an enhanced catalytic activity for benzyl alcohol oxidation reaction.Our Ni/PdH0.43 nanodendrites demonstrated a high selectivity towards benzaldehyde of about 92.0% with a conversion rate of 95.4%,showing higher catalytic selectivity than their PdH0.43 counterparts and commercial Pd/C.The present study opens the door for further exploration of metal/metal-hydride nanostructures as next-generation catalytic materials.