Open AccessBimetallic Pd/Sn‐based Nanoparticles and their Catalytic Properties in the Semihydrogenation of Diphenylacetylene
Author(s) -
Dietrich Christine,
Chen Si,
Uzunidis Georgios,
Hähsler Martin,
Träutlein Yannick,
Behrens Silke
Publication year - 2021
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.202000298
Subject(s) - diphenylacetylene , bimetallic strip , catalysis , nanoparticle , ionic liquid , materials science , intermetallic , chemical engineering , nanocrystal , chemistry , nanotechnology , organic chemistry , alloy , engineering
Multimetallic nanoparticles often enhance the catalytic performance of their monometallic counterparts by increasing reaction rates, catalyst selectivity, and/or stability. A prerequisite for understanding structure‐ and composition‐associated properties, however, is the careful design of multimetallic nanoparticles with various structures and compositions. Here, bimetallic Pd/Sn‐based nanoparticles are prepared with a tunable composition and structure exploiting ionic liquids (ILs) as reaction medium (i. e., methyltrioctylammonium bis(trifluoromethylsulfonyl)imide). The nanoparticles are obtained in a one‐pot synthetic procedure by reducing the metal salt precursors with triethylborohydride in the IL. The results show that the reaction parameters, in particular the nature and ratio of the Pd 2+ /Sn 2+ precursors as well as the reaction temperature, influence NP formation and composition. X‐ray diffraction with Rietveld analysis and transmission electron microscopy are employed to determine NP size and phase composition. Under optimized reaction conditions Pd 2 Sn or PdSn nanocrystals are formed as single‐phase products after introducing an additional annealing step at 200 °C. Nanocrystals with intermetallic composition reveal enhanced catalytic properties in the semihydrogenation of diphenylacetylene which was used as a model reaction.