title: Synthesis of Pt3Y and Other Early-Late Intermetallic Nanoparticles by Way of a Molten Reducing Agent.
abstract: Early-late intermetallic phases have garnered increased attention recently for their catalytic properties. To achieve the high surface areas needed for industrially relevant applications, these phases must be synthesized as nanoparticles in a scalable fashion. Herein, Pt3Y-targeted as a prototypical example of an early-late intermetallic-has been synthesized as nanoparticles approximately 5-20 nm in diameter via a solution process and characterized by XRD, TEM, EDS, and XPS. The key development is the use of a molten borohydride (MEt3BH, M = Na, K) as both the reducing agent and reaction medium. Readily available halide precursors of the two metals are used. Accordingly, no organic ligands are necessary, as the resulting halide salt byproduct prevents sintering, which further permits dispersion of the nanoscale intermetallic onto a support. The versatility of this approach was validated by the synthesis of other intermetallic phases such as Pt3Sc, Pt3Lu, Pt2Na, and Au2Y.
authors.affiliation: Department of Chemistry, University of California , Berkeley, California 94720, United States.|California Research Alliance by BASF, University of California , Berkeley, California 94720, United States.
authors.forename: Jacob S
authors.identifier: 0000-0002-6678-6718
authors.initials: JS
authors.lastname: Kanady
authors.affiliation: BASF SE , 67056 Ludwigshafen am Rhein, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Leidinger
authors.affiliation: BASF SE , 67056 Ludwigshafen am Rhein, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Haas
authors.affiliation: hte GmbH - a subsidiary of BASF , 69123 Heidelberg, Germany.
authors.forename: Sven
authors.initials: S
authors.lastname: Titlbach
authors.affiliation: hte GmbH - a subsidiary of BASF , 69123 Heidelberg, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Schunk
authors.affiliation: California Research Alliance by BASF, University of California , Berkeley, California 94720, United States.|BASF SE , 67056 Ludwigshafen am Rhein, Germany.
authors.forename: Kerstin
authors.initials: K
authors.lastname: Schierle-Arndt
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Ethan J
authors.identifier: 0000-0003-3132-190X
authors.initials: EJ
authors.lastname: Crumlin
authors.affiliation: Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Cheng Hao
authors.identifier: 0000-0002-6515-0988
authors.initials: CH
authors.lastname: Wu
authors.affiliation: Department of Chemistry, University of California , Berkeley, California 94720, United States.|Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.|Kavli Energy NanoScience Institute , Berkeley, California 94720, United States.|Department of Materials Science and Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: A Paul
authors.identifier: 0000-0001-6895-9048
authors.initials: AP
authors.lastname: Alivisatos