A General Concurrent Template Strategy for Ordered Mesoporous Intermetallic Nanoparticles with Controllable Catalytic Performance. (2nd March 2022)

• Record Type: Journal Article
• Authors: Lv, Hao; Qin, Huaiyu; Ariga, Katsuhiko; Yamauchi, Yusuke; Liu, Ben
• Is Part Of: Angewandte Chemie. Volume 134:Number 17(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-03-02
• Subjects: Hydrogenation -- Intermetallic Nanoparticles -- Mesoporous Metals -- Selective Catalysis -- Template Synthesis; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202116179
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: We report a general concurrent template strategy for precise synthesis of mesoporous Pt‐/Pd‐based intermetallic nanoparticles with desired morphology and ordered mesostructure. The concurrent template not only supplies a mesoporous metal seed for re‐crystallization growth of atomically ordered intermetallic phases with unique atomic stoichiometry but also provides a nanoconfinement environment for nanocasting synthesis of mesoporous nanoparticles with ordered mesostructure and rhombic dodecahedral morphology under elevated temperature. Using the selective hydrogenation of 3‐nitrophenylacetylene as a proof‐of‐concept catalytic reaction, mesoporous intermetallic PtSn nanoparticles exhibited remarkably controllable intermetallic phase‐dependent catalytic selectivity and excellent catalytic stability. This work provides a very powerful strategy for precise preparation of ordered mesoporous intermetallic nanocrystals for application in selective catalysis and fuel cell electrocatalysis. Abstract : A general concurrent template strategy was reported for precise synthesis of mesoporous intermetallic nanoparticles with desired morphology, ordered mesostructure, and controlled intermetallic phases. The resultant mesoporous intermetallic PtSn nanoparticles exhibited the phase‐dependent selectivity and excellent stability for selective hydrogenation of 3‐nitrophenylacetylene.