One-pot organometallic synthesis of alumina-embedded Pd nanoparticles

Author(s)

Costa, Natalia J. S. ^{[1, 2]} ; Vono, Lucas L. R. ^{[1, 2]} ; Wojcieszak, Robert ^[3] ; Teixiera-Neto, Erico ^[4] ; Philippot, Karine ^[2] ; Rossi, Liane M. ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[2] CNRS, LCC, 205 Route Narbonne, BP44099, F-31077 Toulouse 4 - France

^[3] Univ Lille, CNRS, Cent Lille, ENSCL, Univ Artois, UMR 8181, UCCS, Unite Catalyse &, F-59000 Lille - France

^[4] LNNano CNPEM, Lab Microscopia Eletron, Caixa Postal 6192, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: DALTON TRANSACTIONS; v. 46, n. 41, p. 14318-14324, NOV 7 2017.
• Web of Science Citations: 0

Abstract

Herein we report a one pot organometallic strategy to access alumina-embedded Pd nanoparticles. Unexpectedly, the decomposition of the organometallic complex tris(dibenzylideneacetone) dipalladium(0), Pd-2(dba)(3), by dihydrogen in the presence of aluminum isopropoxide, Al(iPrO)(3), and without extra stabilizers, was found to be an efficient method to generate a Pd colloidal solution. Careful characterization studies revealed that the so-obtained Pd nanoparticles were stabilized by an aluminum isopropoxide tetramer and 1,5-diphenyl-pentan-3-one, which was produced after reduction of the dba ligand from the organometallic precursor. Moreover, calcination of the obtained nanomaterial in air at 773 K for 2 h resulted in a nanocomposite material containing Pd nanoparticles embedded in Al2O3. This stabilization strategy opens new possibilities for the preparation of transition metal nanoparticles embedded in oxides. (AU)

• FAPESP's process: 12/19501-7 - Design of palladium nanocatalysts for selective oxidation of 5-hydroxymethylfurfural
• Grantee: Natália de Jesus da Silva Costa
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 13/11298-0 - Morphology and morphogenesis of bimetallic heterogeneous catalysts with planned architectures
• Grantee: Érico Teixeira Neto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/10469-3 - Design of nanocatalysts coated by oxides for synthesis of important biobased products.
• Grantee: Natália de Jesus da Silva Costa
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 14/15159-8 - Metal nanoparticles: challenges on the preparation, stabilization and activation for catalysis
• Grantee: Liane Marcia Rossi
• Support Opportunities: Regular Research Grants