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A synthetic strategy for carbon nanospheres impregnated with highly monodispersed metal nanoparticles

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journal contribution
posted on 2024-05-30, 10:25 authored by T Yang, H Ling, JF Lamonier, M Jaroniec, J Huang, MJ Monteiro, J Liu
N-doped mesoporous carbon nanospheres (N-MCN@M) impregnated with uniformly dispersed noble-metal (Au, Pt, Rh, Ru, Ag, Pd and Ir) nanoparticles are rationally designed and synthesized for hydrogenation reactions. This facile and generally applicable synthetic strategy ensured confinement of the noble-metal nanoparticles within different carbon morphologies, including mesoporous spheres, hollow particles and core-shell particles. High loading of the noble-metal nanoparticles from 8 to 44% was accomplished by tuning the initial concentration of metal salts. Even at very high loadings (> 40 wt%), a homogeneous dispersion of uniform metal nanoparticles throughout the carbon nanostructures was achieved. The proposed synthesis is also well suited for the fabrication of carbon spheres loaded with bimetallic nanoparticles (AuPt, AuRh and PtRh). Examination of these metal-loaded carbon particles as catalysts for the hydrogenation of benzaldehyde gave 100% selectivity toward carbonyl group at room and higher reaction temperatures. The outstanding performance of Au nanoparticles gave an unprecedented turn over frequency 2-4 times greater than those of Pt nanoparticles with the same size, loading and support.

History

Journal

NPG Asia Materials

Volume

8

Article number

ARTN e240

Pagination

1-7

Location

London, Eng.

Open access

  • Yes

ISSN

1884-4057

eISSN

1884-4057

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2016 NPG Asia Materials

Issue

2

Publisher

Nature Publishing Group