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Issue 20, 2013
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Double shelled hollow nanospheres with dual noble metal nanoparticle encapsulation for enhanced catalytic application

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Abstract

We report the design and realization of double shelled @CeO2/M@M/TiO2 (M = Au and/or Pd) nanospheres with dual noble metal nanoparticles encapsulated in metal oxide shells via a layer-by-layer deposition process followed by an alkali etching method. The resulting nanospheres possess uniform sizes, variable shell components and thicknesses, adjustable noble metal nanoparticles encapsulated, regulable chamber spaces between the two shells, and good structural stability, which can be used as unique microreactors with extremely high catalytic activity and stability in the Suzuki–Miyaura coupling reaction, benzyl aerobic alcohol oxidation, and 4-nitrophenol reduction reaction due to their structural features with multiple interactions and strong synergistic effects between the noble metal nanoparticles and metal oxide shells, and less depletion of catalytic active species. The designed double shelled hollow @CeO2/M@M/TiO2 nanocatalysts can be used as novel catalyst systems with highly efficient catalytic performance for various catalytic reactions depending on their shell components and noble metal nanoparticles encapsulated. The synthetic strategy provides a new methodology to design high-performance and multifunctional nanocatalysts.

Graphical abstract: Double shelled hollow nanospheres with dual noble metal nanoparticle encapsulation for enhanced catalytic application

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Publication details

The article was received on 27 May 2013, accepted on 17 Jul 2013 and first published on 25 Jul 2013


Article type: Paper
DOI: 10.1039/C3NR02759G
Nanoscale, 2013,5, 9747-9757

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    Double shelled hollow nanospheres with dual noble metal nanoparticle encapsulation for enhanced catalytic application

    B. Liu, Q. Wang, S. Yu, T. Zhao, J. Han, P. Jing, W. Hu, L. Liu, J. Zhang, L. Sun and C. Yan, Nanoscale, 2013, 5, 9747
    DOI: 10.1039/C3NR02759G

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