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Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis

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Abstract

Selective dealloying of metal nanoparticles results in rattle-type hollow carbon nanoshells enclosing platinum nanoparticles, which are able to perform size-selective catalysis. Selective functionalization of the outer graphene-like carbon surface prevents agglomeration and leads to well dispersible nanocatalysts in aqueous solutions. The synthesis starts with the production of nanoparticles with a cobalt–platinum-alloy core surrounded by graphene-like carbon via reducing flame spray synthesis. After surface functionalization, simultaneous pore formation in the shell-wall and dissolution of the cobalt results in platinum encapsulated in hollow carbon nanospheres. Catalytic oxidation of differently sized sugars (glucose and maltoheptaose) reveales size-selective catalytic properties of these platinum nanorattles.

Graphical abstract: Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis

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Publication details

The article was received on 29 Aug 2017, accepted on 27 Oct 2017 and first published on 30 Oct 2017


Article type: Edge Article
DOI: 10.1039/C7SC03785F
Citation: Chem. Sci., 2018, Advance Article
  • Open access: Creative Commons BY license
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    Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis

    C. J. Hofer, R. N. Grass, E. M. Schneider, L. Hendriks, A. F. Herzog, M. Zeltner, D. Günther and W. J. Stark, Chem. Sci., 2018, Advance Article , DOI: 10.1039/C7SC03785F

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