Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis
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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000232085Publication status
publishedJournal / series
Chemical ScienceVolume
Pages / Article No.
Publisher
Royal Society of ChemistryOrganisational unit
03512 - Günther, Detlef / Günther, Detlef
03673 - Stark, Wendelin J. / Stark, Wendelin J.
08826 - Grass, Robert (Tit.-Prof.)
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