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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.

SUBMITTER: Hofer CJ

PROVIDER: S-EPMC5868313 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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

Hofer Corinne J CJ Grass Robert N RN Schneider Elia M EM Hendriks Lyndsey L Herzog Antoine F AF Zeltner Martin M Günther Detlef D Stark Wendelin J WJ

Chemical science 20171030 2

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 <i>via</i> reducing flame spray synt ...[more]

PMID: 29629105

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