Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis. Issue 2 (7th November 2017)

• Record Type: Journal Article
• Authors: Hofer, Corinne J.; Grass, Robert N.; Schneider, Elia M.; Hendriks, Lyndsey; Herzog, Antoine F.; Zeltner, Martin; Günther, Detlef; Stark, Wendelin J.
• Is Part Of: Chemical science. Volume 9:Issue 2(2018)
• Page Start: 362
• Page End: 367
• Publication Date: 2017-11-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7sc03785f
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : Surface-functionalized hollow carbon nanobubbles containing platinum in their interior perform 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.