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Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis.
Hofer, Corinne J; Grass, Robert N; Schneider, Elia M; Hendriks, Lyndsey; Herzog, Antoine F; Zeltner, Martin; Günther, Detlef; Stark, Wendelin J.
Afiliação
  • Hofer CJ; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
  • Grass RN; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
  • Schneider EM; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
  • Hendriks L; Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland.
  • Herzog AF; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
  • Zeltner M; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
  • Günther D; Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland.
  • Stark WJ; Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland . Email: wendelin.stark@chem.ethz.ch.
Chem Sci ; 9(2): 362-367, 2018 Jan 14.
Article em En | MEDLINE | ID: mdl-29629105
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.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chem Sci Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chem Sci Ano de publicação: 2018 Tipo de documento: Article