Gold Aerogels: Three-Dimensional Assembly of Nanoparticles and Their Use as Electrocatalytic Interfaces | Zendy

Dan Wen | Zendy; Wei Liu | Zendy; Danny Haubold | Zendy; Chengzhou Zhu | Zendy; Martin Oschatz | Zendy; Matthias Holzschuh | Zendy; André Wolf | Zendy; Frank Simon | Zendy; Stefan Kaskel | Zendy; Alexander Eychmüller | Zendy

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Gold Aerogels: Three-Dimensional Assembly of Nanoparticles and Their Use as Electrocatalytic Interfaces

Author(s) -

Dan Wen,

Wei Liu,

Danny Haubold,

Chengzhou Zhu,

Martin Oschatz,

Matthias Holzschuh,

André Wolf,

Frank Simon,

Stefan Kaskel,

Alexander Eychmüller

Publication year - 2016

Publication title -

acs nano

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.554

H-Index - 382

eISSN - 1936-086X

pISSN - 1936-0851

DOI - 10.1021/acsnano.5b07505

Subject(s) - aerogel , materials science , porosity , nanotechnology , electrocatalyst , nanoparticle , supercritical fluid , nanostructure , nanowire , self assembly , template , metal , chemical engineering , electrochemistry , electrode , composite material , chemistry , organic chemistry , engineering , metallurgy

Three-dimensional (3D) porous metal nanostructures have been a long sought-after class of materials due to their collective properties and widespread applications. In this study, we report on a facile and versatile strategy for the formation of Au hydrogel networks involving the dopamine-induced 3D assembly of Au nanoparticles. Following supercritical drying, the resulting Au aerogels exhibit high surface areas and porosity. They are all composed of porous nanowire networks reflecting in their diameters those of the original particles (5-6 nm) via electron microscopy. Furthermore, electrocatalytic tests were carried out in the oxidation of some small molecules with Au aerogels tailored by different functional groups. The beta-cyclodextrin-modified Au aerogel, with a host-guest effect, represents a unique class of porous metal materials of considerable interest and promising applications for electrocatalysis.

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