期刊
ACS NANO
卷 10, 期 2, 页码 2559-2567出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b07505
关键词
Au aerogels; nanoparticle assembly; dopamine; electrocatalysis; host-guest interaction; porous metal
类别
资金
- AEROCAT [ERC-2013-ADG 340419]
- DFG [GRK1401, EY16/10-2]
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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