title: Function-Led Design of Aerogels: Self-Assembly of Alloyed PdNi Hollow Nanospheres for Efficient Electrocatalysis.
abstract: One plausible approach to endow aerogels with specific properties while preserving their other attributes is to fine-tune the building blocks. However, the preparation of metallic aerogels with designated properties, for example catalytically beneficial morphologies and transition-metal doping, still remains a challenge. Here, we report on the first aerogel electrocatalyst composed entirely of alloyed PdNi hollow nanospheres (HNSs) with controllable chemical composition and shell thickness. The combination of transition-metal doping, hollow building blocks, and the three-dimensional network structure make the PdNi HNS aerogels promising electrocatalysts for ethanol oxidation. The mass activity of the Pd83 Ni17 HNS aerogel is 5.6-fold higher than that of the commercial Pd/C catalyst. This work expands the exploitation of the electrocatalysis properties of aerogels through the morphology and composition control of its building blocks.
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/
authors.forename: Bin
authors.initials: B
authors.lastname: Cai
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/
authors.forename: Dan
authors.initials: D
authors.lastname: Wen
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/
authors.forename: Anne-Kristin
authors.initials: AK
authors.lastname: Herrmann
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/
authors.forename: Albrecht
authors.initials: A
authors.lastname: Benad
authors.affiliation: Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany) http://www.chm.tu-dresden.de/pc2/. alexander.eychmueller@chemie.tu-dresden.de.
authors.forename: Alexander
authors.initials: A
authors.lastname: Eychmüller
keywords: aerogels; electrocatalysis; nanostructures; self-assembly; sol-gel processes