▎ 摘　　要

Au-Pd nanoparticles were deposited on the graphene oxide (GO) nanosheets to form Au-Pd/GO nanocomposites by simultaneously reducing AuCl4- and PdCl42- with GO without the use of any additional reductant. The Au-Pd/GO nanocomposites were used to fabricate dimensional Au-Pd/GO aerogels by a simple and green method, unidirectional freeze-drying method. The obtained Au-Pd/GO aerogel has an ordered porous architecture and shows high catalytic activity and good recyclability in a model reaction, reduction of 4-nitrophenol. (C) 2014 Elsevier Ltd. All rights reserved.