▎ 摘　　要

An intelligent amphoteric surfactant (sodium lauryl aminopropionate) was introduced to the construction of 3D graphene micro/nanoclusters, which was used to the synthesis of platinum nanoparticles to obtain the Pt/3D graphene micro/nanocomposite. Owing to the unique pH induced charge transition and micellar arranging property of the amphoteric surfactant, a higher-order assembly of 3D porous graphene-based architectures from stacked graphene oxide layers can be readily achieved. More importantly, the as-made catalyst Pt/3D graphene exhibits unprecedented activity, excellent CO tolerance and good stability towards methanol oxidation which can be attributed to the large surface area, efficient mass transport within the composite and the uniform distribution of small Pt NPs. These outstanding electrochemical properties make Pt/3D graphene a promising catalyst applied in direct methanol fuel cells. (C) 2015 Elsevier Ltd. All rights reserved.