The uncapped Pt/reduced graphene oxide (RGO) composites are synthesized through reducing GO and Pt precursor simultaneously in acidic solution by Zn foil at room temperature. The Zn foils act as reducer and can be repeatable used for many cycles. RGO sheets arrange into porous structure with uniform Pt particles dispersing on it. The acquired catalyst shows excellent poisoning tolerance and long term stability while keeping the mass activity as roughly same level of the commercial Pt/C. However, additional experiments on high temperature products imply that arising reaction temperature may cause the deteriorating of catalyst performance. (C) 2014 Elsevier B.V. All rights reserved.