title: Preparation of Ru-doped SnO2-supported Pt catalysts and their electrocatalytic properties for methanol oxidation.
abstract: Ru-doped SnO2 nanoparticles were prepared by chemical precipitation and calcinations at 823 K. Due to high stability in diluted acidic solution, Ru-doped SnO2 nanoparticles were selected as the catalyst support and second catalyst for methanol electrooxidation. The micrograph, elemental composition, and structure of the Ru-doped SnO2 nanoparticles were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction, respectively. The electrocatalytic properties of the Ru-doped SnO2-supported Pt catalyst (Pt/Ru-doped SnO2) for methanol oxidation have been investigated by cyclic voltammetry. Under the same loading mass of Pt, the Pt/Ru-doped SnO2 catalyst shows better electrocatalytic performance than the Pt/SnO2 catalyst and the best atomic ratio of Ru to Sn in Ru-doped SnO2 is 1/75. Additionally, the Pt/Ru-doped SnO2 catalyst possesses good long-term cycle stability.
authors: State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
authors: H L
authors: HL
authors: Pang
authors: X H
authors: XH
authors: Zhang
authors: X X
authors: XX
authors: Zhong
authors: B
authors: B
authors: Liu
authors: X G
authors: XG
authors: Wei
authors: Y F
authors: YF
authors: Kuang
authors: J H
authors: JH
authors: Chen
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D000432:Methanol / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D017971:Tin Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D017971:Tin Compounds; D010984:Platinum; D012428:Ruthenium; C045358:stannic oxide; D000432:Methanol