Preparation of Ru-doped SnO2-supported Pt catalysts and their electrocatalytic properties for methanol oxidation.
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.
Pang
H L
HL
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
Zhang
X H
XH
Zhong
X X
XX
Liu
B
B
Wei
X G
XG
Kuang
Y F
YF
Chen
J H
JH
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*
D017971:Tin Compounds; D010984:Platinum; D012428:Ruthenium; C045358:stannic oxide; D000432:Methanol