摘要
The processes of adsorption and oxidation of glycerol on Pt, Pt/Sbad and Pt/Sad electrodes were studied by using Cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM). The results demonstrated that the oxidation of glycerol depended strongly on oxidation states of electrode surface. Sb adatoms on Pt surface can adsorb oxygen at relatively low potentials, and exhibit catalytic effects for glycerol oxidation. In contrast to Pt electrodes, the oxidation peak potential of glycerol on Pt surface modified with Sb in saturation was negatively shifted by about 140 mV. In a contrary, the oxidation of S adatoms consumes oxygen species of Pt electrode surface. As a consequence, the oxidation of glycerol was inhibited on Pt surface modified with Sb in saturation. The EQCM studies provided quantitative results of surface mass variation during glycerol oxidation, and have thrown new light in elucidating different effects of adatoms Sbad and Sad on Pt electrode surface towards glycerol oxidation.
The processes of adsorption and oxidation of glycerol on Pt, Pt/Sbad and Pt/Sad electrodes were studied by using Cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM). The results demonstrated that the oxidation of glycerol depended strongly on oxidation states of electrode surface. Sb adatoms on Pt surface can adsorb oxygen at relatively low potentials, and exhibit catalytic effects for glycerol oxidation. In contrast to Pt electrodes, the oxidation peak potential of glycerol on Pt surf...
出处
《厦门大学学报(自然科学版)》
CAS
CSCD
北大核心
2002年第S1期50-,共1页
Journal of Xiamen University:Natural Science
基金
ProjectsupportedbyTheFoundationfortheAuthorofNationalExcellentDoctoralDissertationofChina (2 0 0 1 3 1 )