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|
| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
ELEC.P-473 |
| Subject |
Strong Metal-Support Interactions Enhance the Activity of Pd Supported MOx Electrocatalysts |
| Authors |
Wenjuan Shi, Hyun-Uk Park, Ah-Hyeon Park, Jong-Un Jung, Young-Uk Kwon*
Department of Chemistry, Sungkyunkwan University, Korea
|
| Abstract |
The present work reports a general approach to improve the electrocatalytic property of noble metal through regulating its electron status by introducing the strong metal- support interaction (SMSI). As a case study, carbon and metal oxide (Ga2O3, Al2O3, WO3) supported Pd nanoparticles were prepared by a sonochemical reaction in the presence of ethylene glycol. For the purpose of comparison, PdM alloys (M: Ga, Al, W) are also synthesized by a revising method. High resolution transmission electron microscopy (HRTEM) and X-ray microchemical analysis were used to characterize the composition, size and distribution of Pd nanoparticles. The electrochemical properties of the catalysts toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) were evaluated using cyclic voltammetry (CV) and chronoamperometry (CA) in 0.1 M KOH electrolyte. The higher catalytic activity for ORR and MOR was increased in the order Pd/MOx/C > PdM/C > Pd/C. The catalytic activity of Pd/MOx/C has been significantly promoted by stabilizing Pd species at the interface of the Pd-metal oxide support with the help of SMSI effect, suggesting an intrinsic advantage of Pd in driving ORR and MOR. |
| E-mail |
swjanna@126.com |
|
122nd General Meeting of the KCS