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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Shape-dependent electrocatalytic behavior of Pd nanoparticles for the cathodic reduction of oxygen

2017년 8월 23일 16시 46분 20초
ELEC.P-465 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 20일 (금요일) 13:00~14:30
저자 및
Anh.T.N Nguyen, Nayun Jung, JUN HO SHIM*
Department of Chemistry, Daegu University, Korea
Precious metal nanocrystals play an important role in many industrial applications, such as catalysis, medicine, electronics, etc. In all of these applications, the size and shape of metal nanocrystals are critical parameters that must be controlled to maximize their value. In this study, we report an efficient synthesis of size and shape-controlled Pd nanostructure in an aqueous solution and their electrocatalytic activity for oxygen reduction reaction (ORR). The proposed synthesis was examined using L-ascorbic acid as a reducing agent of Pd2+ in the presence of both a stabilizer and a capping agent such as Pluronic F127. The resultant Pd nanoparticles have three different shapes, while their sizes can be controlled by using Pluronic F127 : KBr with different aspect ratios. Apart from this, a fine control of the nanoparticle shape can be achieved by the systematic variation of the experimental parameters. The structure, morphology and electrocatalytic activity of the Pd nanostructures is characterized by transmission electron microscopy (TEM) and electrochemical analyzer. This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B03930895).