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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 The GOs supported Pt nanoparticles with high activity and stability for hydrazine electro-oxidation in a strong acidic solution

2017년 8월 23일 11시 09분 25초
ELEC.P-456 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 20일 (금요일) 13:00~14:30
저자 및
Jidang Kim, Hyun Chul Choi*
Department of Chemistry, Chonnam National University, Korea
Pt nanoparticles have been particularly recognized as among the most promising catalysts for fuel cell applications because of their outstanding catalytic activity. However, the high prices and limited abundance of Pt resources hinder its commercial applications. Thus, Pt nanoparticles are generally used in a carbon-supported form (Pt/C catalyst) because of the cost reduction and increase in activity. However, the catalytic performances of Pt/C catalysts usually decline gradually due to their degradation under harsh operating conditions; the major reasons for Pt/C catalyst degradation are Pt dissolution and corrosion of the carbon support. Therefore, the development of Pt catalysts offering high activity, stability, and recyclability is currently a very popular research focus. In this study, we report a simple and effective process to prepare Pt nanoparticles-decorated GOs by using the amidation method on GOs surfaces. Amine groups were utilized as linkers to secure the Pt nanoparticles without agglomeration. The sample was characterized by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The Pt nanoparticles decorated GOs exhibits higher activity in electrochemical reactions of hydrazine oxidation in a strong acidic solution than that of the reference systems. This synthetic approach should be broadly applicable for preparing GO-supported metal catalysts and markedly improves the catalytic activity.