摘要
制备了Pt ZrO2/C催化剂,采用TEM,XRD等技术对其进行表征.利用循环伏安和电化学阻抗谱等方法研究Pt ZrO2/C催化剂在碱性溶液中对乙醇氧化的电化学活性,并与Pt/C催化剂(20%Pt,E TEK)进行对比.研究结果表明,Pt ZrO2/C催化剂具有较高的乙醇电氧化催化活性.电流密度最高的是n(Pt)∶n(ZrO2)为1∶1的样品,该比值为1∶4时显示出最低乙醇氧化峰电势.
Pt- ZrO2/C catalyst was prepared and characterized by TEM and XRD. The electrochemical activity of Pt- ZrO2/C catalyst for ethanol oxidation was investigated by using cyclic voltammetry and electrochemical impedance spectroscopy in alkaline solutions and compared with Pt/C (20 % Pt, E-TEK). The results showed that Pt- ZrO2/C gave higher catalytic activity for ethanol electro-oxidation. The highest current density was obtained at Pt/ZrO2 molar ratio with 1 : 1 and the lower peak potential appeared when the Pt/ZrO2 molar ratio was 1:4.
出处
《河北师范大学学报(自然科学版)》
CAS
北大核心
2007年第1期68-72,共5页
Journal of Hebei Normal University:Natural Science
基金
国家自然科学基金(90410002)