高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (1): 110.doi: 10.7503/cjcu20130504

• 物理化学 • 上一篇    下一篇

Co3O4纳米片的制备及对H2O2电还原反应的催化性能

程魁, 杨帆, 闫鹏, 曹殿学, 殷金玲, 王贵领()   

  1. 哈尔滨工程大学材料科学与化学工程学院, 哈尔滨 150001
  • 收稿日期:2013-05-29 出版日期:2014-01-10 发布日期:2013-09-02
  • 作者简介:联系人简介: 王贵领, 男, 博士, 教授, 博士生导师, 主要从事燃料电池、 锂离子电池和超级电容器电极材料研究.E-mail: wangguiling@hrbeu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21306033)和中央高校基本科研基金(批准号: HEUCF2013091003)资助

Preparation of Co3O4 Nanosheet Supported on Ni Foam and Its Catalytic Performance for H2O2 Electroreduction

CHENG Kui, YANG Fan, YAN Peng, CAO Dianxue, YIN Jinling, WANG Guiling*()   

  1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2013-05-29 Online:2014-01-10 Published:2013-09-02
  • Contact: WANG Guiling E-mail:wangguiling@hrbeu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21306033) and the Fundamental Research Funds for the Central Universities of China(No.HEUCF20130910013)

摘要:

通过恒电势电沉积和加热处理在泡沫镍基体上制备了Co3O4纳米片. 利用扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 X射线衍射(XRD)、 傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)等手段对纳米片的形貌和结构进行了表征. 采用线性伏安扫描和计时电流技术研究了Co3O4纳米片电极对H2O2的电还原性能. 结果表明, 在3.0 mol/L KOH 和 0.4 mol/L H2O2溶液中, 当电压为-0.4 V(vs. Ag/AgCl)时, 线性伏安扫描电流密度达到-0.386 A/cm2, 在1000 s 测试时间内, 计时电流密度衰减很小, 表明Co3O4纳米片电极对H2O2具有很高的活性和稳定性.

关键词: 四氧化三钴, 纳米片, 电沉积, 过氧化氢, 电还原

Abstract:

Ni foam supported Co3O4 nanosheet(Co3O4/Ni foam) electrode was prepared by electrodeposition, followed by a thermal treatment in air. The nanosheet was characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD), X-ray photoelectron spectrometry(XPS) and Fourier transform infrared spectrometry(FTIR). The catalytic performance of the obtained electrode for H2O2 electroreduction in KOH solution was evaluated by means of linear scan voltammetry and chronoamperometry. The results show a current density of 0.386 A/cm2 in the solution containing 3.0 mol/L KOH and 0.4 mol/L H2O2 at -0.4 V(vs. Ag/AgCl). The chronoamperometric current densities remain nearly constant with a 1000 s test. The results indicate that Co3O4/Ni foam has considerable activity and stability for H2O2 electroreduction.

Key words: Co3O4, Nanosheet, Electrodeposition, H2O2, Electroreduction

中图分类号: 

TrendMD: