催化学报

催化学报 ›› 2015, Vol. 36 ›› Issue (2): 216-220.DOI: 10.1016/S1872-2067(14)60207-2

• 论文 • 上一篇    下一篇

Improved hydrogen evolution on glassy carbon electrode modified with novel Pt/cetyltrimethylammonium bromide nanoscale aggregates

Jahan-Bakhsh Raoofa, Sayed Reza Hosseinib, Seyedeh Zeinab Mousavi-Sania   

  1. a Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, 47416-95447, Babolsar, Iran;
    b Nanochemistry Research Laboratory, Faculty of Chemistry, University of Mazandaran, 47416-95447, Babolsar, Iran
  • 收稿日期:2014-06-26 修回日期:2014-08-11 出版日期:2015-01-21 发布日期:2015-01-21
  • 通讯作者: Jahan-Bakhsh Raoof

Improved hydrogen evolution on glassy carbon electrode modified with novel Pt/cetyltrimethylammonium bromide nanoscale aggregates

Jahan-Bakhsh Raoofa, Sayed Reza Hosseinib, Seyedeh Zeinab Mousavi-Sania   

  1. a Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, 47416-95447, Babolsar, Iran;
    b Nanochemistry Research Laboratory, Faculty of Chemistry, University of Mazandaran, 47416-95447, Babolsar, Iran
  • Received:2014-06-26 Revised:2014-08-11 Online:2015-01-21 Published:2015-01-21

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摘要：

A novel, cost-effective, and simple electrocatalyst based on a Pt-modified glassy carbon electrode (GCE), using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant, is reported. Amphiphilic CTAB molecules were adsorbed on GCE by immersion in a CTAB solution. The positively charged hydrophilic layer, which consisted of small aggregates of average size less than 100 nm, was used for accumulation and complexation of [PtCl6]2- anions by immersing the electrode in K2PtCl6 solution. The modified electrode was characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, impedance spectroscopy, and electrochemical methods. The electrocatalytic activity of the Pt particles in the hydrogen evolution reaction (HER) was investigated. The results show that the CTAB surfactant enhances the electrocatalytic activity of the Pt particles in the HER in acidic solution.

关键词: Cetyltrimethylammonium bromide, Impedance spectroscopy, Hydrogen evolution, Platinum particle

Abstract:

A novel, cost-effective, and simple electrocatalyst based on a Pt-modified glassy carbon electrode (GCE), using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant, is reported. Amphiphilic CTAB molecules were adsorbed on GCE by immersion in a CTAB solution. The positively charged hydrophilic layer, which consisted of small aggregates of average size less than 100 nm, was used for accumulation and complexation of [PtCl6]2- anions by immersing the electrode in K2PtCl6 solution. The modified electrode was characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, impedance spectroscopy, and electrochemical methods. The electrocatalytic activity of the Pt particles in the hydrogen evolution reaction (HER) was investigated. The results show that the CTAB surfactant enhances the electrocatalytic activity of the Pt particles in the HER in acidic solution.

Key words: Cetyltrimethylammonium bromide, Impedance spectroscopy, Hydrogen evolution, Platinum particle