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Title
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Improved hydrogen evolution on glassy carbon electrode modified with novel Pt/cetyltrimethylammonium bromide nanoscale aggregates
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Type
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JournalPaper
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Keywords
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Cetyltrimethyl ammonium bromide; Impedance spectroscopy; Hydrogen evolution; Platinum particles
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Abstract
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A novel, cost-effective and simple electrocatalyst based on platinum modified glassy carbon electrode (GCE) using cetyltrimethyl ammonium bromide (CTAB) as a cationic surfactant was reported. At first, amphiphilic molecules of CTAB were adsorbed onto the GCE by immersing in CTAB solutions. The hydrophilic layer with positive charge (small aggregates with average size under 100 nm) was used for accumulation and complexation of hexachloroplatinate anions by immersing the electrode in K2PtCl6 solution. The modified electrode was characterized by scanning electron microscopy, energy dispersive spectroscopy, impedance spectroscopy and electrochemical methods. Electrocatalytic activity of the Pt particles towards hydrogen evolution reaction (HER) has been investigated. The results showed that the CTAB surfactant enhances the electrocatalytic activity of the Pt particles on the HER in an acidic solution.
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Researchers
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Seyedeh Zeinab Mousavi‐Sani (Third Researcher), Sayed Reza Hosseini-zavvarmahalleh (Second Researcher), Jahan Bakhsh Raoof (First Researcher)
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