Square-Wave Pulse Deposition of Pt Nanoparticles for Ethanol Electrooxidation

Authors

  • Devi Indrawati Syafei Instute of Materials Science and Engineering National Taiwan University
  • Hilman Syafei Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, Indonesia

DOI:

https://doi.org/10.56425/cma.v3i1.70

Keywords:

electrocatalyst, platinum, ethanol electrooxidation.

Abstract

Platinum (Pt) is often used as an electrocatalyst in the electrooxidation of ethanol. There have been many attempts to improve the catalytic properties of platinum-based catalysts to achieve satisfactory results. The solutions are manipulating the size and shape of Pt. In this study, Pt will be deposited using the square wave pulse deposition method at upper potential variations. The Pt samples were characterized by scanning electron microscopy (SEM), X-ray diffraction, energy dispersive X-ray, and electrochemical impedance spectroscopy. The results of SEM show that the morphology of Pt at potentials of 0.3 V, 0.5 V, and 1.0 V produces a dendritic nanothorn morphology, while 1.25 V and 1.50 V produce a nanoleaf morphology. The lowest charge transfer resistance value is at Pt1.0V with the smallest size. The highest yield of ethanol electrooxidation was at Pt1.0V reaching 8.82 mA/cm2.

Downloads

Published

2024-02-29

Issue

Section

Articles