Behavior of Palladium Nanoparticles in the Absence or Presence of Cobalt Tetraaminophthalocyanine for the Electrooxidation of Hydrazine

Title: Behavior of Palladium Nanoparticles in the Absence or Presence of Cobalt Tetraaminophthalocyanine for the Electrooxidation of Hydrazine
Creator: Maringa, Audacity, Nyokong, Tebello
Date: 2014
Type: Article
Identifier: vital:7305
Identifier: http://hdl.handle.net/10962/d1020382
Description: We report on the electrodeposition of palladium nanoparticles (PdNPs) on a glassy carbon electrode (GCE) and onto a poly-CoTAPc-GCE (CoTAPc=cobalt tetraamino phthalocyanine) surface. The electrodes are denoted as PdNPs-GCE and PdNPs/poly-CoTAPc-GCE, respectively. PdNPs/poly-CoTAPc-GCE showed the best activity for the oxidation of hydrazine at the lowest potential of −0.28 V and with the highest currents. The results were further supported by electrochemical impedance spectroscopy (EIS) which showed that there was less resistance to charge transfer for PdNPs/poly-CoTAPc-GCE compared to PdNPs-GCE. The catalytic rate constant for hydrazine oxidation was 6.12×108 cm3 mol−1 s−1 using PdNPs/poly-CoTAPc-GCE.
Description: Original publication is available at http://dx.doi.org/10.1002/elan.201400028
Format: 10 pages, pdf
Publisher: Wiley
Language: English
Relation: Maringa, A. & Nyokong, T. 2014. Behavior of Palladium Nanoparticles in the Absence or Presence of Cobalt Tetraaminophthalocyanine for the Electrooxidation of Hydrazine. Electroanalysis, 26(5):1068–1077. Available: http://dx.doi.org/10.1002/elan.201400028.

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Nyokong, Tebello (Distinguished Professor)