Observation and Analysis of Staircase Response of Single Palladium Nanoparticle Collision on Gold Ultramicroelectrodes

Collision (or impact) of single palladium nanoparticles (Pd NPs) on gold (Au), copper (Cu), nickel (Ni), and platinum (Pt) ultramicroelectrodes (UMEs) were investigated via electrocatalytic amplification method. Unlike the blip responses of previous Pd NP collision studies, the staircase current res...

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Published inNanomaterials (Basel, Switzerland) Vol. 12; no. 18; p. 3095
Main Authors Rudakemwa, Hubert, Kim, Ki Jun, Park, Tae Eun, Son, Hyeryeon, Kwon, Seong Jung
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 07.09.2022
MDPI
Subjects
Analysis
collision
Copper
electrocatalytic amplification
Electrodes
Electrolytes
Experiments
Gold
Nanoparticles
Nickel
Oxidation
Palladium
Platinum
single nanoparticle
staircase response
Wire
United States > US
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Summary:Collision (or impact) of single palladium nanoparticles (Pd NPs) on gold (Au), copper (Cu), nickel (Ni), and platinum (Pt) ultramicroelectrodes (UMEs) were investigated via electrocatalytic amplification method. Unlike the blip responses of previous Pd NP collision studies, the staircase current response was obtained with the Au UME. The current response, including collision frequency and peak magnitude, was analyzed depending on the material of the UME and the applied potential. Adsorption factors implying the interaction between the Pd NP and the UMEs are suggested based on the experimental results.
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These authors are contributed equally.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12183095