Real-time probing of the growth dynamics of nanoparticles using potentiometric ion-selective electrodes

K Y Chumbimuni-Torres; Eric Bakker; J Wang

doi:10.1016/j.elecom.2009.08.029

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Real-time probing of the growth dynamics of nanoparticles using potentiometric ion-selective electrodes

Journal article

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Real-time probing of the growth dynamics of nanoparticles using potentiometric ion-selective electrodes

K Y Chumbimuni-Torres, Eric Bakker and J Wang

Electrochemistry Communications, Vol.11(10), pp.1964-1967

2009

DOI: https://doi.org/10.1016/j.elecom.2009.08.029

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Abstract

nanoparticles

growth

ion-selective electrodes

potentiometry

silver

hydroquinone

This Communication demonstrates the ability of potentiometric ion-selective electrodes (ISE) to probe the growth dynamics of metal nanoparticles in real-time. The new monitoring capability is illustrated using a solid-contact silver ISE for monitoring the hydroquinone-induced precipitation of silver on gold nanoparticle seeds. Potential-time recordings obtained under different conditions are used to monitor the depletion of the silver ion during the nanoparticle formation and shed useful insights into the growth dynamics of the nanoparticles. Such potentiometric profiles correlate well with the analogous optical measurements. The new real-time electrochemical probing of the particle growth process reflects the direct, rapid and sensitive response of modern ISE to changes in the level of the precipitated metal ion from the bulk solution and holds considerable promise for probing the preparation of different nanoscale materials.

Details

Title: Real-time probing of the growth dynamics of nanoparticles using potentiometric ion-selective electrodes
Authors: K Y Chumbimuni-Torres (Author) - University of California San Diego, United States
Eric Bakker (Author) - Curtin University of Technology
J Wang (Author) - University of California San Diego, United States
Publication details: Electrochemistry Communications, Vol.11(10), pp.1964-1967
Publisher: Elsevier Inc.
Date published: 2009
DOI: 10.1016/j.elecom.2009.08.029
ISSN: 1388-2481
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450117802621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Electrochemistry