Chronoamperometric response at nanoscale liquid–liquid interface arrays

In this work, potential step chronoamperometry (PSCA) was used to study the behaviour of arrays of nanoscale interfaces between two immiscible electrolyte solutions (nanoITIES). The nanoITIES arrays were formed at nanoporous silicon nitride membranes containing 400 nanopores in a hexagonal close-pac...

Full description

Bibliographic Details
Main Authors:	Sairi, M., Strutwolf, J., Mitchell, R., Silvester, Debbie, Arrigan, Damien
Format:	Journal Article
Published:	Pergamon 2013
Subjects:	Charging time Response time nanoITIES arrays Potential step chronoamperometry Silicon nitride membranes
Online Access:	http://hdl.handle.net/20.500.11937/7121

id	curtin-20.500.11937-7121
recordtype	eprints
spelling	curtin-20.500.11937-71212017-09-13T14:40:30Z Chronoamperometric response at nanoscale liquid–liquid interface arrays Sairi, M. Strutwolf, J. Mitchell, R. Silvester, Debbie Arrigan, Damien Charging time Response time nanoITIES arrays Potential step chronoamperometry Silicon nitride membranes In this work, potential step chronoamperometry (PSCA) was used to study the behaviour of arrays of nanoscale interfaces between two immiscible electrolyte solutions (nanoITIES). The nanoITIES arrays were formed at nanoporous silicon nitride membranes containing 400 nanopores in a hexagonal close-packed arrangement. Three membrane designs, with nanopore radii of 75, 50 and 17 nm, were studied by ion-transfer of tetrapropylammonium cations across the nanopore array-supported water\|1,6-dichlorohexane interface. The cell time constants and charging times were determined prior to experimental PSCA. The three membrane designs studied exhibited charging times in the range of 0.08–0.46 s, with the smallest pore configuration (17 nm radius) exhibiting the longest charging time. The experimental steady-state currents were 30–50% lower than of the calculated inlaid disc model currents, due to diffusion zone overlap at adjacent interfaces. The three nano-interface arrays studied also showed response times of 6 ± 1 s, being the time required to reach 95% of the steady-state current. 2013 Journal Article http://hdl.handle.net/20.500.11937/7121 10.1016/j.electacta.2012.11.062 Pergamon fulltext
repository_type	Digital Repository
institution_category	Local University
institution	Curtin University Malaysia
building	Curtin Institutional Repository
collection	Online Access
topic	Charging time Response time nanoITIES arrays Potential step chronoamperometry Silicon nitride membranes
spellingShingle	Charging time Response time nanoITIES arrays Potential step chronoamperometry Silicon nitride membranes Sairi, M. Strutwolf, J. Mitchell, R. Silvester, Debbie Arrigan, Damien Chronoamperometric response at nanoscale liquid–liquid interface arrays
description	In this work, potential step chronoamperometry (PSCA) was used to study the behaviour of arrays of nanoscale interfaces between two immiscible electrolyte solutions (nanoITIES). The nanoITIES arrays were formed at nanoporous silicon nitride membranes containing 400 nanopores in a hexagonal close-packed arrangement. Three membrane designs, with nanopore radii of 75, 50 and 17 nm, were studied by ion-transfer of tetrapropylammonium cations across the nanopore array-supported water\|1,6-dichlorohexane interface. The cell time constants and charging times were determined prior to experimental PSCA. The three membrane designs studied exhibited charging times in the range of 0.08–0.46 s, with the smallest pore configuration (17 nm radius) exhibiting the longest charging time. The experimental steady-state currents were 30–50% lower than of the calculated inlaid disc model currents, due to diffusion zone overlap at adjacent interfaces. The three nano-interface arrays studied also showed response times of 6 ± 1 s, being the time required to reach 95% of the steady-state current.
format	Journal Article
author	Sairi, M. Strutwolf, J. Mitchell, R. Silvester, Debbie Arrigan, Damien
author_facet	Sairi, M. Strutwolf, J. Mitchell, R. Silvester, Debbie Arrigan, Damien
author_sort	Sairi, M.
title	Chronoamperometric response at nanoscale liquid–liquid interface arrays
title_short	Chronoamperometric response at nanoscale liquid–liquid interface arrays
title_full	Chronoamperometric response at nanoscale liquid–liquid interface arrays
title_fullStr	Chronoamperometric response at nanoscale liquid–liquid interface arrays
title_full_unstemmed	Chronoamperometric response at nanoscale liquid–liquid interface arrays
title_sort	chronoamperometric response at nanoscale liquid–liquid interface arrays
publisher	Pergamon
publishDate	2013
url	http://hdl.handle.net/20.500.11937/7121
first_indexed	2018-09-06T18:14:41Z
last_indexed	2018-09-06T18:14:41Z
_version_	1610882934812704768

Chronoamperometric response at nanoscale liquid–liquid interface arrays

Similar Items