Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline

Munkombwe Muchindu; Tesfaye Waryo; Omotayo Arotiba; Ewa Kazimierska; Aoife Morrin; Anthony J. Killard; Malcolm R. Smyth; Nazeem Jahed; Boitumelo Kgarebe; Priscilla G.L. Baker; Emmanuel I. Iwuoha

doi:10.1016/j.electacta.2009.06.047

Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline

Munkombwe Muchindu, Tesfaye Waryo, Omotayo Arotiba, Ewa Kazimierska, Aoife Morrin, Anthony J. Killard, Malcolm R. Smyth, Nazeem Jahed, Boitumelo Kgarebe, Priscilla G.L. Baker, Emmanuel I. Iwuoha

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Aniline doped with polyvinyl sulphonate (PV-SO₃^-) was electropolymerised on screen printed carbon (SPCE) and glassy carbon (GCE) electrodes. Then nano-structured polystyrene (PS_NP) latex beads functionalised with amine (PS_NP-NH₂) and sulphate (PS_NP-OSO₃^-) were self-assembled on the modified SPCE and GCE. The resultant polyaniline nanocomposites (PANI|PS_NP-NH₂ or PANI|PS_NP-OSO₃^-) were characterised by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). Brown-Anson analysis of the multi-scan rate CV responses of the various PANI films gave surface concentrations of the order of 10^-8 mol cm^-2. UV-vis spectra of the PANI films dissolved in dimethyl sulphoxide showed typical strong absorbance maxima at 480 and 740 nm associated with benzenoid π-π* transition and quinoid excitons of polyaniline, respectively. The SEM images of the PANI nanocomposite films showed cauliflower-like structures that are <100 nm in diameter. When applied as electrochemical nitrite sensor, sensitivity values of 60, 40 and 30 μA/mM were obtained for electrode systems containing PANI|PS_NP-NH₂, PANI and PANI|PS_NP-SO₃^-, respectively. The corresponding limits of detection of the sensors were 7.4, 9.2 and 38.2 μM NO₂^-.

Original language	English
Pages (from-to)	4274-4280
Number of pages	7
Journal	Electrochimica Acta
Volume	55
Issue number	14
DOIs	https://doi.org/10.1016/j.electacta.2009.06.047
Publication status	Published - 30 May 2010
Externally published	Yes

Keywords

Modified polystyrene latex beads
Nanocomposite
Nitrite nanosensor
Polyaniline
Polyvinyl sulphonate

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2009.06.047

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Muchindu, M., Waryo, T., Arotiba, O., Kazimierska, E., Morrin, A., Killard, A. J., Smyth, M. R., Jahed, N., Kgarebe, B., Baker, P. G. L., & Iwuoha, E. I. (2010). Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline. Electrochimica Acta, 55(14), 4274-4280. https://doi.org/10.1016/j.electacta.2009.06.047

@article{2316547343a446e29baa6f1a2bf8a1b4,

title = "Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline",

abstract = "Aniline doped with polyvinyl sulphonate (PV-SO3-) was electropolymerised on screen printed carbon (SPCE) and glassy carbon (GCE) electrodes. Then nano-structured polystyrene (PSNP) latex beads functionalised with amine (PSNP-NH2) and sulphate (PSNP-OSO3-) were self-assembled on the modified SPCE and GCE. The resultant polyaniline nanocomposites (PANI|PSNP-NH2 or PANI|PSNP-OSO3-) were characterised by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). Brown-Anson analysis of the multi-scan rate CV responses of the various PANI films gave surface concentrations of the order of 10-8 mol cm-2. UV-vis spectra of the PANI films dissolved in dimethyl sulphoxide showed typical strong absorbance maxima at 480 and 740 nm associated with benzenoid π-π* transition and quinoid excitons of polyaniline, respectively. The SEM images of the PANI nanocomposite films showed cauliflower-like structures that are <100 nm in diameter. When applied as electrochemical nitrite sensor, sensitivity values of 60, 40 and 30 μA/mM were obtained for electrode systems containing PANI|PSNP-NH2, PANI and PANI|PSNP-SO3-, respectively. The corresponding limits of detection of the sensors were 7.4, 9.2 and 38.2 μM NO2-.",

keywords = "Modified polystyrene latex beads, Nanocomposite, Nitrite nanosensor, Polyaniline, Polyvinyl sulphonate",

author = "Munkombwe Muchindu and Tesfaye Waryo and Omotayo Arotiba and Ewa Kazimierska and Aoife Morrin and Killard, {Anthony J.} and Smyth, {Malcolm R.} and Nazeem Jahed and Boitumelo Kgarebe and Baker, {Priscilla G.L.} and Iwuoha, {Emmanuel I.}",

year = "2010",

month = may,

day = "30",

doi = "10.1016/j.electacta.2009.06.047",

language = "English",

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journal = "Electrochimica Acta",

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Muchindu, M, Waryo, T, Arotiba, O, Kazimierska, E, Morrin, A, Killard, AJ, Smyth, MR, Jahed, N, Kgarebe, B, Baker, PGL & Iwuoha, EI 2010, 'Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline', Electrochimica Acta, vol. 55, no. 14, pp. 4274-4280. https://doi.org/10.1016/j.electacta.2009.06.047

TY - JOUR

T1 - Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline

AU - Muchindu, Munkombwe

AU - Waryo, Tesfaye

AU - Arotiba, Omotayo

AU - Kazimierska, Ewa

AU - Morrin, Aoife

AU - Killard, Anthony J.

AU - Smyth, Malcolm R.

AU - Jahed, Nazeem

AU - Kgarebe, Boitumelo

AU - Baker, Priscilla G.L.

AU - Iwuoha, Emmanuel I.

PY - 2010/5/30

Y1 - 2010/5/30

N2 - Aniline doped with polyvinyl sulphonate (PV-SO3-) was electropolymerised on screen printed carbon (SPCE) and glassy carbon (GCE) electrodes. Then nano-structured polystyrene (PSNP) latex beads functionalised with amine (PSNP-NH2) and sulphate (PSNP-OSO3-) were self-assembled on the modified SPCE and GCE. The resultant polyaniline nanocomposites (PANI|PSNP-NH2 or PANI|PSNP-OSO3-) were characterised by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). Brown-Anson analysis of the multi-scan rate CV responses of the various PANI films gave surface concentrations of the order of 10-8 mol cm-2. UV-vis spectra of the PANI films dissolved in dimethyl sulphoxide showed typical strong absorbance maxima at 480 and 740 nm associated with benzenoid π-π* transition and quinoid excitons of polyaniline, respectively. The SEM images of the PANI nanocomposite films showed cauliflower-like structures that are <100 nm in diameter. When applied as electrochemical nitrite sensor, sensitivity values of 60, 40 and 30 μA/mM were obtained for electrode systems containing PANI|PSNP-NH2, PANI and PANI|PSNP-SO3-, respectively. The corresponding limits of detection of the sensors were 7.4, 9.2 and 38.2 μM NO2-.

AB - Aniline doped with polyvinyl sulphonate (PV-SO3-) was electropolymerised on screen printed carbon (SPCE) and glassy carbon (GCE) electrodes. Then nano-structured polystyrene (PSNP) latex beads functionalised with amine (PSNP-NH2) and sulphate (PSNP-OSO3-) were self-assembled on the modified SPCE and GCE. The resultant polyaniline nanocomposites (PANI|PSNP-NH2 or PANI|PSNP-OSO3-) were characterised by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). Brown-Anson analysis of the multi-scan rate CV responses of the various PANI films gave surface concentrations of the order of 10-8 mol cm-2. UV-vis spectra of the PANI films dissolved in dimethyl sulphoxide showed typical strong absorbance maxima at 480 and 740 nm associated with benzenoid π-π* transition and quinoid excitons of polyaniline, respectively. The SEM images of the PANI nanocomposite films showed cauliflower-like structures that are <100 nm in diameter. When applied as electrochemical nitrite sensor, sensitivity values of 60, 40 and 30 μA/mM were obtained for electrode systems containing PANI|PSNP-NH2, PANI and PANI|PSNP-SO3-, respectively. The corresponding limits of detection of the sensors were 7.4, 9.2 and 38.2 μM NO2-.

KW - Modified polystyrene latex beads

KW - Nanocomposite

KW - Nitrite nanosensor

KW - Polyaniline

KW - Polyvinyl sulphonate

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U2 - 10.1016/j.electacta.2009.06.047

DO - 10.1016/j.electacta.2009.06.047

M3 - Article

AN - SCOPUS:77950846264

SN - 0013-4686

VL - 55

SP - 4274

EP - 4280

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 14

ER -

Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline

Abstract

Keywords

ASJC Scopus subject areas

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