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Electroanalysis in 2D-TiO2 nanosheet hosts: Electrolyte and selectivity effects in ferroceneboronic acid – saccharide binding

Electroanalysis in 2D-TiO2 nanosheet hosts: Electrolyte and selectivity effects in ferroceneboronic acid – saccharide binding
Electroanalysis in 2D-TiO2 nanosheet hosts: Electrolyte and selectivity effects in ferroceneboronic acid – saccharide binding

A 2D-TiO2 nanosheet material (as a film deposit of approximately 1 μm thickness on glassy carbon) is employed to host ferroceneboronic acid receptor molecules. It is suggested that the negative surface charge on 2D-TiO2 nanosheets allows weak binding of ferroceneboronic acid, which can then be employed to detect fluoride, glucose, or fructose. The nature of the aqueous electrolyte is shown to strongly affect the ferroceneboronic acid – host interaction. In the presence of di-sodium sulfate stable reversible voltammetric responses are observed. In the presence of fluoride loss of the ferroceneboronic acid occurs probably due to weakening of the boron-titanate interaction. For glucose and for fructose “bound” and “unbound” states of the ferroceneboronic acid are observed as long as fast square wave voltammetry is employed to capture the “bound” state before decomplexation can occur. It is shown that this kinetic selectivity is highly biassed towards fructose and essentially insensitive to glucose.

2D-nanosheets, double layer, lamella structure, release, saccharide
1040-0397
1303-1310
Tri Wahyuni, Wulan
3f8b8399-7425-442c-9172-4f2fba98f820
Riza Putra, Budi
e25d94a4-e3c2-4318-a15c-8841a52b03dc
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
James, Tony D.
5cfd8c35-9fa1-4583-934e-5bc6961f6fa5
Kociok-Köhn, Gabriele
b016883a-aab5-4255-afc2-32a210445934
Marken, Frank
327ba500-d1f7-41f1-a22f-ca3308d14d96
Tri Wahyuni, Wulan
3f8b8399-7425-442c-9172-4f2fba98f820
Riza Putra, Budi
e25d94a4-e3c2-4318-a15c-8841a52b03dc
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
James, Tony D.
5cfd8c35-9fa1-4583-934e-5bc6961f6fa5
Kociok-Köhn, Gabriele
b016883a-aab5-4255-afc2-32a210445934
Marken, Frank
327ba500-d1f7-41f1-a22f-ca3308d14d96

Tri Wahyuni, Wulan, Riza Putra, Budi, Harito, Christian, Bavykin, Dmitry V., Walsh, Frank C., James, Tony D., Kociok-Köhn, Gabriele and Marken, Frank (2018) Electroanalysis in 2D-TiO2 nanosheet hosts: Electrolyte and selectivity effects in ferroceneboronic acid – saccharide binding. Electroanalysis, 30 (7), 1303-1310. (doi:10.1002/elan.201700617).

Record type: Article

Abstract

A 2D-TiO2 nanosheet material (as a film deposit of approximately 1 μm thickness on glassy carbon) is employed to host ferroceneboronic acid receptor molecules. It is suggested that the negative surface charge on 2D-TiO2 nanosheets allows weak binding of ferroceneboronic acid, which can then be employed to detect fluoride, glucose, or fructose. The nature of the aqueous electrolyte is shown to strongly affect the ferroceneboronic acid – host interaction. In the presence of di-sodium sulfate stable reversible voltammetric responses are observed. In the presence of fluoride loss of the ferroceneboronic acid occurs probably due to weakening of the boron-titanate interaction. For glucose and for fructose “bound” and “unbound” states of the ferroceneboronic acid are observed as long as fast square wave voltammetry is employed to capture the “bound” state before decomplexation can occur. It is shown that this kinetic selectivity is highly biassed towards fructose and essentially insensitive to glucose.

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More information

Accepted/In Press date: 14 November 2017
e-pub ahead of print date: 17 November 2017
Published date: 1 July 2018
Keywords: 2D-nanosheets, double layer, lamella structure, release, saccharide

Identifiers

Local EPrints ID: 422598
URI: http://eprints.soton.ac.uk/id/eprint/422598
ISSN: 1040-0397
PURE UUID: 1e346fd0-5fc4-4e17-bcb3-148e2d23d289

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Date deposited: 26 Jul 2018 16:30
Last modified: 07 Oct 2020 00:28

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Contributors

Author: Wulan Tri Wahyuni
Author: Budi Riza Putra
Author: Christian Harito
Author: Frank C. Walsh
Author: Tony D. James
Author: Gabriele Kociok-Köhn
Author: Frank Marken

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