Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.elecom.2009.08.003
Title: Sensitive detection of potassium ion using Prussian blue nanotube sensor
Authors: Nguyen, B.T.T.
Ang, J.Q.
Toh, C.-S. 
Keywords: Ion-selective electrode
Membrane
Nanotubes
Potassium
Prussian blue
Sensor
Issue Date: Oct-2009
Citation: Nguyen, B.T.T., Ang, J.Q., Toh, C.-S. (2009-10). Sensitive detection of potassium ion using Prussian blue nanotube sensor. Electrochemistry Communications 11 (10) : 1861-1864. ScholarBank@NUS Repository. https://doi.org/10.1016/j.elecom.2009.08.003
Abstract: A model K+ sensor using Prussian blue nanotubes is fabricated by electrochemical deposition of Prussian blue (PB) within the nanochannels of a porous metal-coated membrane with partially covered pore openings. The PB nanotube sensor exhibits excellent stability giving reproducible peak potentials up to 500 measurement cycles, a very low detection limit of 2.0 × 10-8 M and extremely wide logarithmic linear ranges between 5.0 × 10-8-7.0 × 10-4 M and 7.0 × 10-4-1.0 M. Negligible interferences by Na+, Mg2+ and Ca2+ are observed and a rapid analysis time of 30 s is readily achieved. The ease of electrodeposition, high stability of PB nanotubes and outstanding analytical performance which surpasses conventional PB voltammetric and potentiometric sensors demonstrates potential sensing applications including ion sensors and biosensors using PB and other metal hexacyanoferrate nanotubes. © 2009 Elsevier B.V. All rights reserved.
Source Title: Electrochemistry Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/94789
ISSN: 13882481
DOI: 10.1016/j.elecom.2009.08.003
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