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Potentiometric cholesterol biosensor based on ZnO nanorods chemically grown on Ag wire

Israr, M. Q. ; Sadaf, J. R. ; Asif, M. H. ; Nur, O. ; Willander, M. and Danielsson, Bengt LU (2010) India-Japan Workshop on Biomolecular Electronics and Organic Nanotechnology for Environmental Preservation (IJWBME2009) 519(3). p.1106-1109
Abstract
An electrochemical biosensor based on ZnO nanorods for potentiometric cholesterol determination is proposed. Hexagon-shaped ZnO nanorods were directly grown on a silver wire having a diameter of 250 mu m using low temperature aqueous chemical approach that produced ZnO nanorods with a diameter of 125250 nm and a length of similar to 1 mu m. Cholesterol oxidase (ChOx) was immobilized by a physical adsorption method onto ZnO nanorods. The electrochemical response of the ChOx/ZnO/Ag biosensor against a standard reference electrode (Ag/AgCl) was investigated as a logarithmic function of the cholesterol concentration (1 x 10(-6)M to 1 x 10(-2)M) showing good linearity with a sensitivity of 35.2 mV per decade and the stable output signal was... (More)
An electrochemical biosensor based on ZnO nanorods for potentiometric cholesterol determination is proposed. Hexagon-shaped ZnO nanorods were directly grown on a silver wire having a diameter of 250 mu m using low temperature aqueous chemical approach that produced ZnO nanorods with a diameter of 125250 nm and a length of similar to 1 mu m. Cholesterol oxidase (ChOx) was immobilized by a physical adsorption method onto ZnO nanorods. The electrochemical response of the ChOx/ZnO/Ag biosensor against a standard reference electrode (Ag/AgCl) was investigated as a logarithmic function of the cholesterol concentration (1 x 10(-6)M to 1 x 10(-2)M) showing good linearity with a sensitivity of 35.2 mV per decade and the stable output signal was attained at around 10 s. (C) 2010 Elsevier BM. All rights reserved. (Less)
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author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
ZnO nanorods, Electrostatic immobilization, Cholesterol oxidase, Potentiometric biosensor, Cholesterol
host publication
Thin Solid Films
volume
519
issue
3
pages
1106 - 1109
publisher
Elsevier
conference name
India-Japan Workshop on Biomolecular Electronics and Organic Nanotechnology for Environmental Preservation (IJWBME2009)
conference dates
2009-12-17 - 2009-12-19
external identifiers
  • wos:000285075300032
  • scopus:78049300950
ISSN
0040-6090
DOI
10.1016/j.tsf.2010.08.052
language
English
LU publication?
yes
id
2ab3b793-50e6-41c1-8d4a-49c7157eeb0f (old id 1772900)
date added to LUP
2016-04-01 13:45:22
date last changed
2022-04-06 06:55:23
@inproceedings{2ab3b793-50e6-41c1-8d4a-49c7157eeb0f,
  abstract     = {{An electrochemical biosensor based on ZnO nanorods for potentiometric cholesterol determination is proposed. Hexagon-shaped ZnO nanorods were directly grown on a silver wire having a diameter of 250 mu m using low temperature aqueous chemical approach that produced ZnO nanorods with a diameter of 125250 nm and a length of similar to 1 mu m. Cholesterol oxidase (ChOx) was immobilized by a physical adsorption method onto ZnO nanorods. The electrochemical response of the ChOx/ZnO/Ag biosensor against a standard reference electrode (Ag/AgCl) was investigated as a logarithmic function of the cholesterol concentration (1 x 10(-6)M to 1 x 10(-2)M) showing good linearity with a sensitivity of 35.2 mV per decade and the stable output signal was attained at around 10 s. (C) 2010 Elsevier BM. All rights reserved.}},
  author       = {{Israr, M. Q. and Sadaf, J. R. and Asif, M. H. and Nur, O. and Willander, M. and Danielsson, Bengt}},
  booktitle    = {{Thin Solid Films}},
  issn         = {{0040-6090}},
  keywords     = {{ZnO nanorods; Electrostatic immobilization; Cholesterol oxidase; Potentiometric biosensor; Cholesterol}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{1106--1109}},
  publisher    = {{Elsevier}},
  title        = {{Potentiometric cholesterol biosensor based on ZnO nanorods chemically grown on Ag wire}},
  url          = {{http://dx.doi.org/10.1016/j.tsf.2010.08.052}},
  doi          = {{10.1016/j.tsf.2010.08.052}},
  volume       = {{519}},
  year         = {{2010}},
}