Photoelectrochemical sensing of glucose based on quantum dot and enzyme nanocomposites

Min Zheng; Yan Cui; Xinyu Li; Shaoqin Liu; Zhiyong Tang

doi:10.1016/j.jelechem.2010.11.036

Photoelectrochemical sensing of glucose based on quantum dot and enzyme nanocomposites

Min Zheng
, Yan Cui
, Xinyu Li
, Shaoqin Liu^*
, Zhiyong Tang

^*Corresponding author for this work

Faculty of Life Sciences and Medicine

Harbin Institute of Technology
National Center for Nanotechnology and Science

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

103 Scopus citations

Abstract

A simple procedure for constructing the photoelectrochemical biosensor based on TiO₂/CdSe@CdS QD nanocomposite modified electrode was developed. The TiO₂/CdSe@CdS QD nanocomposite modified electrode was obtained by alternately depositing water-soluble CdSe@CdS QD and a mixture of [cobalt(o-phen)₃]^2+/3+ and poly(ethyleneimine) (PEI) over mesoscopic TiO₂ films. The obtained TiO₂/CdSe@CdS QD nanocomposite modified electrode exhibits much higher and stable photocurrent intensity than that of the photoelectrochemical biosensors reported so far. After the TiO₂/CdSe@CdS QD nanocomposite modified electrode was coated with glucose oxidase, the photocurrent intensity was enhanced towards the addition of glucose. Thus, a photoelectrochemical biosensor for the detection of glucose was developed by monitoring the changes in the photocurrent intensity. Moreover, the proposed biosensor possessed good reproducibility and storage stability. Combining TiO₂/CdSe@CdS nanocomposite and other biomolecules could be extended readily for sensing other biorecognition events.

Original language	English
Pages (from-to)	167-173
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	656
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jelechem.2010.11.036
State	Published - 15 Jun 2011

Keywords

Glucose oxidase
Nanocomposite
Photoelectrochemical sensor
Quantum dots

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10.1016/j.jelechem.2010.11.036

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title = "Photoelectrochemical sensing of glucose based on quantum dot and enzyme nanocomposites",

abstract = "A simple procedure for constructing the photoelectrochemical biosensor based on TiO2/CdSe@CdS QD nanocomposite modified electrode was developed. The TiO2/CdSe@CdS QD nanocomposite modified electrode was obtained by alternately depositing water-soluble CdSe@CdS QD and a mixture of [cobalt(o-phen)3]2+/3+ and poly(ethyleneimine) (PEI) over mesoscopic TiO2 films. The obtained TiO2/CdSe@CdS QD nanocomposite modified electrode exhibits much higher and stable photocurrent intensity than that of the photoelectrochemical biosensors reported so far. After the TiO2/CdSe@CdS QD nanocomposite modified electrode was coated with glucose oxidase, the photocurrent intensity was enhanced towards the addition of glucose. Thus, a photoelectrochemical biosensor for the detection of glucose was developed by monitoring the changes in the photocurrent intensity. Moreover, the proposed biosensor possessed good reproducibility and storage stability. Combining TiO2/CdSe@CdS nanocomposite and other biomolecules could be extended readily for sensing other biorecognition events.",

keywords = "Glucose oxidase, Nanocomposite, Photoelectrochemical sensor, Quantum dots",

author = "Min Zheng and Yan Cui and Xinyu Li and Shaoqin Liu and Zhiyong Tang",

year = "2011",

month = jun,

day = "15",

doi = "10.1016/j.jelechem.2010.11.036",

language = "英语",

volume = "656",

pages = "167--173",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

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TY - JOUR

T1 - Photoelectrochemical sensing of glucose based on quantum dot and enzyme nanocomposites

AU - Zheng, Min

AU - Cui, Yan

AU - Li, Xinyu

AU - Liu, Shaoqin

AU - Tang, Zhiyong

PY - 2011/6/15

Y1 - 2011/6/15

N2 - A simple procedure for constructing the photoelectrochemical biosensor based on TiO2/CdSe@CdS QD nanocomposite modified electrode was developed. The TiO2/CdSe@CdS QD nanocomposite modified electrode was obtained by alternately depositing water-soluble CdSe@CdS QD and a mixture of [cobalt(o-phen)3]2+/3+ and poly(ethyleneimine) (PEI) over mesoscopic TiO2 films. The obtained TiO2/CdSe@CdS QD nanocomposite modified electrode exhibits much higher and stable photocurrent intensity than that of the photoelectrochemical biosensors reported so far. After the TiO2/CdSe@CdS QD nanocomposite modified electrode was coated with glucose oxidase, the photocurrent intensity was enhanced towards the addition of glucose. Thus, a photoelectrochemical biosensor for the detection of glucose was developed by monitoring the changes in the photocurrent intensity. Moreover, the proposed biosensor possessed good reproducibility and storage stability. Combining TiO2/CdSe@CdS nanocomposite and other biomolecules could be extended readily for sensing other biorecognition events.

AB - A simple procedure for constructing the photoelectrochemical biosensor based on TiO2/CdSe@CdS QD nanocomposite modified electrode was developed. The TiO2/CdSe@CdS QD nanocomposite modified electrode was obtained by alternately depositing water-soluble CdSe@CdS QD and a mixture of [cobalt(o-phen)3]2+/3+ and poly(ethyleneimine) (PEI) over mesoscopic TiO2 films. The obtained TiO2/CdSe@CdS QD nanocomposite modified electrode exhibits much higher and stable photocurrent intensity than that of the photoelectrochemical biosensors reported so far. After the TiO2/CdSe@CdS QD nanocomposite modified electrode was coated with glucose oxidase, the photocurrent intensity was enhanced towards the addition of glucose. Thus, a photoelectrochemical biosensor for the detection of glucose was developed by monitoring the changes in the photocurrent intensity. Moreover, the proposed biosensor possessed good reproducibility and storage stability. Combining TiO2/CdSe@CdS nanocomposite and other biomolecules could be extended readily for sensing other biorecognition events.

KW - Glucose oxidase

KW - Nanocomposite

KW - Photoelectrochemical sensor

KW - Quantum dots

UR - https://www.scopus.com/pages/publications/79955887343

U2 - 10.1016/j.jelechem.2010.11.036

DO - 10.1016/j.jelechem.2010.11.036

M3 - 文章

AN - SCOPUS:79955887343

SN - 1572-6657

VL - 656

SP - 167

EP - 173

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 1-2

ER -

Photoelectrochemical sensing of glucose based on quantum dot and enzyme nanocomposites

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Keywords

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