Photoelectronic properties of horseradish peroxidase-functionalized CdSe/silica mesoporous composite and its sensing towards hydrogen peroxide

Xiaoling Yang; Ping Wang; Yihua Zhu; Chunzhong Li

doi:10.1007/s10008-010-1147-0

Photoelectronic properties of horseradish peroxidase-functionalized CdSe/silica mesoporous composite and its sensing towards hydrogen peroxide

Xiaoling Yang, Ping Wang, Yihua Zhu, Chunzhong Li

Bioproducts and Biosystems Engineering

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

11 Scopus citations

Abstract

CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction, and then the as-synthesized CdSe/MS composites were dip coated on an optically transparent electrode. The photoelectric properties of CdSe/MS composite film were examined under ultraviolet (UV) illumination at the excitation wavelength of 365 nm. The CdSe/MS composite can facilitate charge rectification and minimize charge recombination as shown by its higher photocurrent. Most importantly, horseradish peroxidase (HRP)-functionalized CdSe/MS-modified electrode (HRP/CdSe/MS) had a stronger response toward hydrogen peroxide (H ₂O ₂) under UV illumination than in the dark. The result demonstrates the potential application of HRP/CdSe/MS composite film as a novel biosensor for monitoring H ₂O ₂ under UV illumination.

Original language	English (US)
Pages (from-to)	731-736
Number of pages	6
Journal	Journal of Solid State Electrochemistry
Volume	15
Issue number	4
DOIs	https://doi.org/10.1007/s10008-010-1147-0
State	Published - Apr 2011

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (20925621, 20976054), the Key Project of Science and Technology for Ministry of Education (107045), the Innovation Program of Shanghai Municipal Education Commission (09ZZ58), the Program of Shanghai Subject Chief Scientist (08XD1401500), the Shuguang Scholar-Tracking Foundation of Shanghai (08GG09), and the Shanghai Leading Academic Discipline Project (B502).

Keywords

Biosensors
CdSe/silica mesoporous
Horseradish peroxidase
Photoelectric properties

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title = "Photoelectronic properties of horseradish peroxidase-functionalized CdSe/silica mesoporous composite and its sensing towards hydrogen peroxide",

abstract = "CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction, and then the as-synthesized CdSe/MS composites were dip coated on an optically transparent electrode. The photoelectric properties of CdSe/MS composite film were examined under ultraviolet (UV) illumination at the excitation wavelength of 365 nm. The CdSe/MS composite can facilitate charge rectification and minimize charge recombination as shown by its higher photocurrent. Most importantly, horseradish peroxidase (HRP)-functionalized CdSe/MS-modified electrode (HRP/CdSe/MS) had a stronger response toward hydrogen peroxide (H 2O 2) under UV illumination than in the dark. The result demonstrates the potential application of HRP/CdSe/MS composite film as a novel biosensor for monitoring H 2O 2 under UV illumination.",

keywords = "Biosensors, CdSe/silica mesoporous, Horseradish peroxidase, Photoelectric properties",

author = "Xiaoling Yang and Ping Wang and Yihua Zhu and Chunzhong Li",

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AU - Zhu, Yihua

AU - Li, Chunzhong

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (20925621, 20976054), the Key Project of Science and Technology for Ministry of Education (107045), the Innovation Program of Shanghai Municipal Education Commission (09ZZ58), the Program of Shanghai Subject Chief Scientist (08XD1401500), the Shuguang Scholar-Tracking Foundation of Shanghai (08GG09), and the Shanghai Leading Academic Discipline Project (B502).

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N2 - CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction, and then the as-synthesized CdSe/MS composites were dip coated on an optically transparent electrode. The photoelectric properties of CdSe/MS composite film were examined under ultraviolet (UV) illumination at the excitation wavelength of 365 nm. The CdSe/MS composite can facilitate charge rectification and minimize charge recombination as shown by its higher photocurrent. Most importantly, horseradish peroxidase (HRP)-functionalized CdSe/MS-modified electrode (HRP/CdSe/MS) had a stronger response toward hydrogen peroxide (H 2O 2) under UV illumination than in the dark. The result demonstrates the potential application of HRP/CdSe/MS composite film as a novel biosensor for monitoring H 2O 2 under UV illumination.

AB - CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction, and then the as-synthesized CdSe/MS composites were dip coated on an optically transparent electrode. The photoelectric properties of CdSe/MS composite film were examined under ultraviolet (UV) illumination at the excitation wavelength of 365 nm. The CdSe/MS composite can facilitate charge rectification and minimize charge recombination as shown by its higher photocurrent. Most importantly, horseradish peroxidase (HRP)-functionalized CdSe/MS-modified electrode (HRP/CdSe/MS) had a stronger response toward hydrogen peroxide (H 2O 2) under UV illumination than in the dark. The result demonstrates the potential application of HRP/CdSe/MS composite film as a novel biosensor for monitoring H 2O 2 under UV illumination.

KW - Biosensors

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KW - Horseradish peroxidase

KW - Photoelectric properties

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Photoelectronic properties of horseradish peroxidase-functionalized CdSe/silica mesoporous composite and its sensing towards hydrogen peroxide

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