Photoelectrochemical CdSe/TiO2 nanotube array microsensor for high-resolution in-situ detection of dopamine

Caidie Qin; Xue Bai; Yue Zhang; Kai Gao

doi:10.1007/s00604-018-2788-4

Photoelectrochemical CdSe/TiO₂ nanotube array microsensor for high-resolution in-situ detection of dopamine

Caidie Qin
, Xue Bai
, Yue Zhang
, Kai Gao

Hohai University
University of North Carolina at Wilmington
Aerodyne Research, Inc.

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

23 Scopus citations

Abstract

A photoelectrochemical wire microelectrode was constructed based on the use of a TiO₂ nanotube array with electrochemically deposited CdSe semiconductor. A strongly amplified photocurrent is generated on the sensor surface. The microsensor has a response in the 0.05–20 μM dopamine (DA) concentration range and a 16.7 μM detection limit at a signal-to-noise ratio of 3. Sensitivity, recovery and reproducibility of the sensor were validated by detecting DA in spiked human urine, and satisfactory results were obtained. [Figure not available: see fulltext.].

Original language	English
Article number	278
Journal	Microchimica Acta
Volume	185
Issue number	5
DOIs	https://doi.org/10.1007/s00604-018-2788-4
State	Published - May 1 2018
Externally published	Yes

Keywords

Dopamine
Electron-hole pairs seperation
Photocalysis
TiO nanotube array

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10.1007/s00604-018-2788-4

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title = "Photoelectrochemical CdSe/TiO2 nanotube array microsensor for high-resolution in-situ detection of dopamine",

abstract = "A photoelectrochemical wire microelectrode was constructed based on the use of a TiO2 nanotube array with electrochemically deposited CdSe semiconductor. A strongly amplified photocurrent is generated on the sensor surface. The microsensor has a response in the 0.05–20 μM dopamine (DA) concentration range and a 16.7 μM detection limit at a signal-to-noise ratio of 3. Sensitivity, recovery and reproducibility of the sensor were validated by detecting DA in spiked human urine, and satisfactory results were obtained. [Figure not available: see fulltext.].",

keywords = "Dopamine, Electron-hole pairs seperation, Photocalysis, TiO nanotube array",

author = "Caidie Qin and Xue Bai and Yue Zhang and Kai Gao",

note = "Publisher Copyright: {\textcopyright} 2018, Springer-Verlag GmbH Austria, part of Springer Nature.",

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T1 - Photoelectrochemical CdSe/TiO2 nanotube array microsensor for high-resolution in-situ detection of dopamine

AU - Qin, Caidie

AU - Bai, Xue

AU - Zhang, Yue

AU - Gao, Kai

PY - 2018/5/1

Y1 - 2018/5/1

N2 - A photoelectrochemical wire microelectrode was constructed based on the use of a TiO2 nanotube array with electrochemically deposited CdSe semiconductor. A strongly amplified photocurrent is generated on the sensor surface. The microsensor has a response in the 0.05–20 μM dopamine (DA) concentration range and a 16.7 μM detection limit at a signal-to-noise ratio of 3. Sensitivity, recovery and reproducibility of the sensor were validated by detecting DA in spiked human urine, and satisfactory results were obtained. [Figure not available: see fulltext.].

AB - A photoelectrochemical wire microelectrode was constructed based on the use of a TiO2 nanotube array with electrochemically deposited CdSe semiconductor. A strongly amplified photocurrent is generated on the sensor surface. The microsensor has a response in the 0.05–20 μM dopamine (DA) concentration range and a 16.7 μM detection limit at a signal-to-noise ratio of 3. Sensitivity, recovery and reproducibility of the sensor were validated by detecting DA in spiked human urine, and satisfactory results were obtained. [Figure not available: see fulltext.].

KW - Dopamine

KW - Electron-hole pairs seperation

KW - Photocalysis

KW - TiO nanotube array

UR - https://www.scopus.com/pages/publications/85046646455

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DO - 10.1007/s00604-018-2788-4

M3 - Article

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AN - SCOPUS:85046646455

SN - 0026-3672

VL - 185

JO - Microchimica Acta

JF - Microchimica Acta

IS - 5

M1 - 278

ER -

Photoelectrochemical CdSe/TiO₂ nanotube array microsensor for high-resolution in-situ detection of dopamine

Abstract

Keywords

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