Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles

Yang Liu; Gengzhi Sun; Chunbo Jiang; Xin Ting Zheng; Lianxi Zheng; Chang Ming Li

doi:10.1007/s00604-013-1066-8

Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles

Yang Liu, Gengzhi Sun, Chunbo Jiang, Xin Ting Zheng, Lianxi Zheng, Chang Ming Li

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

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Abstract

We report on a carbon nanotube (CNT) fiber microelectrode coated with palladium nanoparticles (PdNPs) and enabling electrochemical sensing of hydrogen peroxide (H₂O₂). The synergistic effects of the CNT fibers (good mechanical strength and large surface area) and of the PdNPs (high electrocatalytic activity) result in a microelectrode for H₂O₂ that exhibits a 2-s response time, a detection limit as low as 2 μM, a sensitivity of 2.75 A cm^-2 M^-1, and a linear response range from 2 μM to 1.3 mM (R = 0.9994). The sensor is also selective and not interfered by potentially competing species in biological fluids, thus representing an inexpensive but highly sensitive and selective microsensor for H₂O₂. [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	63-70
Number of pages	8
Journal	Microchimica Acta
Volume	181
Issue number	1-2
DOIs	https://doi.org/10.1007/s00604-013-1066-8
State	Published - Jan 2014
Externally published	Yes

Keywords

Carbon nanotube fiber
Hydrogen peroxide
Microelectrode
Palladium nanoparticle
Sensing

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10.1007/s00604-013-1066-8

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title = "Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles",

abstract = "We report on a carbon nanotube (CNT) fiber microelectrode coated with palladium nanoparticles (PdNPs) and enabling electrochemical sensing of hydrogen peroxide (H2O2). The synergistic effects of the CNT fibers (good mechanical strength and large surface area) and of the PdNPs (high electrocatalytic activity) result in a microelectrode for H2O2 that exhibits a 2-s response time, a detection limit as low as 2 μM, a sensitivity of 2.75 A cm-2 M-1, and a linear response range from 2 μM to 1.3 mM (R = 0.9994). The sensor is also selective and not interfered by potentially competing species in biological fluids, thus representing an inexpensive but highly sensitive and selective microsensor for H2O2. [Figure not available: see fulltext.]",

keywords = "Carbon nanotube fiber, Hydrogen peroxide, Microelectrode, Palladium nanoparticle, Sensing",

author = "Yang Liu and Gengzhi Sun and Chunbo Jiang and Zheng, {Xin Ting} and Lianxi Zheng and Li, {Chang Ming}",

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doi = "10.1007/s00604-013-1066-8",

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volume = "181",

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TY - JOUR

T1 - Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles

AU - Liu, Yang

AU - Sun, Gengzhi

AU - Jiang, Chunbo

AU - Zheng, Xin Ting

AU - Zheng, Lianxi

AU - Li, Chang Ming

PY - 2014/1

Y1 - 2014/1

N2 - We report on a carbon nanotube (CNT) fiber microelectrode coated with palladium nanoparticles (PdNPs) and enabling electrochemical sensing of hydrogen peroxide (H2O2). The synergistic effects of the CNT fibers (good mechanical strength and large surface area) and of the PdNPs (high electrocatalytic activity) result in a microelectrode for H2O2 that exhibits a 2-s response time, a detection limit as low as 2 μM, a sensitivity of 2.75 A cm-2 M-1, and a linear response range from 2 μM to 1.3 mM (R = 0.9994). The sensor is also selective and not interfered by potentially competing species in biological fluids, thus representing an inexpensive but highly sensitive and selective microsensor for H2O2. [Figure not available: see fulltext.]

AB - We report on a carbon nanotube (CNT) fiber microelectrode coated with palladium nanoparticles (PdNPs) and enabling electrochemical sensing of hydrogen peroxide (H2O2). The synergistic effects of the CNT fibers (good mechanical strength and large surface area) and of the PdNPs (high electrocatalytic activity) result in a microelectrode for H2O2 that exhibits a 2-s response time, a detection limit as low as 2 μM, a sensitivity of 2.75 A cm-2 M-1, and a linear response range from 2 μM to 1.3 mM (R = 0.9994). The sensor is also selective and not interfered by potentially competing species in biological fluids, thus representing an inexpensive but highly sensitive and selective microsensor for H2O2. [Figure not available: see fulltext.]

KW - Carbon nanotube fiber

KW - Hydrogen peroxide

KW - Microelectrode

KW - Palladium nanoparticle

KW - Sensing

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DO - 10.1007/s00604-013-1066-8

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SN - 0026-3672

VL - 181

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JO - Microchimica Acta

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IS - 1-2

ER -

Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles

Abstract

Keywords

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