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

Liu, Yang, Sun, Gengzhi, Jiang, Chunbo, Zheng, Xin Ting, Zheng, Lianxi, and Li, Chang Ming (2014) Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles. Microchimica Acta, 181 (1-2). pp. 63-70.

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DOI: 10.1007/s00604-013-1066-8

View at Publisher Website: https://doi.org/10.1007/s00604-013-1066-...

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 H2 2 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.


Item ID:	53255
Item Type:	Article (Research - C1)
ISSN:	1436-5073
Keywords:	hydrogen peroxide, sensing, palladium nanoparticle, carbon nanotube fiber, microelectrode
Funders:	Nanyang Technological University, Singapore, Southwest University, China
Date Deposited:	19 Apr 2018 23:41
FoR Codes:	03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030102 Electroanalytical Chemistry @ 50% 03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl Structural) > 030604 Electrochemistry @ 50%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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