Synthesis of carbon nanotube-nickel nanocomposites using atomic layer deposition for high-performance non-enzymatic glucose sensing

Title
Synthesis of carbon nanotube-nickel nanocomposites using atomic layer deposition for high-performance non-enzymatic glucose sensing
Author(s)
김수현최태진[최태진]김수현[김수현]이창완[이창완]김한길최상경김은경[김은경]박주상[박주상]김형준[김형준]
Keywords
ELECTROCATALYTIC OXIDATION; MODIFIED ELECTRODE; BIOSENSOR; NANOPARTICLES; GRAPHENE; GROWTH; NANOWIRES; CATALYST; ENZYME; NANOMATERIALS
Issue Date
201501
Publisher
ELSEVIER ADVANCED TECHNOLOGY
Citation
BIOSENSORS & BIOELECTRONICS, v.63, pp.325 - 330
Abstract
A useful strategy has been developed to fabricate carbon-nanotube-nickel (CNT-Ni) nanocomposites through atomic layer deposition (ALD) of Ni and chemical vapor deposition (CVD) of functionalized CNTs. Various techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), were used to characterize the morphology and the structure of as-prepared samples. It was confirmed that the products possess uniform Ni nanoparticles that are constructed by finely controlled deposition of Ni onto oxygen or bromine functionalized CNT surface. Electrochemical studies indicate that the CNT-Ni nanocomposites exhibit high electrocatalytic activity for glucose oxidation in alkaline solutions, which enables the products to be used in enzyme-free electrochemical sensors for glucose determination. It was demonstrated that the CNT-Ni glucose biosensor offers a variety of merits, such as a wide linear response window for glucose concentrations of 5 mu M-2 mM, short response time (3 s), a low detection limit (2 mu M), high sensitivity (1384.1 mu A mM(-1) cm(-2)), and good selectivity and repeatability. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33747http://dx.doi.org/10.1016/j.bios.2014.07.059
ISSN
0956-5663
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공과대학 > 신소재공학부 > Articles
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