Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65431
Title: Copper nanoparticles/polyaniline/graphene composite as a highly sensitive electrochemical glucose sensor
Authors: Zheng, W
Hu, L
Lee, LYS 
Wong, KY 
Keywords: Copper nanoparticles
Glucose electrooxidation
Graphene
Non-enzymatic sensor
Polyaniline
Issue Date: 2016
Publisher: Elsevier
Source: Journal of electroanalytical chemistry, 2016, v. 781, p. 155-160 How to cite?
Journal: Journal of electroanalytical chemistry 
Abstract: A highly sensitive non-enzymatic glucose sensor based on Cu nanoparticles (CuNPs)/polyaniline (PANI)/graphene nanocomposite was fabricated via simple in-situ reduction of Cu precursor in polyaniline nanofibers under mild conditions followed by mechanical mixing with graphene suspension to form the composites with different graphene contents (0.5%, 1%, and 2%). The properties of nanocomposites were characterized by SEM, TEM, XRD, UV–Vis, and XPS. The CuNPs (d = 2–4 nm) only slightly altered the ordered structure of PANI. It was found that CuNPs have direct electronic interaction with PANI via the N atoms on the polymer backbone, which enabled fast electrons transfer from electrode to CuNPs through graphene and PANI. The CuNPs/PANI/graphene nanocomposites were coated on a glassy carbon electrode for the investigation of their electrochemical properties. Both CuNPs/PANI and CuNPs/PANI/graphene showed high sensitivity towards glucose oxidation which occurred at ~ 0.5 V vs. SCE. The best performance was achieved by the CuNPs/PANI/1% graphene-modified electrode which showed sensitivity of ~ 150 mA cm? 2 M? 1, detection limit of 0.27 ?M (S/N = 3), and response time of about 3 s. This system was also highly selective towards glucose oxidation that almost no signal was detected from interferents such as ascorbic acid and dopamine, demonstrating its great potential as a non-enzymatic glucose sensor.
URI: http://hdl.handle.net/10397/65431
ISSN: 1572-6657
DOI: 10.1016/j.jelechem.2016.08.004
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

6
Citations as of Aug 18, 2017

WEB OF SCIENCETM
Citations

4
Last Week
2
Last month
Citations as of Aug 13, 2017

Page view(s)

19
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.