The ethylene glycol template assisted hydrothermal synthesis of Co3O4 nanowires; structural characterization and their application as glucose non-enzymatic sensor
2015 (English)In: Materials Science & Engineering: B. Solid-state Materials for Advanced Technology, ISSN 0921-5107, Vol. 194, 94-100 p.Article in journal (Refereed) Published
In the work reported herein the ethylene glycol template assisted hydrothermal synthesis, onto Au substrate, of thin and highly dense cobalt oxide (Co3O4) nanowires and their characterization and their application for non-enzymatic glucose sensing are reported. The structure and composition of Co3O4 nanowires have been fully characterized using scanning electron microscopy, X-ray diffraction, high resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The synthesized Co3O4 nanowires resulted to have high purity and showed diameter of approximately 10 nm. The prepared Co3O4 nanowires coated gold electrodes were applied to the non-enzymatic detection of glucose. The developed sensor showed high sensitivity (4.58 x 10(1) mu A mM(-1) cm(-2)), a wide linear range of concentration (1.00 x 10(-4)-1.2 x 10(1) mM) and a detection limit of 2.65 x 10(-5) mM. The developed glucose sensor has also shown to be very stable and selective over interferents such as uric acid and ascorbic acid. Furthermore, the proposed fabrication process was shown to be highly reproducible response (over nine electrodes).
Place, publisher, year, edition, pages
Elsevier , 2015. Vol. 194, 94-100 p.
Non-enzymatic glucose sensor; Co3O4 nanowires; Template assisted hydrothermal synthesis; Amperometry; Ethylene glycol
Electrical Engineering, Electronic Engineering, Information Engineering Biological Sciences
IdentifiersURN: urn:nbn:se:liu:diva-116815DOI: 10.1016/j.mseb.2015.01.001ISI: 000350091600014OAI: oai:DiVA.org:liu-116815DiVA: diva2:800766
Funding Agencies|International Science Programme (IPPS), Uppsala University, Sweden [CAM:01]; Royal University of Phnom Penh (RUPP), Cambodia2015-04-072015-04-072015-04-07