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Chemical, synthesis, characterization and electrochemical properties of α-Fe2O3/ZnO composite nano-heterojunction for sensing application
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-1829-8138
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8985-0604
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-3190-2774
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2024 (English)In: NANO SELECT, ISSN 2688-4011, article id e2300155Article in journal (Refereed) Epub ahead of print
Abstract [en]

Low temperature hydrothermal methods have been utilized to synthesize Hematite/Zinc oxide alpha-Fe2O3/ZnO composite nano-heterojunction nanorods grown on FTO glass substrates while monitoring the effect of different concentrations of urea on the morphology of the composite nano-heterojunction. X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were used for the structural characterization of the alpha-Fe2O3/ZnO different samples. UV-visible spectroscopy was used for the characteristic absorbance versus wavelength of alpha-Fe2O3/ZnO composite nano-heterojunction which shows an absorption edge from 400 to 560 nm. X-ray photoelectron spectroscopy (XPS) technique was applied to study of chemical composition of the alpha-Fe2O3/ZnO and the obtained information demonstrated a pure phase alpha-Fe2O3/ZnO has been achieved. The best efficiency among urea concentrations for the best composite nano-heterojunction sample was achieved when using 0.2 M of urea. The electrochemical properties of the composite nano-heterojunction were investigated using a three-electrode electrochemical cell. Estimation of the electrochemical area shows that both the composite nano-heterojunction and the bare alpha-Fe2O3 have similar values. This confirms that the enhanced electrochemical property of the composite nano-heterojunction is due to a synergetic effect as expected.

Place, publisher, year, edition, pages
WILEY , 2024. article id e2300155
Keywords [en]
characterization; composite nano-heterojuction; electrochemical properties; hydrothermal method; synthesis
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-202239DOI: 10.1002/nano.202300155ISI: 001194039000001OAI: oai:DiVA.org:liu-202239DiVA, id: diva2:1849724
Note

Funding Agencies|Sida-Cambodia Bilateral Program

Available from: 2024-04-08 Created: 2024-04-08 Last updated: 2024-04-08

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Ngok, SreymeanRazmi, NasrinMustafa, Elfatih MohammedLiu, XianjieWillander, MagnusNur, Omer
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Physics, Electronics and MathematicsFaculty of Science & EngineeringLaboratory of Organic Electronics
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