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Habit-modifying additives and their morphological consequences on photoluminescence and glucose sensing properties of ZnO nanostructures, grown via aqueous chemical synthesis
Linköping University, Department of Science and Technology.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-6235-7038
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2015 (English)In: Vacuum, ISSN 0042-207X, E-ISSN 1879-2715, Vol. 116, 21-26 p.Article in journal (Refereed) Published
Abstract [en]

Generally, the anisotropic shape of inorganic nano-crystal can be influenced by one or more of different parameters i.e. kinetic energy barrier, temperature, time, and the nature of the capping molecules. Here, different surfactants acting as capping molecules were used to assist the aqueous chemical growth of zinc oxide (ZnO) nanostructures on Au coated glass substrates. The morphology, crystal quality and the photoluminescence (PL) properties of the ZnO nanostructures were investigated. The PL properties of the prepared ZnO nanostructures at room temperature showed a dominant UV luminescence peak, while the "green yellow" emissions were essentially suppressed. Moreover, the ZnO nanostructures were investigated for the development of a glucose biosensor. An adsorbed molecule has direct contribution on the glucose oxidase/ZnO/Au sensing properties. We show that the performance of a ZnO-based biosensor can be improved by tailoring the properties of the ZnO biomolecule interface through engineering of the morphology, effective surface area, and adsorption capability.

Place, publisher, year, edition, pages
Elsevier , 2015. Vol. 116, 21-26 p.
Keyword [en]
ZnO nanostructures; Cationic and anionic molecules; PL spectra; Glucose sensitivity
National Category
Physical Chemistry
URN: urn:nbn:se:liu:diva-119245DOI: 10.1016/j.vacuum.2015.02.026ISI: 000354582900004OAI: diva2:821235

Funding Agencies|University of Kordofan Grant, El-Obeid, Kordofan Sudan [700]

Available from: 2015-06-15 Created: 2015-06-12 Last updated: 2015-07-02

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Elhag, SamiIbupoto, Zafar HussainKhranovskyy, VolodymyrWillander, MagnusNour, Omer
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