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Bifunctional (Zn,Fe)3O4 nanoparticles: Tuning their efficiency for potential application in reagentless glucose biosensors and magnetic hyperthermia

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2019
10.1016@j.jallcom.2018.10.369.pdf (2.350Mb)
Authors
Ognjanović, Miloš
Stanković, Dalibor
Ming, Y.
Zhang, H.
Jančar, Boštjan
Dojčinović, Biljana
Prijović, Ž.
Antić, Bratislav
Article (Accepted Version)
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Abstract
In a new approach based on a two-step procedure, co-precipitation method followed by hydrothermal treatment in a microwave field, Zn-substituted Fe3O4 nanoparticles (ZnxFe3-xO4) were synthesized. Results of XRD, FT–IR and TEM analysis clearly demonstrate that nanoparticles were single phase, crystallizing in the spinel structure type (S.G. Fd3¯m) with crystallite size in the range of 2–20 nm, which strongly depends on Zn concentration. The produced nanoparticles were used for fabrication of modified carbon paste electrodes as a novel system for electrochemical non-enzymatic glucose detection. It was found that the increase of zinc concentration up to the value of x = 0.56 (Zn0.56Fe2.44O4) of as-prepared nanoparticles was followed with an increase of a performance of the modified carbon paste electrode toward glucose detection. Linear working range from 0.1 to 2 mM was obtained with detection limit of 0.03 mM, and with fast response time (<3 s). Proposed sensor was successfully appli...ed for the determination of glucose level in real samples with satisfactory recovery. The synthesized zinc-ferrite samples were also tested as potential heating agents in magnetic hyperthermia. The heating ability (SAR value) increases with x value, reaching maximum for x = 0.37. This is correlated with changes of particle size and magnetic characteristics which strongly depend on Zn concentration.

Keywords:
Carbon electrodes / Glucose sensor / Hyperthermia / MW hydrothermal synthesis / Structural characterization
Source:
Journal of Alloys and Compounds, 2019, 454-462
Publisher:
  • Elsevier Ltd
Projects:
  • Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials (EU-621375)
  • Ministry of Education, Science and Technological Development of the Republic of Serbia through the Eureka Project, E!9982
Note:
  • http://cer.ihtm.bg.ac.rs/handle/123456789/2501

DOI: 10.1016/j.jallcom.2018.10.369

ISSN: 0925-8388

WoS: 000454856800055

Scopus: 2-s2.0-85056178941
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2501
http://cer.ihtm.bg.ac.rs/handle/123456789/2624
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