Nanohexagonal iron barium titanate nanoparticles surface-modified NiFe 2 O 4 composite screen-printed electrode for enzymatic glucose monitoring.

Autor: Magar HS; Applied Organic Chemistry Department, National Research Centre (NRC) Dokki Giza 12622 Egypt hendamer2000@yahoo.com +201121926682., El Nahrawy AM; Solid State Physics Department, Physics Research Division, National Research Centre 33 El Bohouth St., Dokki Giza 12622 Egypt., Hassan RYA; Applied Organic Chemistry Department, National Research Centre (NRC) Dokki Giza 12622 Egypt hendamer2000@yahoo.com +201121926682.; Biosensors Research Lab, University of Science and Technology (UST), Zewail City of Science and Technology 6th October City Giza 12578 Egypt., Abou Hammad AB; Solid State Physics Department, Physics Research Division, National Research Centre 33 El Bohouth St., Dokki Giza 12622 Egypt.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Nov 01; Vol. 14 (47), pp. 34948-34963. Date of Electronic Publication: 2024 Nov 01 (Print Publication: 2024).
DOI: 10.1039/d4ra06689h
Abstrakt: A nanocomposite of iron barium titanate/NiFe 2 O 4 (FBT/NF) was synthesized using sol-gel techniques to form organized hexagonal structures. The effects of NiFe 2 O 4 nanostructures on FBT's phase purity, morphology, and dielectric properties were systematically explored and intensively discussed. TEM imaging confirmed the hexagonal structure, and electrical measurements revealed that para-electric NF influenced the conductivity and impedance of ferroelectric FBT, with a shift in Curie temperature to lower values. The FBT/NF nanocomposite was optimized for use in glucose amperometric biosensors, offering fast and direct electron transfer from glucose oxidase that was chemically immobilized on disposable sensor chips. Thus, the biosensor exhibited high sensitivity (757.14 μA mM -1 cm -2 ), a fast response time of 50 seconds, and a wide linear range of 0.0027-1.9 mM with a low detection limit of 0.5 μM. Accordingly, the biosensor was exploited for blood glucose detection, showing high precision compared to reference methods. These findings highlighted the potential of the FBT/NF nanocomposite for use in developing biosensor portable devices.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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