Preparation and characterization of reduced graphene oxide/Fe3O4 nanocomposite by a facile in-situ deposition method for glucose biosensor applications

Journal Article · Tue May 15 00:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.01.035· OSTI ID:22803974

Wang, Yan; Liu, Xin-yu; Xu, Xiang; Yang, Yi ^[1]; Huang, Li-hong ^[1]; He, Zhen-yu; Xu, You-he; Chen, Jin-ju; Feng, Zhe-sheng ^[1]

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1. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 610054 (China)

Highlights: • The rGO/Fe{sub 3}O{sub 4} nanocomposite is successfully prepared by in-situ deposition. • The rGO/Fe{sub 3}O{sub 4} nanocomposite can provide an accelerated electron transfer of GOx. • The rGO/Fe{sub 3}O{sub 4}/GOx/GCE exhibits excellent performance for glucose biosensing. - Abstract: In this work, the reduced graphene oxide-Fe{sub 3}O{sub 4} nanocomposite (rGO/Fe{sub 3}O{sub 4}) was prepared by a facile in-situ deposition of Fe{sub 3}O{sub 4} nanoparticles on graphene sheets. The fact that graphene oxide (GO) was completely reduced to graphene by Fe{sup 2+} was evidenced by X-ray diffractometer, ultraviolet visible spectrophotometer, Fourier transform infrared spectrometer and X-ray photoelectron spectroscopy. The results showed Fe{sub 3}O{sub 4} nanoparticles were generated uniformly and bonded on the surface of rGO with a particle size of about 50 nm. In addition, the rGO/Fe{sub 3}O{sub 4} nanocomposite showed a good conductivity and was considered as a high volume-surface ratio matrix for the immobilization of glucose oxidase (GOx) on a glassy carbon electrode (GCE). The fabricated rGO/Fe{sub 3}O{sub 4}/GOx/GCE exhibited a fast electron transfer and good electrocatalytic activity due to the good electrochemical properties of the rGO/Fe{sub 3}O{sub 4} nanocomposite. These results demonstrated that the rGO/Fe{sub 3}O{sub 4} nanocomposite prepared by in-situ deposition could be applied to high performance biosensor for glucose detection.

• OSTI ID: 22803974
• Journal Information: Materials Research Bulletin, Vol. 101; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTROCHEMISTRY
ELECTRODES
ELECTRON TRANSFER
FOURIER TRANSFORM SPECTROMETERS
GLUCOSE
GRAPHENE
INFRARED SPECTROMETERS
IRON IONS
IRON OXIDES
NANOCOMPOSITES
OXIDASES
PARTICLE SIZE
SPECTROPHOTOMETERS
SURFACE COATING
ULTRAVIOLET SPECTROMETERS
X-RAY DIFFRACTOMETERS
X-RAY PHOTOELECTRON SPECTROSCOPY