Preparation and characterization of reduced graphene oxide/Fe3O4 nanocomposite by a facile in-situ deposition method for glucose biosensor applications. (May 2018)

• Record Type: Journal Article
• Authors: Wang, Yan; Liu, Xin-yu; Xu, Xiang; Yang, Yi; Huang, Li-hong; He, Zhen-yu; Xu, You-he; Chen, Jin-ju; Feng, Zhe-sheng
• Is Part Of: Materials research bulletin. Volume 101(2018)
• Page Start: 340
• Page End: 346
• Publication Date: 2018-05
• Subjects: A. Composites -- A. Oxides -- B. Chemical synthesis -- C. X-ray diffraction -- D. Catalytic properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.01.035
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: The rGO/Fe3 O4 nanocomposite is successfully prepared by in-situ deposition. The rGO/Fe3 O4 nanocomposite can provide an accelerated electron transfer of GOx. The rGO/Fe3 O4 /GOx/GCE exhibits excellent performance for glucose biosensing. Abstract: In this work, the reduced graphene oxide-Fe3 O4 nanocomposite (rGO/Fe3 O4 ) was prepared by a facile in-situ deposition of Fe3 O4 nanoparticles on graphene sheets. The fact that graphene oxide (GO) was completely reduced to graphene by Fe 2+ was evidenced by X-ray diffractometer, ultraviolet visible spectrophotometer, Fourier transform infrared spectrometer and X-ray photoelectron spectroscopy. The results showed Fe3 O4 nanoparticles were generated uniformly and bonded on the surface of rGO with a particle size of about 50 nm. In addition, the rGO/Fe3 O4 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/Fe3 O4 /GOx/GCE exhibited a fast electron transfer and good electrocatalytic activity due to the good electrochemical properties of the rGO/Fe3 O4 nanocomposite. These results demonstrated that the rGO/Fe3 O4 nanocomposite prepared by in-situ deposition could be applied to high performance biosensor for glucose detection.