Architecture of Fe3O4–graphene oxide nanocomposite and its application as a platform for amino acid biosensing

Hybrid Nanomaterials of Magnetic Iron Nanoparticles and Graphene Oxide as Matrices for the Immobilization of β-Glucosidase: Synthesis, Characterization, and Biocatalytic Properties

“…The combined characteristics of GO and iron nanoparticles result in the development of a larger surface area of nanosupport (Zubir et al, 2014), as the presence of γFe can act as a spacer to prevent the stacking of GO sheets, avoiding the loss of its high active surface area (Novoselov et al, 2005). Moreover, GO prevents the agglomeration of nanoparticles and enables their distribution (He et al, 2013), leading to the formation of a large total surface area (Su et al, 2011;Song et al, 2012). The enhanced surface area of these hybrid nanomaterials could facilitate the development of specific interactions with enzyme molecules, resulting thus to the formation of more robust nanobiocatalysts.…”

Hierarchical NiO Superstructures/Foam Ni Electrode Derived from Ni Metal-Organic Framework Flakes on Foam Ni for Glucose Sensing

“…The kinetics parameters of hierarchical NiO superstructures/ foam Ni electrode were measured by chronoamperograms under suitable working potentials [44]. As shown in Fig.…”

An electrochemical sensor for sensitive determination of nitrites based on Ag–Fe3O4–graphene oxide magnetic nanocomposites

“…Ferromagnetic nanomaterials usually provide many biologically attractive features (Novoselov et al, 2005) as well as the catalytic ability to reduce hydrogen peroxide (H 2 O 2 ) (Ye et al, 2012); however, in practical applications, the use of pure ferromagnetic materials is limited . The combination of GO with ferromagnetic materials (Fe 3 O 4 -GO) has been extensively employed in the development of electrochemical sensors because of their good biocompatibility, catalytic activity, good adsorption properties, and low cost (Song et al, 2012;Teymourian et al, 2013). Ag nanoparticles (AgNPs) have attracted a considerable interest in the development of novel electrochemical sensors because of their large surface-to-volume ratio and high electrocatalytic activity (Ensafi et al, 2014;Zhao et al, 2009).…”