Reduced Graphene Oxide-Coated Silica Nanospheres as Flexible Enzymatic Biosensors for Detection of Glucose in Sweat

2021 ◽  
Author(s):  
Mengyi Xu ◽  
Ye Zhu ◽  
Shanhui Gao ◽  
Zhixing Zhang ◽  
Yuxuan Gu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Silica Nanospheres ◽  
Reduced Graphene ◽  
Enzymatic Biosensors

Building up nanostructured layer-by-layer films combining reduced graphene oxide-manganese dioxide nanocomposite in supercapacitor electrodes

2021 ◽  
Vol 718 ◽  
pp. 138483
Author(s):  
Danilo A. Oliveira ◽  
Jodie L. Lutkenhaus ◽  
José R. Siqueira
Keyword(s):  
Graphene Oxide ◽  
Manganese Dioxide ◽  
Reduced Graphene Oxide ◽  
Layer By Layer ◽  
Reduced Graphene ◽  
Nanostructured Layer

High Toughness Inorganic Solid Electrolytes via the Use of Reduced Graphene-Oxide

2020 ◽  
Author(s):  
Christos E. Athanasiou ◽  
Mok Yun Jin ◽  
Cristina Ramirez ◽  
Nitin P. Padture ◽  
Brian W. Sheldon
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solid Electrolytes ◽  
High Toughness ◽  
Reduced Graphene

REDUCED GRAPHENE OXIDE AS REINFORCEMENT IN ALUMINIUM NANOCOMPOSITES PREPARED BY POWDER METALLURGY

2018 ◽  
Author(s):  
D. M. Andrada ◽  
T. M. Serodre ◽  
A. P. Santos ◽  
C. A. Furtado
Keyword(s):  
Graphene Oxide ◽  
Powder Metallurgy ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Direct growth of thermally reduced graphene oxide on carbon fiber for enhanced mechanical strength

2020 ◽  
Vol 193 ◽  
pp. 108010
Author(s):  
Beom-Gon Cho ◽  
Shalik Ram Joshi ◽  
Jaekyo Lee ◽  
Young-Bin Park ◽  
Gun-Ho Kim
Keyword(s):  
Graphene Oxide ◽  
Carbon Fiber ◽  
Mechanical Strength ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Direct Growth

scholarly journals Graphene Oxide: A Smart (Starting) Material for Natural Methylxanthines Adsorption and Detection

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4247 ◽  
Author(s):  
Rita Petrucci ◽  
Isabella Chiarotto ◽  
Leonardo Mattiello ◽  
Daniele Passeri ◽  
Marco Rossi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Nucleic Acids ◽  
Reduced Graphene Oxide ◽  
Electrochemical Sensors ◽  
Enzymatic Digestion ◽  
Biologically Active ◽  
Polar Solvents ◽  
Dna And Rna ◽  
Reduced Graphene

Natural methylxanthines, caffeine, theophylline and theobromine, are widespread biologically active alkaloids in human nutrition, found mainly in beverages (coffee, tea, cocoa, energy drinks, etc.). Their detection is thus of extreme importance, and many studies are devoted to this topic. During the last decade, graphene oxide (GO) and reduced graphene oxide (RGO) gained popularity as constituents of sensors (chemical, electrochemical and biosensors) for methylxanthines. The main advantages of GO and RGO with respect to graphene are the easiness and cheapness of synthesis, the notable higher solubility in polar solvents (water, among others), and the higher reactivity towards these targets (mainly due to – interactions); one of the main disadvantages is the lower electrical conductivity, especially when using them in electrochemical sensors. Nonetheless, their use in sensors is becoming more and more common, with the obtainment of very good results in terms of selectivity and sensitivity (up to 5.4 × 10−10 mol L−1 and 1.8 × 10−9 mol L−1 for caffeine and theophylline, respectively). Moreover, the ability of GO to protect DNA and RNA from enzymatic digestion renders it one of the best candidates for biosensors based on these nucleic acids. This is an up-to-date review of the use of GO and RGO in sensors.

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