Elucidating the roles of oxygen functional groups and defect density of electrochemically exfoliated GO on the kinetic parameters towards furazolidone detection

Abstract

In this study, we have investigated the role of changes in the microstructure of graphene oxide (GO) on the analytical kinetic parameters of GO-based electrochemical sensors for detection of furazolidone (FZD) antibiotic drug.

Enhanced sensing performance of carbaryl pesticide by employing a MnO2/GO/e-Ag-based nanoplatform: role of graphene oxide as an adsorbing agent in the SERS analytical performance

“…GO was synthesized based on previous research. 20 The above-mixed solutions were ultrasonicated for 30 min. Next, a defined volume of e-AgNPs solution (1 mg mL −1 ) was added to the above mixture solution and mixed well with magnetic stirring for 30 min.…”

“…Manganese dioxide (MnO 2 ) nanosheets, graphene oxide (GO) nanosheets, and e-Ag nanoparticles were synthesized as per our group's previous research. 13,20 Cabarryl (CBR), tricyclazole (TCZ), chloramphenicol (CAP), methylene blue (MB), and 4 nitrophenol (4-NP) were provided by Sigma-Aldrich. All chemicals were used directly without further purication.…”

“…In this work, we employed MnO 2 nanosheets, GO nanosheets, and e-AgNPs, which were successfully fabricated as described in our previous studies, 13,20 to prepare ternary nanostructures via two simple steps: First, the MnO 2 /GO structure was created using ultrasonication, followed by the graing of e-AgNPs onto that structure by stirring. The detailed preparation is shown in Scheme 1.…”

Boosting the ultraviolet shielding and thermal retardancy properties of unsaturated polyester resin by employing electrochemically exfoliated e-GO nanosheets

“…The e-GO nanosheets were exfoliated by using a electrochemical method, as reported in the previous study. 39 Two pure identical graphite plates were immersed in a 700 mL glass beaker filled with an electrolyte consisting of 0.1 M ammonium sulfate (NH 4 ) 2 SO 4 aqueous solution. Subsequently, a direct current (DC) voltage source (7 V) was supplied to the anode and cathode electrodes under magnetic stirring for 8 hours.…”

An Optimized MnO2-Ag Nanocomposite-Based Sensing Platform for Determination of 4-nitrophenol in Tomato Samples: Influences of Morphological Aspect of MnO2 Nanostructures and Synergic Effect on Electrochemical Kinetic Parameters and Analytical Performance

“…This approach has not only been widely mentioned and attracted at bare screen-printed electrodes (SPEs) in particular and other commercial electrodes, in general. A series of materials have been investigated and evaluated such as metal/metal oxides (Au, 1 Ag, 2 ZnO, 3,4 Cu x O, 5 Fe x O y , 6 MoS 2 , 7 MnO 2 , [8] etc); carbonaceous materials (graphene, graphene oxides (GO), 9 carbon nanotubes, and carbon dots); conducting polymers; 10 ); metal-organic frameworks (MOFs); 13 even their composite structures (Au@Graphene, 14 MoS 2 @GO, 15,16 Ag-Fe 3 O 4 , 17 MnO 2 -graphene 18,19 ). Not an exception to that trend, both MnO 2 nanomaterials and Ag nanoparticles (AgNPs) have been used to modify electrode surfaces thanks to their unique features (low cost, high activity, nontoxicity, high electronic conductivity, biocompatibility, easy preparation, and tunable electrochemical redox chemistry).…”