A novel composite film derived from cysteic acid and PDDA-functionalized graphene: Enhanced sensing material for electrochemical determination of metronidazole

Synthesis of PtNi Alloy Nanoparticles on Graphene-Based Polymer Nanohybrids for Electrocatalytic Oxidation of Methanol

“…Therefore, the addition of transition metal-based catalysts of Ni atom will be considered as a potential alternative owing to their durability and cheaper costs than Ru atom. On the other hand, the enhancement of MOR has been found by carbon-based electrocatalysts, involved the synthesis of electrocatalysts with varied shapes of carbon-based materials supporting, such as C60 nanoparticles, carbon nanotubes, and graphene nanosheets [12][13][14][15][16][17][18][19][20].…”

“…Poly(diallyldimethylammonium chloride) (PDDA) has recently been used to form the layer-to-layer structure to modify the graphene surface by non-covalent bonding or π-π interaction [17,18]. Moreover, PDDA immobilized on the carbon nanotubes has been demonstrated [19] to enhance water dispersibility of carbon nanotubes.…”

Construction of a highly sensitive NADH sensing platform based on PDDA-rGO nanocomposite modified electrode

“…Among these carbon nanomaterials, graphene, a twodimensional monolayer of carbon atoms parked into a dense hexagonal network structure, has received considerable attention due to its exciting properties such as electro-catalysis, high conductivity, large specific surface area, and excellent chemical stability [22]. For the largescale production of graphene in low cost, various chemical methods with different reducing agents such as hydrazine, sodium borohydride, and ascorbic acid have been used in the past for the reduction of GO [23,24]. However, most of these are time consuming and involve toxic reducing agents and non-eco-friendly solvents.…”

“…However, most of these are time consuming and involve toxic reducing agents and non-eco-friendly solvents. Furthermore, as-prepared graphene by this way usually shows poor dispersibility in aqueous solution due to agglomerate irreversibly through van der Waals interactions [24]. In view of these aspects, the methods of developing eco-friendly, simple operation and easy to disperse graphene are expected to create more opportunity for biological sensing applications [25].…”

Biomimetic sensor based on copper-poly(cysteine) film for the determination of metronidazole

“…In view of the above, establishing simple, sensitive, and reliable methods for the determination of metronidazole is urgently needed and meaningful for the environmental protection. Because metronidazole contains a nitro group, which can serve as a redox-active centers, electrochemical methods have been used to monitor its concentration [5][6][7][8][9][10]. However, direct electrochemical determination of metronidazole at the conventional electrodes has the drawback of poor reproducibility and low sensitivity, attributed to the surface poisoning resulted from the adsorbed intermediates [11,12].…”