Construction of cationic polyfluorinated azobenzene/reduced graphene oxide for simultaneous determination of dopamine, uric acid and ascorbic acid

A 3D reduced graphene oxide and flower-like ZnO crystal composite for electrochemical detection of reducing small biomolecules

“…A low R et value indicates a high conductivity. 13,19 To obtain electrode materials with excellent performance, the influence of the GCE modified by the 3DrGO-ZnO composite with various dosage ratios on the signal responses of AA, DA and UA was studied using the CV method. As shown in Fig.…”

“…For example, tryptophan-functionalized GR and the cationic polyfluorinated azobenzene-rGO nanocomposite acted as electrode modifiers, respectively, for the simultaneous detection of AA, DA and UA. 18,19 In the past few years, transition metal oxides have attracted much interest in developing electrode materials. [20][21][22] As an important transition metal oxide, a ZnO modified carbon paste electrode (CPE) and a glassy carbon electrode (GCE) have been used for the detection of bisphenol F 23 and tizanidine, 24 respectively.…”

“…For example, tryptophan-functionalized GR and the cationic polyfluorinated azobenzene–rGO nanocomposite acted as electrode modifiers, respectively, for the simultaneous detection of AA, DA and UA. 18,19…”

Recent Advances in Graphene-Based Nanocomposites for Ammonia Detection

“…The chemical and thermal reduction processes are the most favourable methods to synthesis graphene extensively. The elimination of oxygenated-functional groups of GO, such as hydroxyl, epoxy, carbonyl, and carboxyl groups, can be executed using reducing agents, such as hydrazine, ascorbic acid [ 38 , 39 , 40 ], oxalic acid, glucose [ 41 , 42 ], and pyrrole [ 43 , 44 , 45 , 46 , 47 , 48 ]. This method produces a more defected rGO in the presence of dangling oxygenated-functional groups on the interior and graphene structural molecules on the edge.…”

Selective non-enzymatic uric acid sensing in the presence of dopamine: electropolymerized poly-pyrrole modified with a reduced graphene oxide/PEDOT:PSS composite

“…[40][41][42] Previously, several important studies have addressed the development of the simultaneous detection of uric acid and dopamine using modified electrodes. [43][44][45][46][47] Nevertheless, to the best of our knowledge, there is still a real need for the development of a selective uric acid sensor in the presence of dopamine. A new development is demonstrated here based on an imprinted polymer on the ErGO/PEDOT:PSS modified electrode.…”