Sensitive voltammetric determination of paracetamol by poly (4-vinylpyridine)/multiwalled carbon nanotubes modified glassy carbon electrode

A carbon needle microelectrode decorated with TiO 2 nanosheets dominated by reactive facets as a highly electrocatalytic sensing element

“…4D) can be obtained for the plot of the oxidation peak current (i pa ) versus potential scan rate (v), following the regression equation: i pa (μA)¼ À 0.610v (mV s À 1 )À 43.55 (R 2 ¼0.993). This finding suggests that the electrode process is controlled by the adsorption rather than the diffusion of AP on the electrode surface, and the result agrees with the conclusions reported in the recent literature [55,56]. According to this result, the surface coverage of AP on the electrode surface is calculated to be 2.01 Â 10 À 6 mol cm À 2 by using Laviron's equation [57] (see SI for the detailed calculation process).…”

“…According to Laviron's model [57,60], the number of transferred electrons (n) and chargetransfer coefficient (α) can be deduced to be 2.54 and 0.50, respectively (see SI for the detailed calculation process). Therefore, we can conclude that a two-proton and two-electron process occurs for the AP electro-oxidation at TiO 2 -CNE, and the possible reaction mechanism is proposed according to other reports [50,52,55,61] and listed in Fig. 5.…”

Fabrication of electrochemical sensor for paracetamol based on multi-walled carbon nanotubes and chitosan–copper complex by self-assembly technique

“…However, these methods are generally time-consuming and require laborious sample pretreatment. Recently, electrochemical techniques have received tremendous attention on detection of paracetamol due to their merits of high selectivity, simple pretreatment procedure, less time-consuming and low cost [8][9][10][11][12][13][14][15][16].…”

Role of the anionic dopant of poly(3,4-ethylenedioxythiophene) for the electroanalytical performance: electrooxidation of acetaminophen

“…Different electrode materials based on conducting polymers [13][14][15][16][17][18][19][20][21] including PEDOT [16][17][18]20,21], metal and metal oxides [22][23][24][25][26][27], carbon-based materials (e.g. single-and multiwalled carbon nanotubes, graphene etc) [28][29][30][31][32][33][34][35][36], other chemicallymodified electrodes [37,38] have been already tested for electroanalytical determination of acetaminophen. In the last years these investigations started involving complex composites by combining various materials, e.g.…”

“…conducting polymers with carbon nanotubes or grapheme (e.g. [15,[19][20][21]) or multiwalled carbon nanotubes with other polymeric species [32,35,36]. However, it seems that the possibilities to achieve good electroanalytical performance with simple systems are not exhausted.…”