Simultaneous detection of ascorbic acid, dopamine and uric acid based on vertical N-doped carbon nanosheets/three-dimensional porous carbon

Defective Prussian Blue Analogue with Cobalt for Fabrication of An Electrochemical Sensor for Detecting Ascorbic Acid, Dopamine and Uric Acid

“…[27][28][29] Therefore, the accurately simultaneous detection of AA, DA and UA in biological fluids is helpful for clinical diagnosis. Among the sensing materials, carbon materials with low toxicity and excellent conductivity were commonly used as modifier to improve the electrochemical performance of the sensor, including carbon nanotubes, [30] functionalized porous carbon, [31,32] graphenes such as reduced graphene oxide [33] and N-doped graphenes, [34,35] which are beneficial to the simultaneous determination of AA, DA and UA. To enrich the active sites and the catalytic activity, the noble metal nanoparticles [36,37] and some transition metals were incorporated in the modified layer, such as FeÀ Mn compound, [38] CoFe alloy, [39] especially cobalt, which was commonly act as the catalytic center to facilitate electrochemical redox of AA, DA and UA for the improvement of sensitivity.…”

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

“…The limits of detection (S/N = 3) of AA, DA and UA were estimated to be 39, 0.67 and 0.34 μmol L −1 , respectively, indicating high sensitivity for the detection of them. The analytical performance of the 3DrGO–ZnO/GCE was compared with that of other modified electrodes (Table S1, ESI† 14,16,42–50 ). As seen, the prepared 3DrGO–ZnO/GCE is superior to or comparable to most of other modified electrodes in terms of linear range and LOD.…”

“…13 In recent years, modified electrodes for determining biomolecules have attracted extensive attention. Various nanomaterials including carbon-based nanomaterials, 14 metal-based nanomaterials 15 and nanocomposites 16 have been used to prepare modified electrodes that can simultaneously measure AA, DA and UA. Among carbon-based nanomaterials, graphene (GR) and reduced graphene oxide (rGO) have been considered as the most promising electrochemical sensing materials because of their good conductivity, large specific surface area, and low cost.…”

Holey MoS2-based electrochemical sensors for simultaneous dopamine and uric acid detection

“…The obtained linear ranges were wider than previously published 2D material-based electrochemical sensors. 50–54 The mean sensitivity of the sensor was calculated to be 0.0232 ± 0.004 and 0.067 ± 0.002 μA μM −1 cm −2 ( n = 4, RSD% 3.5) for the simultaneous detection of DA and UA, respectively. The detection limit (LOD) was calculated using the standard International Union of Pure and Applied Chemistry method: LOD: 3 s / S ( s : standard deviation of the blank measurements and S : slope of the curve).…”