ZnO/functionalized MWCNT and Ag/functionalized MWCNT modified carbon paste electrodes for the determination of dopamine, paracetamol and folic acid

Progress in electrochemical detection of neurotransmitters using carbon nanotubes/nanocomposite based materials: A chronological review

“…Considering the linear relationship between the diminishing intensity of the ECL intensity with increasing DA concentration as a result of the quenching effect of DA on the QD, LOD of 0.6 nM was obtained. This can be considered an extremely low LOD compared to the value reported by Kumar et al [202] The figures of merit that project the progress made in the last decade of the determination of DA by various CNTbased electrodes is revealed at a glance on Table 1. The applicability of the electrodes earlier highlighted as well as the reliability of the determinations made by the electrodes can be evaluated by the validating media and the LODs.…”

“…[200,201] Kumar et al fabricated modified CPEs by mixing silicon, graphite powder, and the modifying composites. [202] The modifying composites were functionalized MWCNT and ZnO or Ag NPs. The resultant electrode was tagged ZnO/fMWCNT/MCPE and Ag/fMWCNT/MCPE.…”

Chemically modified carbon-based electrodes for the determination of paracetamol in drugs and biological samples

“…Due to synergistic effects on the electrochemical performance of devices, nanocomposites can be useful to improve the resolution and the selectivity, especially when multi-analyte detection of close species is desirable. Table 4 [ [19] , [25] , [75] , [76] , [77] , [78] , [79] , [80] , [81] , [82] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , [90] , [91] , [92] , [93] , [94] , [95] , [96] , [97] , [98] , [99] , [100] , [101] , [102] , [103] , [104] , [105] , [106] , [107] , [108] , [109] , [110] , [111] , [112] , [113] , [114] , [115] , [116] , [117] , [118] , [119] , [120] , [121] , [122] , [123] ] shows the analytical response characteristics of PCT sensors based on nanocomposite modified electrodes.…”

“…This sensor exhibited low LOD of 0.0177 μM for PCT, long-term stability, excellent reproducibility and good recoveries in drugs and biological samples. In another work, CPEs were also modified by ZnO NPs and COOH-MWCNT and used for the determination of PCT, folic acid and dopamine with a LOD of 0.23 μM for PCT [ 101 ]. The modification of CPE with MWCNT, NiO and ethynylferrocene nanocomposite was also successfully elaborated for the detection of PCT with a LOD of 0.5 μM and good recoveries in tablet and urines samples [ 102 ].…”

“…The selection of the most suitable electrochemical technique is an important factor for the achievement of high selectivity and detecting trace levels of PCT. CV [ 25 , 58 , 67 , 72 ], DPV [ 18 , 19 , 40 , 43 , [52] , [53] , [54] , [55] , [56] , [57] , [59] , [60] , [61] , [62] , [64] , [65] , [66] , [67] , [68] , 70 , 72 , 73 , [76] , [77] , [78] , [79] , [83] , [84] , [85] , 87 , 89 , 92 , 93 , 95 , 97 , 98 , 101 , 103 , 106 , 108 , [110] , [111] , [112] , [113] , [114] , [115] , 119 , [121] , [122] , [123] , [125] , [126] , [127] , [128] , [129] , [130] , [131] , [132] , 134 ] and SWV [ 17 , 34 , 36 , 38 , 41 , 75 ...…”