Enhanced Sensitive Electrochemical Sensor for Simultaneous Catechol and Hydroquinone Detection by Using Ultrasmall Ternary Pt‐based Nanomaterial

Abstract

The simple and effective method for the novel synthesis of Pt‐based nanoparticle was presented with high efficiency. The sensitive catalyst for the simultaneous detection of catechol and hydroquinone was prepared by depositing ternary metal complex on fluorine‐doped tin‐oxide (FTO). The composition and morphology of nanomaterials were characterized by TEM, HRTEM, XRD, XPS, and EDS (energy dispersive spectroscopy). The size of the Pt‐based nanomaterial was about 5±1 nm. The electrochemical performance of the modified catalyst was studied by CV, DPV, and EIS. The modified PtNiCu@FTO catalyst possessed good electro‐oxidation activity for hydroquinone and catechol and used for simultaneous detection of catechol and hydroquinone at scan rate of 20 mV s−1 (vs. Ag/AgCl). Detection responses were found in the ranges of 5–2900 μM for hydroquinone and 5–3000 μM for catechol. The detection limits (LOD) for HQ and CC were observed as 0.35 and 0.29 μM, respectively. The sensitivity of HQ and CC were 1515.55 and 1485 μA mM−1 cm−2, respectively. The prepared nanomaterial were effectively applied for the determination of CC and HQ in real samples.

A highly explicit electrochemical biosensor for catechol detection in real samples based on copper-polypyrrole

“…From the data in Table 2 it is evident that the synthesized material Cu-PPy is more efficient and specific for the detection of catechol compared to the competing work of Arsalan et al , 38 as mentioned in Table 2 .…”

Synergetic effects of a poly-tartrazine/CTAB modified carbon paste electrode sensor towards simultaneous and interference-free determination of benzenediol isomers

“…The method implemented in this study was more effective than other documented methods. 35,52,[56][57][58][59][60][61][62][63][64][65][66][67][68][69] 3.8. The effect of pH variation for the determination of CC at the poly-TZ/CTAB/MCPE…”

“…The detection limit for HQ at the poly-TZ/CTAB/MCPE was found to be 0.41 × 10 −6 M, which is better than the reported detection limits for other modified electrodes and electrochemical methods listed in Table 2. 35,52,[56][57][58][59][60][61][62][63][64][65][66][67][68][69] 3.11. The effect of solution pH variation on the oxidation of HQ at the poly-TZ/CTAB/MCPE The electrochemical oxidation of 0.1 mM HQ at the poly-TZ/ CTAB/MCPE was analyzed using cyclic voltammetry to investigate the effect of varying pH values.…”

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

“…In contrast, several studies have indicated that excessive concentrations of H 2 O 2 adversely affect the body’s normal physiological functions and can cause several diseases in a living organism, such as cardiovascular disease, Alzheimer’s, Parkinson’s, tumors, and cancer ( Arsalan et al, 2020 ; Wu et al, 2020 ). It is, therefore, vital for both industrial and academic purposes to be able to quickly, easily, and reliably carry out determination of H 2 O 2 ( Arsalan et al, 2021a ). The detection of H 2 O 2 has been accomplished by a number of analytical techniques, including titrometers, spectrophotometers, fluorescence, phosphorescence, chromatographies, and electrochemical techniques ( Li et al, 2016 ; Waqas et al, 2022 ).…”