Determination of 2,4-diaminotoluene by a bionanocomposite modified glassy carbon electrode

Aromatic amine electrochemical sensors based on a Co-MOF: a hydrogen bond-induced specific response

“…Cyclic voltammetry (CV) methods were used for the quantitative detection of 2,4-diaminotoluene with a low detection limit of 35 nM. 13 The Akash Deep research group constructed an electrochemical sensor based on composite materials including Cu-MOFs, graphene and polyaniline. This composite material shows high porosity and excellent electrical conductivity.…”

A Screen-Printed Electrode Modified with Gold Nanoparticles/Cellulose Nanocrystals for Electrochemical Detection of 4,4´-Methylene Diphenyl Diamine

“…All the chemicals used in the present study were the same as in our previous investigations on the quantification of PAAs using conventional 'macro' electrodes, as well as the apparatuses used (i.e., the potentiostat and pH-meter) [13,15,17].…”

“…Finally, in spite of their simplicity and ease of use, SPEs afford high reproducibility and sensitivity, and they do not require pre-treatment, such as electrode polishing, as other electrode materials do [12]. As for all electrochemical sensors, in SPEs the applied voltage initiates a redox reaction on the working electrode, resulting in a measurable current proportional to the concentration of the target analyte [13]. However, a bare SPE has low conductivity and low surface area, which can negatively affect the performance of the electrode.…”

“…Ghaani et al fabricated two nanosensors to quantify 2,4-diaminotoluene (TDA) and 4,4 ′ -methylene diphenyl diamine (MDA). In these works, a glassy carbon electrode modified by different bionanocomposites of gold nanoparticles, multiwalled carbon nanotubes, and chitosan has been used as the transducer [13,15]. In another study, multiwalled carbon nanotubes and carbon mesoporous nanocomposite were used to modify a glassy carbon electrode to quantify 2,6-TDA migrating from multilayer packaging materials into food products [17].…”

Electroreduction of Bi(III) Ions in the Aspect of Expanding the ”Cap – Pair” Effect

“…A very important stage of electrochemical research is the choice of a suitable working electrode. Carbon electrodes are commonly used, the most popular are glass carbon electrodes (GCE) [7,8], carbon paste electrode (CPE) [9], boron-doped diamond electrode (BDDE) [10] or carbon printed electrodes (SPE) [11,12]. These are solid electrodes, which due to processes taking place on their surface, both during their preparation and use and a lack of reproducibility of the surface during mechanical cleaning are, however, characterised by worse reproducibility than mercury electrodes, with a constant change of parameters (range of useful potentials, residual current) and low stability.…”