A Cu-functionalized MOF and multi-walled carbon nanotube composite modified electrode for the simultaneous determination of hydroquinone and catechol

Abstract

Designing MOF-based materials with desired electrochemical activity and high electron conductivity may yield a novel electrochemical sensor that effectively detects various organic pollutants and conduct health monitoring. This paper developed...

A Facile One-Pot Synthetic Approach Towards CB@PCN-222(Fe) Composites for Simultaneous Electrochemical Detection of Dihydroxybenzene Isomers

“…Generally, the solution acidity is one of the crucial factors in the electrochemical detection of DHBIs since the proton participates in the electrode reactions. 32 Therefore, the electrochemical behavior of DHBIs mixture (each of 200 μM) at CB@PCN-222(Fe)−2 modified GCE was investigated using the differential pulse voltammetry (DPV) technique to explore the effect of pH on the electrochemical process. The oxidation potentials of three isomers progressively moved negatively at the pH range of 5.0 to 8.0 (Figs.…”

“…4c, the redox potentials moved in positive and negative directions respectively, through which the electron transfer of HQ and CC could be inferred as quasi-reversible pathways. 32 The relationship between E p and the natural logarithm of scan rate (lnv) was fitted as:…”

“…We found this material was relatively water-sensitive during the research, so the storage requirements were harsh. 32 Inspired by this, we adopted a facile one-step solvothermal method to integrate CB and PCN-222(Fe) for the first time. The obtained composites are namely CB@PCN-222(Fe)-x.…”

P3MOT-decorated metal-porphyrin-based zirconium-MOF for the efficient electrochemical detection of 4-nitrobenzaldehyde

“…The corresponding regression equations were tted as follows: S1: I pc = 0.683v 1 2 − 0.719 (R 2 = 0.999) and I pa = −1.046v 1 2 + 1.428 (R 2 = 0.999) S2: I pc = 0.578v 1 2 + 6.011 (R 2 = 0.996), indicating that the reaction of 4-NBA at the P3MOT@PCN-222(Fe)/GCE is a diffusion-controlled process. 42 Fig. 5c shows that the redox currents underwent respective movements in positive and negative directions, offering insights into the quasi-reversible pathways of electron transfer for S1.…”

MOF-derived Cu/N–C Composite Based Electrochemical Sensor for Simultaneous Detection of Catechol and Hydroquinone

“…13 To address this issue, a high-temperature pyrolysis process is employed to convert MOFs into composite materials characterized by remarkable electrocatalytic performance, such as transition metal oxides, transition metal carbides and porous carbon materials loaded with metal nanoparticles. [14][15][16][17][18] And for metal nanoparticles (MNPs) loaded carbon materials prepared by derivatization of MOFs, this strategy can not only improve the conductivity of MOFs, but also effectively reduce the aggregation of MNPs on carbon materials, so that the composite materials can expose more catalytic activity. site, expanding the scope of application of MOFs.…”