Development of a Novel Cu(II) Complex Modified Electrode and a Portable Electrochemical Analyzer for the Determination of Dissolved Oxygen (DO) in Water

Leonardi, Salvatore Gianluca; Bonyani, Maryam; Ghosh, Kaushik; Dhara, Ashish Kumar; Lombardo, Luca; Donato, Nicola; Neri, G.

doi:10.3390/chemosensors4020007

Cited by 12 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the others, the copper complexes were also used as the mediators in electroanalysis, which were associated with improved sensitivity, selectivity and shorter response time [ 14 , 15 , 16 ]. Because of its application in a broad field such as pharmaceutical, textile and food manufacturing industries [ 17 ], medical diagnosis [ 18 ], water treatment [ 19 ], the determination of hydrogen peroxide (further only H 2 O 2 ) is important.…”

Section: Introductionmentioning

confidence: 99%

Bis(2,2′-bipyridil)Copper(II) Chloride Complex: Tyrosinase Biomimetic Catalyst or Redox Mediator?

et al. 2020

View full text Add to dashboard Cite

In this article, construction of amperometric sensor(s) based on screen-printed carbon electrodes covered by thin layers of two types of carbon nanomaterials serving as amplifiers, and containing [Cu(bipy)2Cl]Cl∙5H2O complex is reported. Their performance and biomimetic activity towards two selected neurotransmitters (dopamine and serotonin) was studied mainly using flow injection analysis (FIA). The important parameters of FIA such as working potential, flow rate, and pH were optimized. The mechanism of the catalytic activity is explained and experimentally confirmed. It reveals that presence of hydrogen peroxide plays a crucial role which leads to answer the title question: can presented complex really be considered as a tyrosinase biomimetic catalyst or only as a redox mediator?

show abstract

Section: Introductionmentioning

confidence: 99%

Bis(2,2′-bipyridil)Copper(II) Chloride Complex: Tyrosinase Biomimetic Catalyst or Redox Mediator?

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Due to the fact that it already contains metals, this type of modiication substance is normally used for the determination of organic and inorganic compounds especially via electrocatalysis [27]. Cobalt phthalocyanin has been widely and continuously investigated and applied for the analysis of ascorbic, diethyl stilbestol, and acetaminophen [28].…”

Section: Metal Complexesmentioning

confidence: 99%

Modified Electrodes for Determining Trace Metal Ions

Chooto¹

2017

Applications of the Voltammetry

View full text Add to dashboard Cite

Due to all the advantages of low cost, speed, and simplicity, electrochemistry has always represented a perfect choice to be selected in quantitative analysis particularly in the case of metal ions but with the drawback of speciicity and sensitivity. With the arrival of nanomaterials, the problem of sensitivity and limit of detection has been overcome and a great variety of applications of electrochemistry especially in trace analysis are highlighted.Layers of materials can be arranged and manipulated to make the methods more speciic to targeting analytes The opportunity is there for both older and newer methods to be beneicial in a large number of applications with superb analytical performance. This knowledge of modiied electrodes can inspire newer and greater innovative applications of electrochemistry with the promising extension to other areas under current interests.

show abstract

“…On the other hand, the chemical modification of electrodes has become a rapidly growing area of research because of its importance in various domains, such as electro-and photo-catalysis, electro-synthesis, electro-analysis and molecular devices [11][12][13][14][15]. Chronologically, the concept of the modified electrode (ME) has attracted the attention of many researchers as soon as the first prototypes were produced by chemical modification of the metal surfaces.…”

Section: Introductionmentioning

confidence: 99%

Elaboration of new modified electrodes (MEs) by electropolymerization of Cu(II)-Schiff base complexes bearing pyrrole moieties: Application in electroreduction of acetophenone and carbon dioxide

Amer

Ilikti

Beyens

et al. 2019

European Polymer Journal

View full text Add to dashboard Cite

Novel functional Schiff base ligands bearing pyrrole moieties in their structures, L1:1-(3-Pyrrole-1-yl-propylimino-methyl)-naphtalen-2-ol, L2:1-(3-Pyrrole-1-yl-propylimino-methyl)phenol and L3: 1-(3-Pyrrole-1-yl-phenylimino-methyl)-naphtalen-2-ol as well as their Cu(II) complexes, have been synthesized and characterized by means of common spectroscopic analysis methods such as FTIR, UV-Vis, 1 H NMR, 13 C NMR, GC-MS and thermogravimetric analysis (TGA). The complexes, along with their metallic centres, were electropolymerized by the cyclic voltammetry method on platinum (Pt) and indium tin oxide (ITO) substrates, so that new and original modified electrodes (MEs) could be obtained, i.e. ME Poly(L i-Cu)Pt and ME Poly (L i-Cu)ITO (i=1-3). MEs obtained on ITO were characterized by FTIR spectroscopy and their morphology was investigated using scanning electron microscopy (SEM) and elemental composition by EDX analysis. The catalytic activity of these modified electrodes was successfully evaluated using electroreduction reactions in aqueous media of organic substrates. The efficiently of acetophenone reduction was significantly improved by increasing the quantity of added substrate. The value of cathodic current intensity ipc goes up from 7 to 42μA for substrate volume values varying from 0 to 40 μL, respectively. In addition, a significant increase of current values from-70μA to 175μA was observed in the presence of a saturated solution of CO 2 .

show abstract

Development of a Novel Cu(II) Complex Modified Electrode and a Portable Electrochemical Analyzer for the Determination of Dissolved Oxygen (DO) in Water

Cited by 12 publications

References 19 publications

Bis(2,2′-bipyridil)Copper(II) Chloride Complex: Tyrosinase Biomimetic Catalyst or Redox Mediator?

Bis(2,2′-bipyridil)Copper(II) Chloride Complex: Tyrosinase Biomimetic Catalyst or Redox Mediator?

Modified Electrodes for Determining Trace Metal Ions

Elaboration of new modified electrodes (MEs) by electropolymerization of Cu(II)-Schiff base complexes bearing pyrrole moieties: Application in electroreduction of acetophenone and carbon dioxide

Contact Info

Product

Resources

About