Electrochemical determination of malachite green at graphene quantum dots–gold nanoparticles multilayers–modified glassy carbon electrode

Hou, Juying; Bei, Feng; Wang, Minglin; Ai, Shiyun

doi:10.1007/s10800-013-0554-1

Cited by 47 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The comparison of sensor analytical properties, including linear range and detection limit with properties of other electrochemical sensor, is shown in Table II. As seen, ours sensors show a better detection limit and a wide linear range compared with those reported in studies (Vishenkova et al , 2015; Hou et al , 2013; Ghodbane et al , 2016).…”

Section: Resultssupporting

confidence: 56%

“…In recent years, an increasing number of electrochemical methods have been developed for MG detection such as cyclic voltammetry (CV), differential pulse voltammetry and impedance spectroscopy. Several papers described the application of new analytical procedures for the detection and determination of both dyes and their leuco forms in various matrices, such as water, urine, fish tissue, animal feed (Vishenkova et al , 2015; Hou et al , 2013; Ghodbane et al , 2016). In this context, we propose to assay MG that is present in an aqueous medium by an electrochemical sensor characterized by cyclic voltammetry.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic study and characterization of a platinum electrode/sensitive membrane for malachite green detection

Ghodbane

Kherrrat

Zougar

et al. 2018

View full text Add to dashboard Cite

Purpose The purpose of this work is to explore electrical properties of an electrochemical sensor designed for the detection of malachite green (MG) present in an aqueous solution. Design/methodology/approach The present sensor consists in the spatial coupling of a polymeric membrane and an ion-sensitive electrode (platinum electrode). The preparation of the polymeric membrane involves the incorporation of an ionophore (D2HPA), a polymer (polyvinylchloride [PVC]) and a plasticizer (dioctyl phthalate [DOP]). Several techniques have been used to characterize this sensor: the cyclic voltammetry, the electrochemical impedance spectroscopy and the optical microscopy. The sensibility, the selectivity and the kinetic study of a modified platinum electrode have been evaluated by cyclic voltammetry. Findings The obtained results reveal the possibility of a linear relationship between the current of reduction peaks and MG concentration. A linear response was obtained in a wide-concentration range that stretches from 10−5 to 10−13 mol L−1, with a good correlation coefficient (0.976) and a good detection limit of 5.74 × 10−14 mol L−1 (a signal-to-noise ratio of 3). In addition, the voltammetric response of modified electrode can be enhanced by adding a layer of Nafion membrane. Under this optimal condition, a linear relationship was obtained, with a correlation coefficient of 0.986 and a detection limit of 1.92 × 10−18 mol L−1. Originality/value In the present research, a convenient, inexpensive and reproducible method for the detection of MG was developed. The developed sensor is capable of competing against the conventional techniques in terms of speed, stability and economy.

show abstract

Section: Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Kinetic study and characterization of a platinum electrode/sensitive membrane for malachite green detection

Ghodbane

Kherrrat

Zougar

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Hou et al [119] reported the electrochemical detection of malachite green (MG) with a GQD/AuNP-modified GCE. After a GQD solution was dropped onto the GCE surface, the resulting GQD/GCE was immersed in an HAuCl 4 solution and the AuNPs obtained were electrodeposited onto the GDQ/GCE following electrochemical reduction of chloroauric acid by application of a negative potential.…”

Section: 123mentioning

confidence: 99%

Graphene quantum dots in analytical science

Benítez–Martínez

Valcárcel

2015

TrAC Trends in Analytical Chemistry

202

View full text Add to dashboard Cite

“…Comparing the redox potential of the dyes, we found that compounds with relatively low redox potentials (e.g. indigo carmine (E° ∼0.68 V versus normal hydrogen electrode) ( Manjunatha, 2018 ), Coomassie brilliant blue (E° ∼0.60 V) ( Devi et al, 2018 ) and malachite green (E° ∼0.70 V) ( Hou et al, 2013 )) are direct substrate of pLac Gy . These dyes have similar redox potential to ABTS (E° = 0.69 V) ( Mateljak et al, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Novel Thermophilic Bacterial Laccase for the Degradation of Aromatic Organic Pollutants

Sharma

Leung

2021

Front. Chem.

View full text Add to dashboard Cite

We identified a putative laccase from the thermophilic bacterium Geobacillus yumthangensis. The putative laccase was produced recombinantly and its ability to catalyse the degradation of aromatic organic pollutants was investigated. The putative laccase exhibits broad pH and temperature stability, and, notably, it could catalyse the degradation of organic dyes as well as toxic pollutants including bisphenol A, guaiacol and phenol with a redox mediator. Our work further demonstrates the potential of using oxidative enzymes to break down toxic chemicals that possess major threats to human health and the environment.

show abstract

Electrochemical determination of malachite green at graphene quantum dots–gold nanoparticles multilayers–modified glassy carbon electrode

Cited by 47 publications

References 25 publications

Kinetic study and characterization of a platinum electrode/sensitive membrane for malachite green detection

Kinetic study and characterization of a platinum electrode/sensitive membrane for malachite green detection

Graphene quantum dots in analytical science

Novel Thermophilic Bacterial Laccase for the Degradation of Aromatic Organic Pollutants

Contact Info

Product

Resources

About