A glassy carbon electrode modified with carbon nano-fragments and bismuth oxide for electrochemical analysis of trace catechol in the presence of high concentrations of hydroquinone

Liu, Lingyu; Ma, Zhen; Zhu, Xiaohua; Alshahrani, Lina Abdullah; Tie, Shaolong; Nan, Jun

doi:10.1007/s00604-016-1973-6

Cited by 28 publications

(4 citation statements)

References 39 publications

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“…The enhanced catalytic activity of the modified electrode toward CT was attributed to the good conductivity of Au and analyte‐adsorbing ability of TiO 2 . Different modifier materials, including a nanocomposite of carbon nanofragments and bismuth oxide (CNF−Bi) [92] and a palladium nanoparticle–chitosan–indium tin oxide modified electrode (ITO/CHIT@Pd nano ) [93] were reported in the literature for the selective detection of CT. Due to its specificity as a biological substrate and its strong oxidation ability, laccase, a polyphenol oxidase, has been used in different research areas, including biosensors and fuel cells. Three redox sites hold four Cu atoms per monomer of laccase, one in each T1 and T2 site and two in T3 sites.…”

Section: Individual Detection Of Ctmentioning

confidence: 99%

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Nayem

Shah

Sultana

et al. 2021

The Chemical Record

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The high surface‐to‐volume ratio and desirable chemical, thermal, and catalytic properties of nanomaterials have made them promising electrode materials for sensing applications. As such, different nanomaterials and their nanocomposite‐based individual and/or simultaneous detection of dihydroxybenzene (DHB) have been reported in recent years. Due to the low degradation rate and high toxicity of DHB isomers, the development of innovative and robust sensors for their simultaneous detection has received considerable attention. In this review, applications of different nanomaterials (with the exception of carbon nanotubes, graphene, and their derivatives) for individual and/or simultaneous detection of DHB are briefly discussed. The focal point is on the characteristic features of the modified electrodes that improve their electrocatalytic activities toward DHB. Real sample analysis and electrolyte media are also summarized. This review includes studies published from 2011 to 2020.

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Section: Individual Detection Of Ctmentioning

confidence: 99%

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Nayem

Shah

Sultana

et al. 2021

The Chemical Record

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“…glassy carbon electrode [10][11][12], pencil-lead [13], iridium microwire [14], gold micropillar electrode array [15], etc. In addition, BFEs can be modified with different materials, such as graphene oxide [16], chitosan [17], and carbon nano-fragments [18]. Usually, a silver/silver chloride (Ag/AgCl) reference electrode with aqueous inner electrolyte and a platinum (Pt) wire counter electrode are needed to successfully perform the ASV measurement.…”

Section: Introductionmentioning

confidence: 99%

Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater

et al. 2017

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The authors describe a liquid crystal polymer (LCP) based bismuth (Bi) film electrode that can be directly deployed for in-situ determination of zinc(II) ions. The use of an LCP warrants improved operational reliability, high durability and flexibility of the sensor, allowing it to be mounted on any flat or shaped surface. Square wave anodic stripping voltammetry shows the sensor to be able to detect Zn(II) (-1.64 V vs. thin-film Ag/AgCl reference electrode) in concentrations as low as 1.22 nM at a deposition time of 180 s. Other figures of merit include (a) an analytical sensitivity of 1.55 nA•nM-1 •mm-2 , (b) a linear detection range extending from 4.59 to 1071 nM, (c) a repeatability with a relative standard deviation of 3.35% (for n = 10), (d) a reproducibility with a relative standard deviation of 1.64% (for n = 6). Real-time applicability of the sensor for in-situ detection was demonstrated by determination of Zn(II) in seawater. In an extension of the method, a flexible sensor array consisting of four LCP-based sensors was attached to the hull of an autonomous kayak, which was remotely operated. The response of the sensor array indicated a clear trace of Zn(II) concentrations in seawater. This was confirmed by ICP-MS analysis. The results suggest the potential usage of the flexible LCP electrochemical sensor for in-situ monitoring.

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“…Catechol (1,2-dihydroxybenzene, CC) is a kind of significant raw material in commercial production, which is widely applied in the field of synthetic drugs, photographic contrast agent, cosmetics, antioxidant, dye colorant and so forth. 1,2 However, in the course of industrial production, unemployed CC released into environment with the industrial effluent can not only cause a series of problems to animals, 3 plants 4,5 and aquatic organisms, 6,7 but also extremely destroy human organism in central nervous system and respiratory system. 8,9 Moreover, CC is regarded as environmental pollutant by the US Environmental Protection Agency (EPA) and the European Union (EU) due to its low degradability and long-term existence in the ecosystem, [10][11][12] and the environmental quality standard for surface water was rigorously limited to 0.005 mg l −1 in the national standard of China (GB 3838-2002).…”

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confidence: 99%

Direct Coupling of Phthalocyanine Cobalt(II) and Graphene via Self-Driven Layer-by-Layer Assembly for Efficient Electrochemical Detection of Catechol

Chen

Guo

et al. 2020

J. Electrochem. Soc.

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Electrochemical detection of catechol (CC) based on the integrated nanocomposite electrodes with high sensitivity and excellent selectivity is highly desirable for environment monitoring and assessment. In this work, the methylated tetra-β-(N,Ndiethylaminoethoxy)phthalocyanine cobalt(II)/electrochemically reduced graphene oxide ((MtPcCo/ErGO) n ) multilayer films were successfully constructed via a directly coupled layer-by-layer assembly strategy based on the electrostatic attraction as well as π-π stacking interaction, and consequent in situ electroreduction. The formation of the robust multilayer films only relies on the alternately self-driven combination of the [MtPcCo] 4+ and GO but without addition of any polymer or surfactant adhesives. The directly coupled multilayer films can play such roles of coordination as promoting sensitive response signal, regulable layer architecture, oriented transmission of electrons, and electrical conductivity. As a result, the tailored (MtPcCo/ErGO) 10 film can work as an efficient electrocatalyst for CC oxidation and sensitive detection. The oxidation current density (j) of CC is widely linear to its concentration from 5 to 150 μm and 150 to 350 μm, respectively, with a low detection limit of 0.53 μm (S/N = 3). Furthermore, the good selectivity, reproducibility and long-term storage stability make the multilayer film suitable for the practical CC determination.

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A glassy carbon electrode modified with carbon nano-fragments and bismuth oxide for electrochemical analysis of trace catechol in the presence of high concentrations of hydroquinone

Cited by 28 publications

References 39 publications

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater

Direct Coupling of Phthalocyanine Cobalt(II) and Graphene via Self-Driven Layer-by-Layer Assembly for Efficient Electrochemical Detection of Catechol

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