Electrocatalytic Reduction of Free Chlorine at an N,N-Diethvlaniline-grafted Carbon Electrode for Improved Sensitivity in Amperometric Detection

Morita, K.; Hirayama, Naoki

doi:10.2116/analsci.33.5

Cited by 5 publications

(2 citation statements)

References 16 publications

(16 reference statements)

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“…Several techniques have been developed for free chlorine determination in water, such as electrochemical methods , spectrophotometry, and others . Of these techniques, electrochemical methods offer attractive features, such as simple procedures and ease of handling.…”

Section: Figurementioning

confidence: 99%

Electrochemical Detection of Free Chlorine Using Ni Metal Nanoparticles Combined with Multilayered Graphene Nanoshells

et al. 2019

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An electrochemical detection of free chlorine using carbon‐metal (C−M) composite powder, with a nickel‐metal nanoparticle combined with a multilayered graphene nanoshell (Ni metal@multilayered graphene) as the main component, synthesized from CH4 via multimode microwave‐assisted catalytic decomposition, was studied. Morphological analysis of the C−M composite powder was performed by TEM–EDX and Raman spectroscopy. The C−M composite powder was packed in a porous microelectrode (PME), and its electrochemical activity with respect to free chlorine was evaluated using a potential sweep method. The C−M composite powder exhibited a sufficient activity against free chlorine. A current based on the reduction of free chlorine was observed in the potential < around+0.3 V vs. Ag/AgCl. A linear relationship was observed between the current and the concentration.

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Section: Figurementioning

confidence: 99%

Electrochemical Detection of Free Chlorine Using Ni Metal Nanoparticles Combined with Multilayered Graphene Nanoshells

et al. 2019

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“…[21][22][23][24] In consideration of the above, there is a need to develop fast, simple, and accurate procedures for the analysis of these compounds both in pharmaceutical preparations and human body fluids. Among the various techniques used to this end, electrochemical methods have proven to offer remarkable advantages, [25][26][27][28] in terms of sensitivity, simplicity, relatively fast analysis and low costs. However, the limitation with using most solid electrodes for the simultaneous analysis of a combination of these four drugs is the serious overlapping of their oxidation potentials.…”

Section: Introductionmentioning

confidence: 99%

Selective Determination of Levodopa in the Presence of Vitamin B6. Theophylline and Guaifenesin Using a Glassy Carbon Electrode Modified with a Composite of Hematoxylin and Graphene/ZnO

2018

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An electrode has been developed based on using a composite of hematoxylin/graphene/ZnO nanocomposite to modify a glassy carbon electrode (GCE). The electrode (HGGCE) was tested and found to be applicable for the voltammetric analysis of levodopa in the presence of vitamin B, theophylline and guaifenesin using a 0.1 M phosphate buffer solution (PBS) pH 7 as the solvent. The HGGCE was used as the working electrode in cyclic voltammetry (CV) and square wave voltammetry (SWV) studies on the electrochemical behavior of levodopa at its surface. The results showed a dramatic enhancement in the oxidation current of levodopa and a shift in its oxidation potential towards more negative potentials as opposed to identical tests using bare GCE as the working electrode. The studies showed that the increase in the oxidation current has two linear profiles in two concentration ranges of 0.05 - 90.0 and 90.0 - 1000.0 μM. The detection limit of SWV analysis using the modified electrode was determined to be 0.03 μM (S/N = 3). Further advantages of the methods based on HGGCE include the simple modification procedure of the electrode, as well as its excellent sensitivity and reproducibility. The modified electrode was eventually found to be applicable to the determination of mixtures of levodopa, vitamin B, theophylline and guaifenesin in real samples.

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Electrochemical Detection of Free Chlorine in Ballast Water Management System

Park,

Jang,

Lee

et al. 2024

Advanced Sensor Research

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Ballast water, which is seawater taken onboard ships to ensure stable and maneuverable sailing, can pose a significant threat to marine ecosystems and human health when discharged owing to the presence of undesirable organisms. To mitigate this risk, ballast water treatment methods such as electrochlorination are employed, where oxidants such as hypochlorite are generated to effectively eliminate marine microorganisms. The effectiveness of an electrochlorination‐based ballast water management system (BWMS) depends on the maintenance of optimal concentrations of total residual chlorine (TRC). However, excessive levels of free chlorine (Cl) can result in corrosion and environmental damage, rendering the accurate monitoring of TRC levels crucial for the safe discharge of ballast water. This review focuses on recent advancements in electrochemical sensors for free Cl measurement in BWMS. The process of free Cl generation, techniques for electrochemical detection, and factors influencing sensor performance are elucidated. In addition, materials and strategies for improving the performance of the sensors are described. Finally, perspectives on the current issues and future challenges that must be overcome to effectively utilize electrochemical detection in BWMS are discussed, thereby offering new directions for advancing this technology.

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Electrocatalytic Reduction of Free Chlorine at an N,N-Diethvlaniline-grafted Carbon Electrode for Improved Sensitivity in Amperometric Detection

Cited by 5 publications

References 16 publications

Electrochemical Detection of Free Chlorine Using Ni Metal Nanoparticles Combined with Multilayered Graphene Nanoshells

Electrochemical Detection of Free Chlorine Using Ni Metal Nanoparticles Combined with Multilayered Graphene Nanoshells

Selective Determination of Levodopa in the Presence of Vitamin B6. Theophylline and Guaifenesin Using a Glassy Carbon Electrode Modified with a Composite of Hematoxylin and Graphene/ZnO

Electrochemical Detection of Free Chlorine in Ballast Water Management System

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