Metal oxide-carbon nanocomposite-modified electrochemical sensors for toxic chemicals

Veerakumar, Pitchaimani; Sangili, Arumugam; Manavalan, Shaktivel; Lin, King‐Chuen

doi:10.1016/b978-0-12-820727-7.00010-0

Cited by 4 publications

(4 citation statements)

References 125 publications

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“…b. Recent Research Trends: Owing to the aforementioned properties, the use of AuNPs for the development of novel sensing techniques holds significant promises when it comes to research related to: drug determination [42][43][44]; anticancer and other biomedical applications [45,46]; immuno-PCR (Polymerase Chain Reaction) assay and ELISA (Enzyme-Linked Immunosorbent Assay) [47,48], and so on.…”

Section: Gold Nanoparticlesmentioning

confidence: 99%

Frontiers in Voltammetry

2023

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Section: Gold Nanoparticlesmentioning

confidence: 99%

Frontiers in Voltammetry

2023

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“…26 Although these DHB isomers have identical structures, characteristics, and coexistence in nature, they differ in their redox properties, which frequently coexist and interfere during simultaneous analysis. 27,28 Several analytical techniques are inaugurated to separate the analytical signals of DHBs, including highperformance liquid chromatography, 29 electrochemilumines-cence, 30 gas chromatography/mass spectrometry, 31 UV−vis spectroscopy, 32 flow-injection, 33 fluorometric, 34 and EC methods. 35,36 Among them, EC methods have grown significant attention from the analytical area owing to their low cost, ease of operation, and rapid response.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, US Environmental Protection Agency (EPA) and European Union (EU) have evaluated the DHB isomers to be highly toxic, causing possibly carcinogenic effects, particularly to humans . Although these DHB isomers have identical structures, characteristics, and coexistence in nature, they differ in their redox properties, which frequently coexist and interfere during simultaneous analysis. , Several analytical techniques are inaugurated to separate the analytical signals of DHBs, including high-performance liquid chromatography, electrochemiluminescence, gas chromatography/mass spectrometry, UV–vis spectroscopy, flow-injection, fluorometric, and EC methods. , Among them, EC methods have grown significant attention from the analytical area owing to their low cost, ease of operation, and rapid response. Screen-printed carbon electrodes (SPCEs) are primarily utilized as electrode materials because they are inexpensive, have a wide potential window, and are chemically inert .…”

Section: Introductionmentioning

confidence: 99%

Octahedral Pt–Ni Alloy Nanoparticles Decorated on 3D Interconnected Porous Carbon Nanosheets for Voltammetric Determination of Dihydroxybenzene Isomers

Veerakumar,

Sangili,

Chen

et al. 2023

ACS Appl. Nano Mater.

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Ultrathin three-dimensional (3D) interconnected porous carbon nanosheets (PCNs) derived from Moringa oleifera barks (commonly known as the drumstick tree) with electrochemical (EC) sensor performance was employed as the carbon precursor. In this study, we described a simple one-step pyrolysis technique to generate hierarchical PCN using a high-temperature pyrolysis and KOH activation procedure. Using the microwave-solvothermal approach, platinum–nickel bimetallic octahedral nanoparticles were decorated on ultrathin 3D PCN (referred to as Pt–Ni@PCN). The morphological, structural, and EC properties of the Pt–Ni@PCN nanocomposite were well characterized. Using cyclic voltammetry and linear sweep voltammetry, the dihydroxybenzene (DHB) isomers hydroquinone, catechol, and resorcinol were identified individually as well as simultaneously. The screen-printed carbon electrode-modified nanocomposite [Pt–Ni@PCN/screen-printed carbon electrode (SPCE)] served as an outstanding electron (e–)-transfer mediator for DHB isomer oxidation, yielding limits of detection of 0.0093, 0.0263, and 0.0529 μM, respectively. Also, the Pt–Ni@PCN/SPCE sensor has exceptional selectivity, long-term durability, reproducibility, repeatability, and anti-interference. Furthermore, the proposed sensor can be exploited to detect simultaneously environmental pollutants in river, lake, and tap water samples with good recovery rates.

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“…In recent decades, porous carbons (PCs) have gained popularity as a catalyst support, an EC sensor, and other energy-related applications. − They have large specific surface areas (SSA), a lot of surface functions, well-controlled pore systems (pore size and connectivity), durable mechanical properties, great electrical conductance, and outstanding electrocatalytic activity. Specifically, CNTs, graphene, GO, rGO, porous carbons (PCs), and activated carbons have all been manufactured using a wide range of both physical/chemical processes .…”

Section: Introductionmentioning

confidence: 99%

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

Veerakumar

Hung

et al. 2022

J. Agric. Food Chem.

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In this review, ruthenium nanoparticles (Ru NPs)-based functional nanomaterials have attractive electrocatalytic characteristics and they offer considerable potential in a number of fields. Ru-based binary or multimetallic NPs are widely utilized for electrode modification because of their unique electrocatalytic properties, enhanced surface-area-to-volume ratio, and synergistic effect between two metals provides as an effective improved electrode sensor. This perspective review suggests the current research and development of Ru-based nanomaterials as a platform for electrochemical (EC) sensing of harmful substances, biomolecules, insecticides, pharmaceuticals, and environmental pollutants. The advantages and limitations of mono-, bi-, and multimetallic Rubased nanocomposites for EC sensors are discussed. Besides, the relevant EC properties and analyte sensing approaches are also presented. On the basis of these insights, we highlighted recent results for synthesizing techniques and EC environmental pollutant sensors from the perspectives of diverse supports, including graphene, carbon nanotubes, silica, semiconductors, metal sulfides, and polymers. Finally, this work overviews the modern improvements in the utilization of Ru-based nanocomposites on the basis for electroanalytical sensors as well as suggestions for the field's future development.

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Metal oxide-carbon nanocomposite-modified electrochemical sensors for toxic chemicals

Cited by 4 publications

References 125 publications

Frontiers in Voltammetry

Frontiers in Voltammetry

Octahedral Pt–Ni Alloy Nanoparticles Decorated on 3D Interconnected Porous Carbon Nanosheets for Voltammetric Determination of Dihydroxybenzene Isomers

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

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