Adsorptive stripping voltammetric detection of thorium on the multi-walled carbon nanotube modified screen printed electrode

Soltani, Nasim; Haddadi, Hedayat; Asgari, Mehdi; Rajabzadeh, Nematollah

doi:10.1016/j.snb.2015.06.106

Cited by 20 publications

(7 citation statements)

References 30 publications

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“…The composition of the several inks used for the printing process determines the selectivity and sensitivity required for the analytical procedure [13] ; [14]. In order to improve the analytical characteristics/performance, modifications over SPE surfaces with a variety of nanomaterials such as carbonaceous materials (carbon nanotubes (CNTs), graphene (GR), carbon black (CB), etc) have been exploited and showed successful results [15]; [16] ; [17]. Due to its features that include large surface area, unique structure, and remarkable mechanical and electrical properties, the CNTs have been widely applied in electroanalytical chemistry [18] and recently it have been used to improve the analytical performance of microfluidic systems [19]; [20] ; [21].…”

mentioning

confidence: 99%

Electroanalytical thread-device for estriol determination using screen-printed carbon electrodes modified with carbon nanotubes

Ochiai

Agustini

Figueiredo-Filho

et al. 2017

Sensors and Actuators B: Chemical

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Microflow systems are powerful analytical tools that explore similar principles of typical flow injection analysis driven to in a microfluidic device. Generally, microfluidic devices can promote a low consumption of reagents and samples, high speed of analysis and possibility of portability. Several advances have been reached applying a simple and low cost device based on cotton thread as microfluidic channel where the transportation of solutions is based on capillary force helped by gravity. In the present work, we have demonstrated the versatility of thread-based electroanalytical devices (μTED) constructed using a cotton thread as the solution channel and screen-printed electrodes (SPE) surface modified with carbon nanotubes (CNT) as electrochemical detectors for the amperometric determination of estriol hormone in pharmaceutical samples. The parameters involved in the amperometric detection and microflow system were studied and optimized, using the best experimental conditions (flow rate of 0.50 μL s−1, 10 mm of analytical path, 2.0 μL of volume of injection and potential of detection of 0.75 V) a linear response was observed for concentration range (LDR) of 1.0 to 1000 μmol L−1 with limits of detection (LOD) and quantification (LOQ) of 0.53 μmolL−1 and 1.77 μmolL−1, respectively, and frequency of injection of 32 per hour. The proposed methodology was applied for determination of estriol in commercial samples and results were compared with those provided by spectrophotometric method (official methodology). The obtained results are in agreement at a 95% of confidence level.

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mentioning

confidence: 99%

Electroanalytical thread-device for estriol determination using screen-printed carbon electrodes modified with carbon nanotubes

Ochiai

Agustini

Figueiredo-Filho

et al. 2017

Sensors and Actuators B: Chemical

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“…[113] Detection of thorium ions were carried out by modified CNT based electrode-using adsorption stripping voltammetric approach. [114] Figure 12 showed a schematic of functionalized CNT modified working electrode employed for detection of metal ions.…”

Section: Recognition Of Metal Cationsmentioning

confidence: 99%

Carbon Nanotubes and its Potential Application in Sensing

Billing

2021

ChemistrySelect

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This study provides overview of the different type of nanomaterials depending upon their size, and type, however focusing more on the Carbon Nanotubes. This review highlights the different synthesis and purification techniques and also the functionalization methods of Carbon Nanotubes (CNTs). In particular, molecular recognition application of Carbon Nanotubes is explored in the present study. The majority of data was collected for optical and electrochemical studies of Carbon Nanotube based platform for the detection of metal ions, anions, nitroaromatics, biomolecules and gas molecules since last two decades. This review ends with an outlook of future perspectives that could be employed in nano sensor fabrication. I believe this review will act as a road map to guide the new researchers towards the concept of nanofabrication that can be employed to develop Carbon Nanotube based platform for sensing applications.

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“…Analytical techniques of inductively coupled plasma‐mass spectrometry, atomic absorption spectroscopy, atomic fluorescence spectroscopy and electrochemistry are commonly used for heavy metal detection . Stripping voltammetry, as one of the most sensitive electrochemical techniques for metal determination, has been reported extensively for detection of Pb, Cd, Hg, As, Zn, Cu, Ag, Cr, Ni, and Ti, etc . CNTs, as well as other carbon nanostructures, offer distinctive advantages of large surface area, fast electron transfer rate, high sensitivity and low cost hence have been widely researched for use in electrochemical metal ion sensing .…”

Section: Heavy Metal Detection With Cnts Using Stripping Voltammetrymentioning

confidence: 99%

Carbon Nanotubes Heavy Metal Detection with Stripping Voltammetry: A Review Paper

Wang

Yue

2017

Electroanalysis

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The challenge of heavy metal detection for environmental, industrial and medical purposes has led to the development of many analytical techniques. Stripping voltammetry is a very sensitive electrochemical method and has been widely used for heavy metal detection. Carbon nanotubes, a well-studied carbon material with physical and chemical properties suited for electrode material is commonly employed for sensitive and selective metal detection in electrochemistry. This article reviews the recent (2011-2016) applications of carbon nanotubes as an electrode or electrode surface modifier for heavy metals detection with stripping voltammetry.

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Adsorptive stripping voltammetric detection of thorium on the multi-walled carbon nanotube modified screen printed electrode

Cited by 20 publications

References 30 publications

Electroanalytical thread-device for estriol determination using screen-printed carbon electrodes modified with carbon nanotubes

Electroanalytical thread-device for estriol determination using screen-printed carbon electrodes modified with carbon nanotubes

Carbon Nanotubes and its Potential Application in Sensing

Carbon Nanotubes Heavy Metal Detection with Stripping Voltammetry: A Review Paper

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