Fabrication of a nanostructured TiO<sub>2</sub>/carbon nanotube composite electrode for voltammetric and impedimetric determination of NTO explosive in the water and soil samples

Damiri, Sajjad; Pouretedal, Hamid Reza; Heidari, Amin

doi:10.1080/03067319.2016.1232722

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…The detection limit of AuNPs/MWCNTs/PGE is lower than 0.2 μM of the sensor based on multi walled carbon nanotube paste electrode modified with TiO 2 and [21] and

{1\times {10}^{-5}}

M of CdO nanoparticles modified carbon paste electrode [40].…”

Section: Resultsmentioning

confidence: 99%

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Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Aslan,

Şen,

Tecİman

et al. 2023

Propellants Explo Pyrotec

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For the electrochemical detection of nitrotriazolone (NTO), multiwalled carbon nanotubes (MWCNT) and gold nanoparticles have been combined to generate nanocomposites. Electrochemical analysis and surface characterisation using scanning electron microscopy (SEM) and energy dispersive X‐ray (EDX) spectroscopy techniques were used to confirm the presence of gold nanoparticles on MWCNT. The electrochemical behavior of NTO at the modified pencil graphite electrode in the pH range of 2.0–10.0 (0.04 M Britton‐Robinson buffer solution) was evaluated using cyclic (CV) and differential pulse voltammetry (DPV).The suggested electrochemical sensor displayed a quick reaction to NTO with an optimal set of experimental parameters, a linear calibration curve spanning 30 to 1500 nM, and a detection limit of 22.6 nM. Using the differential pulse voltammetry technique, the usefulness of the MWCNT/AuNPs, and PGE for the determination of NTO in groundwater was evaluated.

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“…The detection limit of AuNPs/MWCNTs/PGE is lower than 0.2 μM of the sensor based on multi walled carbon nanotube paste electrode modified with TiO 2 and [21] and

{1\times {10}^{-5}}

M of CdO nanoparticles modified carbon paste electrode [40].…”

Section: Resultsmentioning

confidence: 99%

“…Along with Picric acid and TNT, NTO is a prominent insensitive high energetic (IHE) explosive [19][20][21]. It has around 10 times as much mutagenesis potential as those two substances.Additionally, IHE-polluted effluent from weapons processing facilities must be treated before discharging.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Aslan,

Şen,

Tecİman

et al. 2023

Propellants Explo Pyrotec

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“…On the other hand, the pollution of water and wastewater and finally soil is significant in the process of explosives production [1]. Various methods have been used to determine explosives purity and trace amounts in natural samples that can be referred to gas chromatography (GC) [2], mass spectroscopy (MS) [3], high-performance liquid chromatography (HPLC) [4], thin layer chromatography (TLC) [5], ion mobility spectrometer (IMS) [6], voltammetry [7], luminescence (photo and chemiluminescence), and so on.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of CL‐20 explosive by smartphone‐based chemiluminescence method

Rafee,

Pouretedal,

Damiri

2024

Luminescence

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A new smartphone‐based chemiluminescence method has been introduced for the quantitative analysis of CL‐20 (Hexanitroazaisowuertzitan) explosive. The solvent mixture, oxidizer agent, and concentration of the reactants were optimized using statistical procedures. CL‐20 explosive showed a quenching effect on the chemiluminescence intensity of the luminol−NaClO reaction in the solvent mixture of DMSO/H2O. A smartphone was used as a detector to record the light intensity of chemiluminescence reaction as a video file. The recorded video file was converted to an analytical signal as intensity luminescence–time curve by a written code in MATLAB software. Dynamic range and limit of detection of the proposed method were obtained 2.0–240.0 and 1.1 mg⋅L−1, respectively, in optimized concentrations 1.5 × 10−3 mol⋅L−1 luminol and 1.0 × 10−2 mol⋅L−1 NaClO. Precursors TADB, HBIW, and TADNIW in CL‐20 explosive synthesis did not show interference in measurement the CL‐20 purity. The analysis of CL‐20 spiked samples of soil and water indicated the satisfactory ability of the method in the analysis of real samples. The interaction of CL‐20 molecules and OCl− ions is due to quench of chemiluminescence reaction of the luminol−NaClO.

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“…Methods that are not appropriate for on-site detection, such as capillary electrophoresis, high-performance liquid chromatography with ultraviolet detection (HPLC–UV), and tandem chromatographic techniques, − were developed for the first time in the 90’s for the determination of NTO. Later, after the development of ion mobility spectroscopy (IMS)-based method suitable for field analysis, surface-enhanced Raman spectroscopy (SERS), − laser-induced breakdown spectroscopy (LIBS), fluorescence turn-on, fluorescence quenching, and electrochemistry-based methods continued to be developed for NTO determination. In 2012, the simultaneous determination of NTO and TNT was performed by our research group utilizing spectrophotometry and chromatography techniques.…”

Section: Introductionmentioning

confidence: 99%

Naked-Eye Detection of 3-Nitro-1,2,4-triazole-5-one at Sub-Femtomolar Levels with Melamine and Unlabeled Au Nanoparticles

Durmazel

Üzer

Apak

2022

ACS Appl. Nano Mater.

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In this paper, a simple and rapid nanosensing assay was developed for 3-nitro-1,2,4-triazole-5-one (NTO) exploiting target-directed adsorption by unlabeled gold nanoparticles (AuNPs) and competitive supramolecular association of NTO with melamine (MEL). While AuNPs aggregated in the presence of MEL with a color change from red to blue, AuNPs remained dispersed and retained their original plasmonic red color with the addition of NTO, owing to the hydrogen bonding affinity of the NTO triazole ring to MEL. The concentration of NTO leading to color change could be determined with the naked-eye even at the sub-femtomolar level. Analytical results showed that the absorption ratio (A 520nm/A 630nm) varied linearly with the logarithm of NTO concentration in the range of 3.08 × 10–16 to 3.08 × 10–12 mol L–1 with a correlation coefficient of 0.9994. The synthesized and resultant AuNPs (in the presence of NTO and/or MEL) were characterized using ultraviolet–visible spectrophotometry, scanning transmission electron microscopy, attenuated total reflectance-Fourier transform infrared spectroscopy, and ζ-potential measurements. Possible interferences of various energetic substances in synthetic mixtures containing 2,4,6-trinitrotoluene (TNT), 2,4,6-trinitrophenol, hexahydro-1,3,5-trinitro-1,3,5-triazine, and ammonium nitrate, of possible camouflage materials used in passenger belongings such as cationic surfactants (cetyltrimethylammonium bromide and cetylpyridinium chloride), d-(+)-glucose as a representative sugar, acetylsalicylic acid- and paracetamol-based painkiller drugs, and of commonly found soil ions (Cl–, NO3 –, SO4 2–, Ca2+, Mg2+, CuII, FeII/III, and AgI) were also examined. In addition, recovery of NTO was successfully performed from NTO-based melt-cast formulations consisting of mixtures of TNT and NTO. The proposed method was statistically validated against a reference liquid chromatography–tandem mass spectrometry method applied to NTO standards, NTO-contaminated soil, and loam samples.

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Fabrication of a nanostructured TiO₂/carbon nanotube composite electrode for voltammetric and impedimetric determination of NTO explosive in the water and soil samples

Cited by 9 publications

References 35 publications

Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Quantitative analysis of CL‐20 explosive by smartphone‐based chemiluminescence method

Naked-Eye Detection of 3-Nitro-1,2,4-triazole-5-one at Sub-Femtomolar Levels with Melamine and Unlabeled Au Nanoparticles

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Fabrication of a nanostructured TiO2/carbon nanotube composite electrode for voltammetric and impedimetric determination of NTO explosive in the water and soil samples

Cited by 9 publications

References 35 publications

Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Electrochemical determination of insensitive munition constituents 3‐nitro‐1,2,4‐triazol‐5‐one (NTO) using gold nanoparticle/carbon nanotube‐modified pencil graphite electrode in groundwater sample

Quantitative analysis of CL‐20 explosive by smartphone‐based chemiluminescence method

Naked-Eye Detection of 3-Nitro-1,2,4-triazole-5-one at Sub-Femtomolar Levels with Melamine and Unlabeled Au Nanoparticles

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Fabrication of a nanostructured TiO₂/carbon nanotube composite electrode for voltammetric and impedimetric determination of NTO explosive in the water and soil samples