Journal ArticleDOI
A new method based on headspace adsorptive accumulation using a carboxylated multi-walled carbon nanotubes modified electrode: application for trace determination of nitrobenzene and nitrotoluene in water and wastewater
Ali Reza Fakhari,Hamid Ahmar +1 more
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In this paper, a carboxylated multi-walled carbon nanotubes modified glassy carbon (MWCNTs-GC) electrode was fabricated via the drop-casting of a CARNITES suspension onto a glassy electrode.Abstract:
A carboxylated multi-walled carbon nanotubes modified glassy carbon (MWCNTs-GC) electrode was fabricated via the drop-casting of a carboxylated carbon nanotubes suspension onto a glassy carbon electrode. A headspace adsorptive accumulation on the surface of the multi-walled carbon nanotubes modified glassy carbon electrode coupled with cyclic voltammetry has been established for analyzing nitrobenzene and 4-nitrotoluene in water samples. Factors which affect the extraction efficiency (modifier amount, pH, extraction temperature, extraction time, salt addition) have been investigated. The calibration plot for the determination of nitrobenzene and 4-nitrotoluene are linear in the wide ranges of 10–4000 ng mL−1 and 20–6000 ng mL−1 respectively. Under optimal extraction conditions, the detection limits (at S/N = 3) for nitrobenzene and 4-nitrotoluene were 3.0 ng mL−1 and 6.0 ng mL−1 respectively. The proposed method has been applied successfully for the determination of nitrobenzene and nitrotoluene in water and wastewater samples within a recovery range of ca. 97.5–103.33%.read more
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Electrochemical investigation of gold nanoparticles incorporated zinc based metal-organic framework for selective recognition of nitrite and nitrobenzene
Dharmendra Kumar Yadav,Vellaichamy Ganesan,Piyush Kumar Sonkar,Rupali Gupta,Pankaj Kumar Rastogi +4 more
TL;DR: An electrochemical sensing platform which comprises gold nanoparticles (Au NPs) incorporated zinc based metal-organic framework (MOF-5) is developed for the sensitive determination of nitrite and nitrobenzene as mentioned in this paper.
Journal ArticleDOI
Biosynthesis of silver nanoparticles by using Camellia japonica leaf extract for the electrocatalytic reduction of nitrobenzene and photocatalytic degradation of Eosin-Y.
Raj Karthik,Mani Govindasamy,Shen-Ming Chen,Yi-Hui Cheng,P. Muthukrishnan,S. Padmavathy,A. Elangovan +6 more
TL;DR: Results indicated that the growth of sphere-like Ag-NPs should be a proficient in the presence of common metal ions and nitroaromatic containing substances.
Journal ArticleDOI
A review of the advanced developments of electrochemical sensors for the detection of toxic and bioactive molecules
Rasu Ramachandran,Tse-Wei Chen,Shen-Ming Chen,Thangaraj Baskar,Ramanjam Kannan,Perumal Elumalai,Paulsamy. Raja,Tharini Jeyapragasam,K. Dinakaran,George peter Gnana kumar +9 more
TL;DR: In this paper, the design and development of novel sensitive and cost-effective electrochemical sensors based on various classes of nanocomposites fabricated by different methods for the detection of biomolecules (glucose, dopamine, ascorbic acid and uric acid), heavy metal ions (Pb2+, Hg2+, Cd2+ and As3+) and environmental pollutants (hydrazine, nitrobenzene, nitrophenols and pesticides) are reviewed.
Journal ArticleDOI
Palladium nanoparticles incorporated polymer-silica nanocomposite based electrochemical sensing platform for nitrobenzene detection
TL;DR: In this article, a novel electrochemical sensing platform for nitrobenzene (NB) has been developed using palladium nanoparticles decorated polymer-silica nanocomposite (represented as Pd-GG-g-PAM-Silica).
Journal ArticleDOI
Electrochemical study of nitrobenzene reduction using novel Pt nanoparticles/macroporous carbon hybrid nanocomposites.
TL;DR: A sensitive NB sensor was developed based on the PNMPC/GC electrode, which showed a wide linear range, low detection limit, high sensitivity, excellent anti-interference ability and good stability, and was successfully applied to the determination of NB in real samples.
References
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Determination of organic compounds in water using dispersive liquid-liquid microextraction
Mohammad Rezaee,Yaghoub Assadi,Mohammad Reza Milani Hosseini,Elham Aghaee,Fardin Ahmadi,Sana Berijani +5 more
TL;DR: The ability of DLLME technique in the extraction of other organic compounds such as organochlorine pesticides, organophosphorus pesticides and substituted benzene compounds were studied.
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Applications of solid-phase microextraction in food analysis.
TL;DR: The SPME technique can be used routinely in combination with gas Chromatography (GC), GC-mass spectrometry (GC-MS), high-performance liquid chromatography (HPLC) or LC-MS, and can improve the detection limits.
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Nanostructuring electrodes with carbon nanotubes: A review on electrochemistry and applications for sensing
TL;DR: Carbon nanotubes have attracted enormous interest in electrochemistry because of their small size and good electrochemical properties as discussed by the authors, and the vast majority of studies thus far have used ensembles of carbon-nanotubes to nanostructured macroscopic electrodes either with randomly dispersed or with aligned carbon-nodes.
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Role of carbon nanotubes in electroanalytical chemistry: A review
TL;DR: This review covers recent advances in the development of new designs of electrochemical sensors and biosensors that make use of electrode surfaces modification with carbon nanotubes.
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Carbon nanotubes: Solid-phase extraction.
Lidia M. Ravelo-Pérez,Antonio V. Herrera-Herrera,Javier Hernández-Borges,Miguel Ángel Rodríguez-Delgado +3 more
TL;DR: This review article pretends to focus on the most important features and different applications of SPE using CNTs (including matrix solid-phase dispersion and solid- phase microextraction) covering articles published since their introduction up to now (September 2009).