The investigation of coating materials for the detection of nitrobenzene with coated quartz piezoelectric crystals

Sanchez-Pedreno, J.A.O.; Drew, P.K.P.; Alder, John F.

doi:10.1016/s0003-2670(00)82466-6

Cited by 25 publications

(7 citation statements)

References 2 publications

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“…A brief discussion of the coatings that have been used on SAW devices to detect hydrocarbons and of the detection limits and linear ranges of the devices is presented. Powdered activated charcoal, polyethylene glycol (PEG-400, PEG-750), quadrol, and tetrabase have been used to detect nitrobenzene with a 15-MHz quartz crystal (Sanchez-Pedreno et al 1986). A linear response from 2-10 ppm (volume) (ppmv) was found.…”

Section: Applicationsmentioning

confidence: 99%

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Carpenter¹,

Doskey²,

Erickson³

et al. 1994

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Section: Applicationsmentioning

confidence: 99%

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Carpenter¹,

Doskey²,

Erickson³

et al. 1994

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“…The detection of explosives and particularly nitroaromatic compounds using a QCM sensor has been widely studied. 14,15 Generally, organic molecules or polymers are used as sensitive coatings for sensors for nitroaromatic compound detection.…”

Section: Introductionmentioning

confidence: 99%

“…a UPMC Universite ´Pierre et Marie Curie, UMR CNRS 7197, Laboratoire de For instance, the detection of nitrobenzene was demonstrated thanks to thin films of amine derivatives 14 or copper phthalocyanine 16 but the selectivity remains poor. Zhang et al 17 have proposed the use of a conjugated polymer such as polypentiptycene to detect TNT and metalloporphyrins.…”

Section: Introductionmentioning

confidence: 99%

Elaboration, activity and stability of silica-based nitroaromatic sensors

Mercier

Pereira

Méthivier

et al. 2013

Phys. Chem. Chem. Phys.

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Functionalized silica-based thin films, modified with hydrophobic groups, were synthesized and used as sensors for nitroaromatic compound (NAC) specific detection. Their performance and behavior, in terms of stability, ageing and regeneration, have been fully characterized by combining chemical characterization techniques and electron microscopy. NAC was efficiently and specifically detected using these silica-based sensors, but showed a great degradation in the presence of humidity. Moreover, the sensor sensitivity seriously decreases with storage time. Methyl- and phenyl-functionalization helped to overcome this humidity sensitivity. Surface characterization enabled us to establish a direct correlation between the appearance, and increasing amount, of adsorbed carbonyl-containing species, and sensor efficiency. This contamination, appearing after only one month, was particularly important when sensors were stored in plastic containers. Rinsing with cyclohexane enables us to recover part of the sensor performance but does not yield a complete regeneration of the sensors. This work led us to the definition of optimized elaboration and storage conditions for nitroaromatic sensors.

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“…Chemical modification of working electrodes with nanostructures is shown to improve sensitivity and/or selectivity over conventional bare electrodes (Zhang et al 2007). Nanostructures comprising of various organic and inorganic materials and their composites have been used for electrode modification to detect NB (Luo et al (2010); Ma et al (2011);Sanchez-Pedreno et al 1986;Lorenzo et al 1988;Liu et al 2006;Qi et al 2008). Silver being among the best conductors forms a good candidate and the electrodes modified with silver nanoparticles exhibit improved current response and sensitivity due to increased electrode/catalytic surface area.…”

Section: Introductionmentioning

confidence: 99%

Sensing behavior study of silica-coated Ag nanoparticles deposited on glassy carbon toward nitrobenzene

et al. 2012

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In this study, we report the synthesis and characterization of silica-coated silver core/shell nanostructures (NSs) and their sensing behavior when deposited on glassy carbon (GC) electrode for nitrobenzene (NB) detection. Synthesized silica-coated silver core/shell NSs were characterized for their chemical, structural and morphological properties. TEM analysis confirmed that the silica-coated silver nanoparticles (size *200 nm) are spherical in shape and the core diameter is *38 nm. FT-IR spectra also confirmed the coating of silica on the surface of silver nanoparticles. Cyclic voltammetry studies of NB with silica-coated silver core-shell nanoparticles-modified GC electrodes revealed two cathodic peaks at -0.74 V (C 1 ) and -0.34 V (C 2 ) along with two anodic peaks at -0.64 V (A 1 ) and -0.2 V (A 2 ). Enhanced cathodic peak current (C 1 , I P ) of the coreshell NSs-modified electrode is observed relative to bare and silica-modified electrodes. Amperometric studies revealed a very high current sensitivity (114 nA/nM) and linearly dependent reduction current with NB amount in the low concentration range and a detection limit of 25 nM. Moreover, the core-shell NSs-modified electrode showed good reproducibility and selectivity toward NB in the presence of many cationic, anionic, and organic interferents.

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The investigation of coating materials for the detection of nitrobenzene with coated quartz piezoelectric crystals

Cited by 25 publications

References 2 publications

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Elaboration, activity and stability of silica-based nitroaromatic sensors

Sensing behavior study of silica-coated Ag nanoparticles deposited on glassy carbon toward nitrobenzene

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