Manufacturing and investigations of i-butane sensor made of SnO2/multiwall-carbon-nanotube nanocomposite

Aroutiounian, V. M.; Arakelyan, V. M.; Khachaturyan, E. A.; Shahnazaryan, G. E.; Aleksanyan, M. S.; Forró, Lászlø; Magrez, Arnaud; Hernádi, Klára; Németh, Zoltán

doi:10.1016/j.snb.2012.04.039

Cited by 29 publications

(18 citation statements)

References 19 publications

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“…Surface modification of the CNTs/metal-oxide hybrid gas sensors was carried out with noble metals (Pt, Pd, Au, Ru, and Rh). It leads to an improvement of the sensitivity and selectivity of gas sensors [63][64]. As usually, the re-sponse (sensitivity) to gases of the MWCNT/SnO 2 / Pd sensors was determined as the ratio of the sensor resistance in the air (R air ) to the sensor resistance in the presence of the pollutant after reaching a steady state (R gas ).…”

Section: Gas Sensors Made From Metal Oxides Decorated With Cntsmentioning

confidence: 99%

Metal oxide gas sensors decorated with carbon nanotubes

Aroutiounian¹

2016

Lith. J. Phys.

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Gas sensors made from carbon nanotubes without their doping and functionalization have serious shortcomings. Analysis of physics and techniques of decoration (functionalization) of carbon nanotubes using organic polymers, doping with impurities, metallic nanoparticle/nanoclusters is carried out. The development of metal oxide nanocomposite sensors decorated with carbon nanotubes is very promising for realization of detectors of different important gases with dramatically improved response, better time characteristics and smaller consumed power.

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Section: Gas Sensors Made From Metal Oxides Decorated With Cntsmentioning

confidence: 99%

Metal oxide gas sensors decorated with carbon nanotubes

Aroutiounian¹

2016

Lith. J. Phys.

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“…We established earlier that the addition of MWCNTs into the SnO 2 metal oxide allowed improving the long-time stability of the sensor parameters, increasing the operation speed, as well as decreasing in the work body temperature of the sensor (Aroutiounian et al 2012, Aroutiounian et al 2013a. It is possible even detect isobutane using such a sensor.…”

Section: Introductionmentioning

confidence: 98%

“…Results of measurements of the sensors response to ethanol vapors were analyzed. We use standard techniques for manufacture of gas sensors and measurements of the work body temperature (see for example Aroutiounian et al 2012, Aroutiounian et al 2013a).…”

Section: Introductionmentioning

confidence: 99%

The ethanol sensors made from α-Fe<sub>2</sub>O<sub>3</sub> decorated with multiwall carbon nanotubes

Aroutiounian¹,

Arakelyan²,

Shahnazaryan³

et al. 2015

Advances in nano research

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Thin film ethanol sensors made from α-Fe 2 O 3 decorated with multiwall carbon nanotubes (MWCNTs) were manufactured by the electron beam deposition method. The morphology of the decorated α-Fe 2 O 3 /MWCNTs (25:1 weight ratios) nanocomposite powder was investigated using the scanning electron microscopy and X-ray diffraction techniques. The thickness of thin films has been determined from ellipsometric measurements. The response of manufactured sensors was investigated at different temperatures of the sensor work body and concentration of gas vapors. Good response of prepared sensors to ethanol vapors already at work body temperature of 150°С was shown.

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“…So, MWCNT can be called as photo-generated electron acceptor that enhances interfacial electron transfer process, whereas the semiconductors are good electron donors under irradiation. [7][8][9][10] Applying different preparation methods, many types of semiconductor metal oxides, such as TiO 2 , 11,12 SnO 2 , 13 Cu 2 O, 14 CeO 2 15 and ZnO [16][17][18] have been coated on MWCNT in earlier studies.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Efficiency of ZnO/MWCNT Nanocomposites Prepared Under Different Solvent Conditions

Bartfai

Németh

Mrabate

et al. 2019

j nanosci nanotechnol

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Here we report the application of zinc oxide (ZnO) coated multi-walled carbon nanotube (MWCNT) composites in the photocatalytic decomposition of acetaldehyde (AA). Zinc oxide nanoparticles were successfully coated on the multi-walled carbon nanotube via impregnation process using zinc acetate (Zn(CH 3 COO) 2 × 2H 2 O) as precursor and sodium dodecyl sulfate (SDS) treated multiwalled carbon nanotube as raw material under different solvent conditions. The applied solvents during preparation were ethanol (EtOH) and water (H 2 O). As-prepared materials were characterized by thermal analysis (TG), X-ray diffraction (XRD), specific surface area measurement (BET) and transmission electron microscopy (TEM) techniques. Photocatalytic efficiencies of as-prepared composites were investigated in a stationary reactor equipped with UV lamp. Decomposition of acetaldehyde was followed by using gas chromatography (GC). Observations revealed that using impregnation method and different solvents the preparation of ZnO/MWCNT nanocomposites can be controlled easily. The highest degradation rate was achieved with the nanocomposite was synthetized using ethanol as solvent. The photocatalytic experiments revealed that the composite has higher photocatalytic activity than that of both the zinc oxide nanoparticles and the mechanical mixture of multi-walled carbon nanotube and zinc oxide.

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Manufacturing and investigations of i-butane sensor made of SnO2/multiwall-carbon-nanotube nanocomposite

Cited by 29 publications

References 19 publications

Metal oxide gas sensors decorated with carbon nanotubes

Metal oxide gas sensors decorated with carbon nanotubes

The ethanol sensors made from α-Fe<sub>2</sub>O<sub>3</sub> decorated with multiwall carbon nanotubes

Synthesis, Characterization and Photocatalytic Efficiency of ZnO/MWCNT Nanocomposites Prepared Under Different Solvent Conditions

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