Investigation of Sensor Made of ZnO:La for Detection of Hydrogen Peroxide Vapours by Impedance Spectroscopy Method

Shahkhatuni, G. H.; Aroutiounian, V. M.; Arakelyan, V. M.; Aleksanyan, M. S.; Shahnazaryan, G. E.

doi:10.3103/s1068337219020117

Cited by 11 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, the monitoring of HPV in human exhaled air allows the noninvasive diagnosis of various diseases such as chronic obstructive pulmonary disease (COPD), cancer, asthma, and traumatic brain injury. Due to such a wide range of applications, the demand for developing highly sensitive HPV sensors is increasing year by year [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes

Aleksanyan¹,

Sayunts²,

Shahkhatuni³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

In this work, a high-sensitive flexible sensor based on the SnO2 nanoparticles decorated with the multi-walled carbon nanotubes (MWCNTs) was fabricated by a simple and cost-effective centrifugation method for hydrogen peroxide vapour (HPV) detection. Morphological, composition, structural, and HPV sensing studies of the film were thoroughly conducted. Scanning electron microscopy (SEM) revealed the presence of MWCNTs in the SnO2 material and energy dispersive x-ray (EDX) elementary analysis determined the actual concentration of carbon elements (24.47 wt%) in the SnO2:MWCNTs material with pronounced peaks of C, O, and Sn. Elemental mapping analysis showed the nearly homogeneous distribution of the elements while x-ray diffraction analysis (XRD) confirmed the diffraction peaks of tin oxide and carbon. The HPV sensing behaviour of the flexible SnO2:MWCNTs sensor was investigated in the temperature range of 25 °C–150 °C towards 1.5–56 ppm HPV under ultraviolet (UV) irradiation. The flexible sensor had a fairly high response (44) to 1.5 ppm of HPV concentration at room temperature (RT). The fabricated SnO2:MWCNTs based sensor was capable of detecting extremely low concentrations of HPV, thus being a potential candidate for use in real environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes

Aleksanyan¹,

Sayunts²,

Shahkhatuni³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…Impedance spectroscopy can be successfully applied to dynamic measurements of the responses of gas sensing materials [6,7]. A.c. mode of operation presents many advantages over the classical d.c. electrical signals usually employed for gas sensing [1] such as:…”

Section: Introductionmentioning

confidence: 99%

Metrology and Measurement Systems

Szafraniak

Kusior

Radecka

et al. 2020

View full text Add to dashboard Cite

Alternating current a.c. measurements enable to understand the physical and chemical processes occurring in semiconductor materials. Impedance spectroscopy has been successfully applied to study the responses of gas sensors based on metal oxides, such as TiO 2 , SnO 2 and TiO 2 /SnO 2 nanocomposites. This work is devoted to dynamic measurements of hydrogen sensor behaviour over the temperature range of 300-450 • C. Frequency dependence of the impedance signal gives evidence that 50 mol% TiO 2 /50 mol% SnO 2 nanocomposites should be treated as resistive-type sensors. Temporal evolution of the response to 500 ppm H 2 at 320 • C indicates a very short response time and much longer recovery.

show abstract

Detection of hydrogen peroxide using dioxazaborocanes: elucidation of the sensing mechanism at the molecular level by NMR and XPS measurements

et al. 2020

View full text Add to dashboard Cite

show abstract

Investigation of Sensor Made of ZnO:La for Detection of Hydrogen Peroxide Vapours by Impedance Spectroscopy Method

Cited by 11 publications

References 23 publications

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes

Metrology and Measurement Systems

Detection of hydrogen peroxide using dioxazaborocanes: elucidation of the sensing mechanism at the molecular level by NMR and XPS measurements

Contact Info

Product

Resources

About

Investigation of Sensor Made of ZnO:La for Detection of Hydrogen Peroxide Vapours by Impedance Spectroscopy Method

Cited by 11 publications

References 23 publications

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO2 nanoparticles decorated with multi-walled carbon nanotubes

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO2 nanoparticles decorated with multi-walled carbon nanotubes

Metrology and Measurement Systems

Detection of hydrogen peroxide using dioxazaborocanes: elucidation of the sensing mechanism at the molecular level by NMR and XPS measurements

Contact Info

Product

Resources

About

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO₂ nanoparticles decorated with multi-walled carbon nanotubes