Ethanol gas sensor based on Al-doped ZnO nanomaterial with many gas diffusing channels

Yang, Zunxian; Huang, Yun; Chen, Guonan; Guo, Zaiping; Cheng, Shuying; Huang, Shizhen

doi:10.1016/j.snb.2009.04.052

Cited by 182 publications

(80 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A small Ni-Cr alloy coil was placed through the tube as a heater, which provided the operating temperature of the gas sensor. The similar tubes were described in literature 13,14 .…”

Section: Preparation Of Thick Film Gas Sensormentioning

confidence: 97%

High sensitivity ethanol gas sensor based on Sn - doped ZnO under visible light irradiation at low temperature

et al. 2014

View full text Add to dashboard Cite

Pure ZnO and 5at%, 7at%, 9at% Sn-doped ZnO materials are prepared by the chemical coprecipitation method. They were annealed by furnace at temperature range of 300-700°C in air for 1h. The ZnO materials are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the Sn-doped ZnO materials appear rough porous structures. The maximum sensitivity can be achieved by doping the amount of 7 at%. It has much better sensing performance towards ethanol vapor under visible light irradiation. The response and recovery time are ~1s and ~5s, respectively. The mechanism for the improvement in the sensing properties can be explained with the surface adsorption theory and the photoactivation theory.

show abstract

“…A small Ni-Cr alloy coil was placed through the tube as a heater, which provided the operating temperature of the gas sensor. The similar tubes were described in literature 13,14 .…”

Section: Preparation Of Thick Film Gas Sensormentioning

confidence: 97%

High sensitivity ethanol gas sensor based on Sn - doped ZnO under visible light irradiation at low temperature

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Kim et al, designed a metal-oxide chemoresistive gas sensor to detect ethanol at different ppm values. Yang et al, investigated the sensing mechanism of ZnO based nanomaterials towards ethanol gas [10], [13]. However, both technologies suffer from the high operating temperature (200º to 500ºC).…”

Section: Methodsmentioning

confidence: 99%

Improvement on Alcohol Breath-Analyzer Ethanol Biosensor based on Roselle-Chitosan Blend

Eljali

Nainggolan

Hashim

et al. 2017

IJECE

View full text Add to dashboard Cite

This paper presents a study on designing of a breath-analyzer ethanol biosensor through vaporization technology. A roselle extract and chitosan smart gel were used to fabricate the bio-sensing material. Sol-gel electrochemical deposition method was used to coat a thin film of the sensing material blend on patterned golden surface printed circuit board. Differentiation, response time and repeatability properties were studied by exposing 100ppm, 50ppm and 25ppm of ethanol vapor to the breath-analyzer. The accuracy of the breath-analyzer was tested by using I-V electrical testing. The analyzed data demonstrated that the breath-analyzer ethanol biosensor is capable of identifying the concentration of ethanol vapor at room temperature successfully, which can be used as analyzer of alcohol concentration when the sensor exposed to the exhale breath. The roselle-chitosan film sensors have shown the characteristic of a reliable sensor i.e. good sensitivity, selective, repeatable, able to recover and stable. Keyword:Biosensor Breath-analyzer Chitosan-roselle blend Ethanol

show abstract

“…Before 370°C, air resistance increases with increase in the temperature. Since the oxygen species capture conduction electrons from the materials, this leads to a decrease in the electron concentration (Yang et al, 2009) and the depletion layer becomes bigger, because of the higher concentration of the adsorbed oxygen. But above 370°C, the decrease in R a occurs since the adsorption reaction is exothermic and the reaction (O 2 +2e→2O − , O − +e→O 2− ) will proceed to the left.…”

Section: Sensing Propertiesmentioning

confidence: 99%

“…As a result, charging of electrons in the conduction band occurs, the depletion layer becomes smaller, and the R g drops which is followed by an increase in the sensitivity. The reactions are expressed as follows (Sberveglieri et al, 2008;Yang et al, 2009):…”

Section: Sensing Propertiesmentioning

confidence: 99%

Evaluation of ethanol gas sensing properties of ZnO nanopowder doped with Cu and Fe

Daryakenari¹

2012

Int. J. Phys. Sci.

View full text Add to dashboard Cite

Zinc oxide (ZnO) is one of the most important metal oxides having various applications in gas sensors. In the present work, ZnO nanoparticles were synthesized via sol-gel method. The nanopowder was then hydraulic-pressed and pre-sintered at 400°C to be molded into tablets with radius of 13 mm and thickness of 1.4 mm. Then, the sensor characteristics of ZnO nanopowder tablets were evaluated with respect to the ethanol. Finally, the tablets were doped with iron (Fe) and copper (Cu), and the effect of doping on sensing properties was studied.

show abstract

Ethanol gas sensor based on Al-doped ZnO nanomaterial with many gas diffusing channels

Cited by 182 publications

References 29 publications

High sensitivity ethanol gas sensor based on Sn - doped ZnO under visible light irradiation at low temperature

High sensitivity ethanol gas sensor based on Sn - doped ZnO under visible light irradiation at low temperature

Improvement on Alcohol Breath-Analyzer Ethanol Biosensor based on Roselle-Chitosan Blend

Evaluation of ethanol gas sensing properties of ZnO nanopowder doped with Cu and Fe

Contact Info

Product

Resources

About