Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour
Mesoporous semiconductor based gas sensors have been extensively researched and employed in the detection of traces poisonous and flammable gases such as nitrogen dioxide (NO2), carbon monoxide (CO), sulphur dioxide (SO2) and volatile organic compounds (VOCs) such as ethanol, methanol and acetone...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2021
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| Online Access: | http://eprints.usm.my/54998/ http://eprints.usm.my/54998/1/Modelling%20Of%20Gas%20Diffusion%20In%20Mesoporous%20Tin%20Dioxide%20%28SnO2%29%20As%20Gas%20Sensor%20In%20Detecting%20Acetone%20Vapour_Khamini%20Mohan_K4_2021_ESAR.pdf |
| _version_ | 1848882959794307072 |
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| author | Mohan, Khamini |
| author_facet | Mohan, Khamini |
| author_sort | Mohan, Khamini |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Mesoporous semiconductor based gas sensors have been extensively researched and employed in the detection of traces poisonous and flammable gases such as nitrogen dioxide (NO2),
carbon monoxide (CO), sulphur dioxide (SO2) and volatile organic compounds (VOCs) such as ethanol, methanol and acetone which are dangerous to both people and the environment. In
this research, mesoporous tin dioxide based gas sensor, SnO2 is utilized due to its low cost, high sensitivity and quick response. In order to determine the most effective techniques for optimising the gas sensing properties of mesoporous SnO2, the effect of acetone concentration and operating temperature on the sensitivity of a gas sensor was investigated using a diffusion mechanism model. The gas detecting mechanism was controlled by Knudsen diffusion of the target gas through the porous film and its interaction with adsorbed oxygen, which followed a first-order reaction kinetic. In the diffusion mechanism model equation, a general expression of sensitivity, S (Ra/Rg) as a function of pre-exponential constants, α0 and k0, reaction activation energy for gas dependent, Ea, universal gas constant, R, temperature, T, concentration, |
| first_indexed | 2025-11-15T18:43:12Z |
| format | Monograph |
| id | usm-54998 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:43:12Z |
| publishDate | 2021 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-549982022-09-29T05:13:07Z http://eprints.usm.my/54998/ Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour Mohan, Khamini T Technology TP Chemical Technology Mesoporous semiconductor based gas sensors have been extensively researched and employed in the detection of traces poisonous and flammable gases such as nitrogen dioxide (NO2), carbon monoxide (CO), sulphur dioxide (SO2) and volatile organic compounds (VOCs) such as ethanol, methanol and acetone which are dangerous to both people and the environment. In this research, mesoporous tin dioxide based gas sensor, SnO2 is utilized due to its low cost, high sensitivity and quick response. In order to determine the most effective techniques for optimising the gas sensing properties of mesoporous SnO2, the effect of acetone concentration and operating temperature on the sensitivity of a gas sensor was investigated using a diffusion mechanism model. The gas detecting mechanism was controlled by Knudsen diffusion of the target gas through the porous film and its interaction with adsorbed oxygen, which followed a first-order reaction kinetic. In the diffusion mechanism model equation, a general expression of sensitivity, S (Ra/Rg) as a function of pre-exponential constants, α0 and k0, reaction activation energy for gas dependent, Ea, universal gas constant, R, temperature, T, concentration, Universiti Sains Malaysia 2021-01-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/54998/1/Modelling%20Of%20Gas%20Diffusion%20In%20Mesoporous%20Tin%20Dioxide%20%28SnO2%29%20As%20Gas%20Sensor%20In%20Detecting%20Acetone%20Vapour_Khamini%20Mohan_K4_2021_ESAR.pdf Mohan, Khamini (2021) Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Kimia. (Submitted) |
| spellingShingle | T Technology TP Chemical Technology Mohan, Khamini Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title | Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title_full | Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title_fullStr | Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title_full_unstemmed | Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title_short | Modelling Of Gas Diffusion In Mesoporous Tin Dioxide (SnO2) As Gas Sensor In Detecting Acetone Vapour |
| title_sort | modelling of gas diffusion in mesoporous tin dioxide (sno2) as gas sensor in detecting acetone vapour |
| topic | T Technology TP Chemical Technology |
| url | http://eprints.usm.my/54998/ http://eprints.usm.my/54998/1/Modelling%20Of%20Gas%20Diffusion%20In%20Mesoporous%20Tin%20Dioxide%20%28SnO2%29%20As%20Gas%20Sensor%20In%20Detecting%20Acetone%20Vapour_Khamini%20Mohan_K4_2021_ESAR.pdf |