SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application
Porous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method. To understand some of the physical–chemical processes that occurred during the adsorption of gas molecules on the s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/2310-2861/9/4/283 |
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| author | Irina Kononova Vyacheslav Moshnikov Pavel Kononov |
| author_facet | Irina Kononova Vyacheslav Moshnikov Pavel Kononov |
| author_sort | Irina Kononova |
| collection | DOAJ |
| description | Porous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method. To understand some of the physical–chemical processes that occurred during the adsorption of gas molecules on the surface of the produced nanostructures, two models—the Langmuir model and the Brunauer–Emmett–Teller theory—were used to carry out calculations. The results of the phase analysis concerning the interaction between the components during the formation of the nanostructures were obtained through the use of X-ray diffraction, thermogravimetric analysis, the Brunauer–Emmett–Teller technique (to determine the surface areas), the method of partial pressure diagrams in a wide range of temperatures and pressures and the results of the measurement of the nanocomposites’ sensitivity. The analysis allowed us to find the optimal temperature for annealing nanocomposites. The introduction of a semiconductor additive into a two-component system based on tin and silica dioxides significantly increased the sensitivity of the nanostructured layers to reductional reagent gases. |
| first_indexed | 2024-03-11T05:00:12Z |
| format | Article |
| id | doaj.art-878b6de79ac8478fb466b634c9ddb86f |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-11T05:00:12Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-878b6de79ac8478fb466b634c9ddb86f2023-11-17T19:21:15ZengMDPI AGGels2310-28612023-03-019428310.3390/gels9040283SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing ApplicationIrina Kononova0Vyacheslav Moshnikov1Pavel Kononov2Department of Micro- and Nanoelectronics, Faculty of Electronics, Saint-Petersburg Electrotechnical University “LETI”, 5, pr. Popova, 197022 Saint-Petersburg, RussiaDepartment of Micro- and Nanoelectronics, Faculty of Electronics, Saint-Petersburg Electrotechnical University “LETI”, 5, pr. Popova, 197022 Saint-Petersburg, RussiaDepartment of Descriptive Geometry and Graphics, Faculty of Basic and Human Sciences, Saint-Petersburg Mining University, 2, 21st Line, 199106 Saint-Petersburg, RussiaPorous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method. To understand some of the physical–chemical processes that occurred during the adsorption of gas molecules on the surface of the produced nanostructures, two models—the Langmuir model and the Brunauer–Emmett–Teller theory—were used to carry out calculations. The results of the phase analysis concerning the interaction between the components during the formation of the nanostructures were obtained through the use of X-ray diffraction, thermogravimetric analysis, the Brunauer–Emmett–Teller technique (to determine the surface areas), the method of partial pressure diagrams in a wide range of temperatures and pressures and the results of the measurement of the nanocomposites’ sensitivity. The analysis allowed us to find the optimal temperature for annealing nanocomposites. The introduction of a semiconductor additive into a two-component system based on tin and silica dioxides significantly increased the sensitivity of the nanostructured layers to reductional reagent gases.https://www.mdpi.com/2310-2861/9/4/283sol–gel processporous nanocompositestin dioxideindium oxidegas sensitivity |
| spellingShingle | Irina Kononova Vyacheslav Moshnikov Pavel Kononov SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application Gels sol–gel process porous nanocomposites tin dioxide indium oxide gas sensitivity |
| title | SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application |
| title_full | SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application |
| title_fullStr | SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application |
| title_full_unstemmed | SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application |
| title_short | SnO<sub>2</sub>-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application |
| title_sort | sno sub 2 sub based porous nanomaterials sol gel formation and gas sensing application |
| topic | sol–gel process porous nanocomposites tin dioxide indium oxide gas sensitivity |
| url | https://www.mdpi.com/2310-2861/9/4/283 |
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