Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene
The fast response of H<sub>2</sub> sensors plays an important role in the early warning of H<sub>2</sub> leakage; in this work, a nanoscale <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><m...
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MDPI AG
2024-11-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/12/12/250 |
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| author | Bin Shen Qinglan Zhang Xinlei Liu Jiazhe Li Yu Guan Dan Xiao |
| author_facet | Bin Shen Qinglan Zhang Xinlei Liu Jiazhe Li Yu Guan Dan Xiao |
| author_sort | Bin Shen |
| collection | DOAJ |
| description | The fast response of H<sub>2</sub> sensors plays an important role in the early warning of H<sub>2</sub> leakage; in this work, a nanoscale <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">γ</mi></mrow></semantics></math></inline-formula>-Al<sub>2</sub>O<sub>3</sub> carrier material was prepared using the precipitation method and a new hydrogen sensor was prepared by doping and modifying it with graphene. During the detecting part of the experiment, the voltage–current–temperature detecting system was designed based on the principle of voltage division and shunt, and the theoretical operating temperature computational model was established in parallel. After testing, it was shown that the sensor had a good linear relationship for the range of 1000–10,000 ppm H<sub>2</sub>; the operating temperature was only 176 °C at 1.4 V operating voltage, the T<sub>90</sub> response time was 6.69 s, and the average sensitivity and temperature rise characteristics were 28.23 mV/1% H<sub>2</sub> and 36.77 °C/1% H<sub>2</sub>, respectively. Moreover, the calculated theoretical operating temperature and the measured temperature were basically consistent. This work provides a useful reference for further exploration of H<sub>2</sub> sensors. |
| format | Article |
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| institution | Kabale University |
| issn | 2227-9040 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-ffc1c707973946eeae0eb74899a8108c2024-12-27T14:17:03ZengMDPI AGChemosensors2227-90402024-11-01121225010.3390/chemosensors12120250Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified GrapheneBin Shen0Qinglan Zhang1Xinlei Liu2Jiazhe Li3Yu Guan4Dan Xiao5School of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaSchool of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaSchool of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaSchool of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaSchool of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaSchool of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, ChinaThe fast response of H<sub>2</sub> sensors plays an important role in the early warning of H<sub>2</sub> leakage; in this work, a nanoscale <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">γ</mi></mrow></semantics></math></inline-formula>-Al<sub>2</sub>O<sub>3</sub> carrier material was prepared using the precipitation method and a new hydrogen sensor was prepared by doping and modifying it with graphene. During the detecting part of the experiment, the voltage–current–temperature detecting system was designed based on the principle of voltage division and shunt, and the theoretical operating temperature computational model was established in parallel. After testing, it was shown that the sensor had a good linear relationship for the range of 1000–10,000 ppm H<sub>2</sub>; the operating temperature was only 176 °C at 1.4 V operating voltage, the T<sub>90</sub> response time was 6.69 s, and the average sensitivity and temperature rise characteristics were 28.23 mV/1% H<sub>2</sub> and 36.77 °C/1% H<sub>2</sub>, respectively. Moreover, the calculated theoretical operating temperature and the measured temperature were basically consistent. This work provides a useful reference for further exploration of H<sub>2</sub> sensors.https://www.mdpi.com/2227-9040/12/12/250sensorcatalyst carrieroperating temperaturecombustible gases |
| spellingShingle | Bin Shen Qinglan Zhang Xinlei Liu Jiazhe Li Yu Guan Dan Xiao Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene Chemosensors sensor catalyst carrier operating temperature combustible gases |
| title | Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene |
| title_full | Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene |
| title_fullStr | Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene |
| title_full_unstemmed | Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene |
| title_short | Fast-Response Hydrogen Sensor Based on γ-Al<sub>2</sub>O<sub>3</sub>-Modified Graphene |
| title_sort | fast response hydrogen sensor based on γ al sub 2 sub o sub 3 sub modified graphene |
| topic | sensor catalyst carrier operating temperature combustible gases |
| url | https://www.mdpi.com/2227-9040/12/12/250 |
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