Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium
Paper-based sensors fabricated using the pencil-on-paper method are expected to find wide usage in many fields owing to their low cost and high reproducibility. Here, hydrogen (H<sub>2</sub>) detection was realized by applying palladium (Pd) nanoparticles (NPs) to electronic circuits pri...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/14/3050 |
| _version_ | 1798005083567292416 |
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| author | Nam Hee Lee Un-Bong Baek Seung-Hoon Nahm |
| author_facet | Nam Hee Lee Un-Bong Baek Seung-Hoon Nahm |
| author_sort | Nam Hee Lee |
| collection | DOAJ |
| description | Paper-based sensors fabricated using the pencil-on-paper method are expected to find wide usage in many fields owing to their low cost and high reproducibility. Here, hydrogen (H<sub>2</sub>) detection was realized by applying palladium (Pd) nanoparticles (NPs) to electronic circuits printed on paper using a metal mask and a pencil. We confirmed that multilayered graphene was produced by the pencil, and then characterized Pd NPs were added to the pencil marks. To evaluate the gas-sensing ability of the sensor, its sensitivities and reaction rates in the presence and absence of H<sub>2</sub> were measured. In addition, sensing tests performed over a wide range of H<sub>2</sub> concentrations confirmed that the sensor had a detection limit as low as 1 ppm. Furthermore, the sensor reacted within approximately 50 s at all H<sub>2</sub> concentrations tested. The recovery time of the sensor was 32 s at 1 ppm and 78 s at 1000 ppm. Sensing tests were also performed using Pd NPs of different sizes to elucidate the relationship between the sensing rate and catalyst size. The experimental results confirmed the possibility of fabricating paper-based gas sensors with a superior sensing capability and response rate. |
| first_indexed | 2024-04-11T12:34:44Z |
| format | Article |
| id | doaj.art-ad05b4e884eb4848ae38050916c26432 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:34:44Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ad05b4e884eb4848ae38050916c264322022-12-22T04:23:40ZengMDPI AGSensors1424-82202019-07-011914305010.3390/s19143050s19143050Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with PalladiumNam Hee Lee0Un-Bong Baek1Seung-Hoon Nahm2Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, KoreaEnergy Materials Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, KoreaEnergy Materials Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, KoreaPaper-based sensors fabricated using the pencil-on-paper method are expected to find wide usage in many fields owing to their low cost and high reproducibility. Here, hydrogen (H<sub>2</sub>) detection was realized by applying palladium (Pd) nanoparticles (NPs) to electronic circuits printed on paper using a metal mask and a pencil. We confirmed that multilayered graphene was produced by the pencil, and then characterized Pd NPs were added to the pencil marks. To evaluate the gas-sensing ability of the sensor, its sensitivities and reaction rates in the presence and absence of H<sub>2</sub> were measured. In addition, sensing tests performed over a wide range of H<sub>2</sub> concentrations confirmed that the sensor had a detection limit as low as 1 ppm. Furthermore, the sensor reacted within approximately 50 s at all H<sub>2</sub> concentrations tested. The recovery time of the sensor was 32 s at 1 ppm and 78 s at 1000 ppm. Sensing tests were also performed using Pd NPs of different sizes to elucidate the relationship between the sensing rate and catalyst size. The experimental results confirmed the possibility of fabricating paper-based gas sensors with a superior sensing capability and response rate.https://www.mdpi.com/1424-8220/19/14/3050hydrogenH<sub>2</sub> sensingpaper-based sensorpencil markspalladiumchemiresistor |
| spellingShingle | Nam Hee Lee Un-Bong Baek Seung-Hoon Nahm Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium Sensors hydrogen H<sub>2</sub> sensing paper-based sensor pencil marks palladium chemiresistor |
| title | Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium |
| title_full | Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium |
| title_fullStr | Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium |
| title_full_unstemmed | Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium |
| title_short | Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium |
| title_sort | hydrogen sensing using paper sensors with pencil marks decorated with palladium |
| topic | hydrogen H<sub>2</sub> sensing paper-based sensor pencil marks palladium chemiresistor |
| url | https://www.mdpi.com/1424-8220/19/14/3050 |
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