Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications
We report a breath hydrogen analyzer based on Pd-coated SnO<sub>2</sub> nanorods (Pd-SnO<sub>2</sub> NRs) sensor integrated into a miniaturized gas chromatography (GC) column. The device can measure a wide range of hydrogen (1–100 ppm), within 100 s, using a small volume of h...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/5/2056 |
| _version_ | 1797473664247005184 |
|---|---|
| author | Hwaebong Jung Junho Hwang Yong-Sahm Choe Hyun-Sook Lee Wooyoung Lee |
| author_facet | Hwaebong Jung Junho Hwang Yong-Sahm Choe Hyun-Sook Lee Wooyoung Lee |
| author_sort | Hwaebong Jung |
| collection | DOAJ |
| description | We report a breath hydrogen analyzer based on Pd-coated SnO<sub>2</sub> nanorods (Pd-SnO<sub>2</sub> NRs) sensor integrated into a miniaturized gas chromatography (GC) column. The device can measure a wide range of hydrogen (1–100 ppm), within 100 s, using a small volume of human breath (1 mL) without pre-concentration. Especially, the mini-GC integrated with Pd-SnO<sub>2</sub> NRs can detect 1 ppm of H<sub>2</sub>, as a lower detection limit, at a low operating temperature of 152 °C. Furthermore, when the breath hydrogen analyzer was exposed to a mixture of interfering gases, such as carbon dioxide, nitrogen, methane, and acetone, it was found to be capable of selectively detecting only H<sub>2</sub>. We found that the Pd-SnO<sub>2</sub> NRs were superior to other semiconducting metal oxides that lack selectivity in H<sub>2</sub> detection. Our study reveals that the Pd-SnO<sub>2</sub> NRs integrated into the mini-GC device can be utilized in breath hydrogen analyzers to rapidly and accurately detect hydrogen due to its high selectivity and sensitivity. |
| first_indexed | 2024-03-09T20:20:36Z |
| format | Article |
| id | doaj.art-9fc667a9059146d1b067f709d49f8910 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T20:20:36Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9fc667a9059146d1b067f709d49f89102023-11-23T23:50:25ZengMDPI AGSensors1424-82202022-03-01225205610.3390/s22052056Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer ApplicationsHwaebong Jung0Junho Hwang1Yong-Sahm Choe2Hyun-Sook Lee3Wooyoung Lee4Department of Materials Science and Engineering, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, KoreaDepartment of Materials Science and Engineering, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, KoreaIsenlab Inc., Halla Sigma Valley, Dunchon-daero 545, Jungwon-gu, Seongnam-si 13215, KoreaDepartment of Materials Science and Engineering, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, KoreaDepartment of Materials Science and Engineering, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 03722, KoreaWe report a breath hydrogen analyzer based on Pd-coated SnO<sub>2</sub> nanorods (Pd-SnO<sub>2</sub> NRs) sensor integrated into a miniaturized gas chromatography (GC) column. The device can measure a wide range of hydrogen (1–100 ppm), within 100 s, using a small volume of human breath (1 mL) without pre-concentration. Especially, the mini-GC integrated with Pd-SnO<sub>2</sub> NRs can detect 1 ppm of H<sub>2</sub>, as a lower detection limit, at a low operating temperature of 152 °C. Furthermore, when the breath hydrogen analyzer was exposed to a mixture of interfering gases, such as carbon dioxide, nitrogen, methane, and acetone, it was found to be capable of selectively detecting only H<sub>2</sub>. We found that the Pd-SnO<sub>2</sub> NRs were superior to other semiconducting metal oxides that lack selectivity in H<sub>2</sub> detection. Our study reveals that the Pd-SnO<sub>2</sub> NRs integrated into the mini-GC device can be utilized in breath hydrogen analyzers to rapidly and accurately detect hydrogen due to its high selectivity and sensitivity.https://www.mdpi.com/1424-8220/22/5/2056breath hydrogen analyzergas sensorPd-coated SnO<sub>2</sub> nanorodsgas chromatographyselectivity |
| spellingShingle | Hwaebong Jung Junho Hwang Yong-Sahm Choe Hyun-Sook Lee Wooyoung Lee Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications Sensors breath hydrogen analyzer gas sensor Pd-coated SnO<sub>2</sub> nanorods gas chromatography selectivity |
| title | Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications |
| title_full | Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications |
| title_fullStr | Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications |
| title_full_unstemmed | Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications |
| title_short | Highly Sensitive and Selective Detection of Hydrogen Using Pd-Coated SnO<sub>2</sub> Nanorod Arrays for Breath-Analyzer Applications |
| title_sort | highly sensitive and selective detection of hydrogen using pd coated sno sub 2 sub nanorod arrays for breath analyzer applications |
| topic | breath hydrogen analyzer gas sensor Pd-coated SnO<sub>2</sub> nanorods gas chromatography selectivity |
| url | https://www.mdpi.com/1424-8220/22/5/2056 |
| work_keys_str_mv | AT hwaebongjung highlysensitiveandselectivedetectionofhydrogenusingpdcoatedsnosub2subnanorodarraysforbreathanalyzerapplications AT junhohwang highlysensitiveandselectivedetectionofhydrogenusingpdcoatedsnosub2subnanorodarraysforbreathanalyzerapplications AT yongsahmchoe highlysensitiveandselectivedetectionofhydrogenusingpdcoatedsnosub2subnanorodarraysforbreathanalyzerapplications AT hyunsooklee highlysensitiveandselectivedetectionofhydrogenusingpdcoatedsnosub2subnanorodarraysforbreathanalyzerapplications AT wooyounglee highlysensitiveandselectivedetectionofhydrogenusingpdcoatedsnosub2subnanorodarraysforbreathanalyzerapplications |