Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature
This paper is focused on the template-free synthesis of nanosized ferric oxide (nano-Fe2O3) and its application in quartz crystal microbalance (QCM) resonators to detect dimethyl methylphosphonate (DMMP), a simulant of Sarin. The X-ray diffraction (XRD) patterns confirm that the synthesized samples...
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| Format: | Article |
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MDPI AG
2012-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/12/4/4594/ |
| _version_ | 1798005031058800640 |
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| author | Guang Li Zhiyuan Luo Meng Hu Guokang Fan You Wang Kaihuan Zhang |
| author_facet | Guang Li Zhiyuan Luo Meng Hu Guokang Fan You Wang Kaihuan Zhang |
| author_sort | Guang Li |
| collection | DOAJ |
| description | This paper is focused on the template-free synthesis of nanosized ferric oxide (nano-Fe2O3) and its application in quartz crystal microbalance (QCM) resonators to detect dimethyl methylphosphonate (DMMP), a simulant of Sarin. The X-ray diffraction (XRD) patterns confirm that the synthesized samples are made of Fe2O3 and the scanning electron microscopy (SEM) pictures show that the samples have ball-like shapes. The DMMP sensors with a sensing film of hollow ball-like and solid ball-like Fe2O3 are fabricated and their sensing characteristics are compared. The sensitivity of the hollow ball-like Fe2O3 sensor is more than 500% higher than the one of the solid ball-like Fe2O3 sensor. The hollow ball-like nano-Fe2O3 can be synthesized by a novel low temperature hydrothermal method. The sensors with the hollow ball-like Fe2O3 film perform well in a range of 1 to 6 ppm, with a sensitivity of 29 Hz/ppm at room temperature, while the appropriate recoverability and selectivity are maintained. In addition, the performance of different thicknesses of the sensing film of the hollow ball-like nano-Fe2O3 is investigated and the optimized relative film thickness of the hollow ball-like nano-Fe2O3 is found to be 20 μg/mm2. |
| first_indexed | 2024-04-11T12:33:55Z |
| format | Article |
| id | doaj.art-dcf38a5016a64dbe88bf099185aebff6 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:33:55Z |
| publishDate | 2012-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-dcf38a5016a64dbe88bf099185aebff62022-12-22T04:23:41ZengMDPI AGSensors1424-82202012-04-011244594460410.3390/s120404594Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room TemperatureGuang LiZhiyuan LuoMeng HuGuokang FanYou WangKaihuan ZhangThis paper is focused on the template-free synthesis of nanosized ferric oxide (nano-Fe2O3) and its application in quartz crystal microbalance (QCM) resonators to detect dimethyl methylphosphonate (DMMP), a simulant of Sarin. The X-ray diffraction (XRD) patterns confirm that the synthesized samples are made of Fe2O3 and the scanning electron microscopy (SEM) pictures show that the samples have ball-like shapes. The DMMP sensors with a sensing film of hollow ball-like and solid ball-like Fe2O3 are fabricated and their sensing characteristics are compared. The sensitivity of the hollow ball-like Fe2O3 sensor is more than 500% higher than the one of the solid ball-like Fe2O3 sensor. The hollow ball-like nano-Fe2O3 can be synthesized by a novel low temperature hydrothermal method. The sensors with the hollow ball-like Fe2O3 film perform well in a range of 1 to 6 ppm, with a sensitivity of 29 Hz/ppm at room temperature, while the appropriate recoverability and selectivity are maintained. In addition, the performance of different thicknesses of the sensing film of the hollow ball-like nano-Fe2O3 is investigated and the optimized relative film thickness of the hollow ball-like nano-Fe2O3 is found to be 20 μg/mm2.http://www.mdpi.com/1424-8220/12/4/4594/nano-Fe2O3quartz crystal microbalance (QCM)dimethyl methylphosphonate (DMMP)gas sensor |
| spellingShingle | Guang Li Zhiyuan Luo Meng Hu Guokang Fan You Wang Kaihuan Zhang Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature Sensors nano-Fe2O3 quartz crystal microbalance (QCM) dimethyl methylphosphonate (DMMP) gas sensor |
| title | Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature |
| title_full | Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature |
| title_fullStr | Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature |
| title_full_unstemmed | Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature |
| title_short | Template Free Synthesis of Hollow Ball-Like Nano-Fe2O3 and Its Application to the Detection of Dimethyl Methylphosphonate at Room Temperature |
| title_sort | template free synthesis of hollow ball like nano fe2o3 and its application to the detection of dimethyl methylphosphonate at room temperature |
| topic | nano-Fe2O3 quartz crystal microbalance (QCM) dimethyl methylphosphonate (DMMP) gas sensor |
| url | http://www.mdpi.com/1424-8220/12/4/4594/ |
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