Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance
Urchin-like Cu-W18O49 and flower-like Cu-WO3 structures were successfully synthesized using a hydrothermal process followed by calcination. The synthesized products were characterized using XRD, SEM, and TEM. The results revealed that the as-prepared urchin-like and flower-like samples with monoclin...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/382087 |
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| author | Hao Zhou Dong-Yao Xu Hai-Qing Zuo Wei Liu Shuang Lin |
| author_facet | Hao Zhou Dong-Yao Xu Hai-Qing Zuo Wei Liu Shuang Lin |
| author_sort | Hao Zhou |
| collection | DOAJ |
| description | Urchin-like Cu-W18O49 and flower-like Cu-WO3 structures were successfully synthesized using a hydrothermal process followed by calcination. The synthesized products were characterized using XRD, SEM, and TEM. The results revealed that the as-prepared urchin-like and flower-like samples with monoclinic structures, which were approximately 1 μm and 1-2 μm, respectively, possessed microflower architecture assembled by the nanosheet. In addition, the gas sensing properties of monoclinic-structured Cu-WO3 to acetone were measured using a static state gas sensing test system. The sensor based on the flower-like Cu-WO3 nanostructures, which were calcined at 600°C, exhibited high sensitivity toward 10 ppm acetone at an optimum temperature of 110°C, and the maximum sensitivity reached 40, which was approximately four times higher than that of urchin-like WO3 that was annealed at 300°C. The sensitivity was improved by increasing the acetone concentration. The detection limit was as low as 1 ppm. Using linear fit, the sensor was determined to be sufficiently sensitive to detect acetone in a detection range of 1 to 10 ppm even in the presence of interfering gases, which suggests that this type of sensor has excellent selectivity and has the potential for use in acetone gas sensors in the future. |
| format | Article |
| id | doaj-art-34fe5a3584c84d2e8d37d290f6982143 |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-34fe5a3584c84d2e8d37d290f69821432025-08-20T02:24:05ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/382087382087Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing PerformanceHao Zhou0Dong-Yao Xu1Hai-Qing Zuo2Wei Liu3Shuang Lin4School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaUrchin-like Cu-W18O49 and flower-like Cu-WO3 structures were successfully synthesized using a hydrothermal process followed by calcination. The synthesized products were characterized using XRD, SEM, and TEM. The results revealed that the as-prepared urchin-like and flower-like samples with monoclinic structures, which were approximately 1 μm and 1-2 μm, respectively, possessed microflower architecture assembled by the nanosheet. In addition, the gas sensing properties of monoclinic-structured Cu-WO3 to acetone were measured using a static state gas sensing test system. The sensor based on the flower-like Cu-WO3 nanostructures, which were calcined at 600°C, exhibited high sensitivity toward 10 ppm acetone at an optimum temperature of 110°C, and the maximum sensitivity reached 40, which was approximately four times higher than that of urchin-like WO3 that was annealed at 300°C. The sensitivity was improved by increasing the acetone concentration. The detection limit was as low as 1 ppm. Using linear fit, the sensor was determined to be sufficiently sensitive to detect acetone in a detection range of 1 to 10 ppm even in the presence of interfering gases, which suggests that this type of sensor has excellent selectivity and has the potential for use in acetone gas sensors in the future.http://dx.doi.org/10.1155/2015/382087 |
| spellingShingle | Hao Zhou Dong-Yao Xu Hai-Qing Zuo Wei Liu Shuang Lin Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance Journal of Chemistry |
| title | Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance |
| title_full | Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance |
| title_fullStr | Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance |
| title_full_unstemmed | Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance |
| title_short | Preparation of Flower-Like Cu-WO3 Nanostructures and Their Acetone Gas Sensing Performance |
| title_sort | preparation of flower like cu wo3 nanostructures and their acetone gas sensing performance |
| url | http://dx.doi.org/10.1155/2015/382087 |
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