Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles
Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution syst...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Chao, Junfeng [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery - Borgès Da Silva, Virginie ELSEVIER, 2018, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:347 ; year:2021 ; day:15 ; month:11 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.snb.2021.130621 |
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ELV055451446 |
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| 520 | |a Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. | ||
| 520 | |a Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. | ||
| 650 | 7 | |a Tungsten oxide |2 Elsevier | |
| 650 | 7 | |a Gas sensors |2 Elsevier | |
| 650 | 7 | |a Square-like structure |2 Elsevier | |
| 650 | 7 | |a Gas sensing mechanism |2 Elsevier | |
| 700 | 1 | |a Liu, Zhendong |4 oth | |
| 700 | 1 | |a Xing, Shumin |4 oth | |
| 700 | 1 | |a Gao, Qianqian |4 oth | |
| 700 | 1 | |a Zhao, Jianzhou |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Borgès Da Silva, Virginie ELSEVIER |t Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery |d 2018 |g Amsterdam [u.a.] |w (DE-627)ELV001079875 |
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10.1016/j.snb.2021.130621 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001570.pica (DE-627)ELV055451446 (ELSEVIER)S0925-4005(21)01189-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.91 bkl Chao, Junfeng verfasserin aut Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Tungsten oxide Elsevier Gas sensors Elsevier Square-like structure Elsevier Gas sensing mechanism Elsevier Liu, Zhendong oth Xing, Shumin oth Gao, Qianqian oth Zhao, Jianzhou oth Enthalten in Elsevier Science Borgès Da Silva, Virginie ELSEVIER Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery 2018 Amsterdam [u.a.] (DE-627)ELV001079875 volume:347 year:2021 day:15 month:11 pages:0 https://doi.org/10.1016/j.snb.2021.130621 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.91 Psychiatrie Psychopathologie VZ AR 347 2021 15 1115 0 |
| spelling |
10.1016/j.snb.2021.130621 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001570.pica (DE-627)ELV055451446 (ELSEVIER)S0925-4005(21)01189-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.91 bkl Chao, Junfeng verfasserin aut Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Tungsten oxide Elsevier Gas sensors Elsevier Square-like structure Elsevier Gas sensing mechanism Elsevier Liu, Zhendong oth Xing, Shumin oth Gao, Qianqian oth Zhao, Jianzhou oth Enthalten in Elsevier Science Borgès Da Silva, Virginie ELSEVIER Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery 2018 Amsterdam [u.a.] (DE-627)ELV001079875 volume:347 year:2021 day:15 month:11 pages:0 https://doi.org/10.1016/j.snb.2021.130621 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.91 Psychiatrie Psychopathologie VZ AR 347 2021 15 1115 0 |
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10.1016/j.snb.2021.130621 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001570.pica (DE-627)ELV055451446 (ELSEVIER)S0925-4005(21)01189-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.91 bkl Chao, Junfeng verfasserin aut Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Tungsten oxide Elsevier Gas sensors Elsevier Square-like structure Elsevier Gas sensing mechanism Elsevier Liu, Zhendong oth Xing, Shumin oth Gao, Qianqian oth Zhao, Jianzhou oth Enthalten in Elsevier Science Borgès Da Silva, Virginie ELSEVIER Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery 2018 Amsterdam [u.a.] (DE-627)ELV001079875 volume:347 year:2021 day:15 month:11 pages:0 https://doi.org/10.1016/j.snb.2021.130621 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.91 Psychiatrie Psychopathologie VZ AR 347 2021 15 1115 0 |
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10.1016/j.snb.2021.130621 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001570.pica (DE-627)ELV055451446 (ELSEVIER)S0925-4005(21)01189-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.91 bkl Chao, Junfeng verfasserin aut Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Tungsten oxide Elsevier Gas sensors Elsevier Square-like structure Elsevier Gas sensing mechanism Elsevier Liu, Zhendong oth Xing, Shumin oth Gao, Qianqian oth Zhao, Jianzhou oth Enthalten in Elsevier Science Borgès Da Silva, Virginie ELSEVIER Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery 2018 Amsterdam [u.a.] (DE-627)ELV001079875 volume:347 year:2021 day:15 month:11 pages:0 https://doi.org/10.1016/j.snb.2021.130621 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.91 Psychiatrie Psychopathologie VZ AR 347 2021 15 1115 0 |
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10.1016/j.snb.2021.130621 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001570.pica (DE-627)ELV055451446 (ELSEVIER)S0925-4005(21)01189-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.91 bkl Chao, Junfeng verfasserin aut Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. Tungsten oxide Elsevier Gas sensors Elsevier Square-like structure Elsevier Gas sensing mechanism Elsevier Liu, Zhendong oth Xing, Shumin oth Gao, Qianqian oth Zhao, Jianzhou oth Enthalten in Elsevier Science Borgès Da Silva, Virginie ELSEVIER Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery 2018 Amsterdam [u.a.] (DE-627)ELV001079875 volume:347 year:2021 day:15 month:11 pages:0 https://doi.org/10.1016/j.snb.2021.130621 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.91 Psychiatrie Psychopathologie VZ AR 347 2021 15 1115 0 |
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Enthalten in Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery Amsterdam [u.a.] volume:347 year:2021 day:15 month:11 pages:0 |
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Association between binge eating disorder and psychiatric comorbidity profiles in patients with obesity seeking bariatric surgery |
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It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. 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Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. 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enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by pt nanoparticles |
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Enhanced ammonia detection of gas sensors based on square-like tungsten oxide loaded by Pt nanoparticles |
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Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. |
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Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. |
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Square-like tungsten oxide submicron materials were successfully synthesized via a simple hydrothermal route. It is found that the morphology, size and crystal structure of the products can be conveniently controlled by simply adjusting the reaction time and reaction temperature in the solution system. When used as the gas-sensing materials, the tungsten trioxide sensors show excellent responses to ammonia. Pt-loaded square-like WO3 can significantly improve the responses, and we also found that the Pt mass contents were configured to 1 wt% can realize the tallest response among the square-like WO3 and Pt-loaded WO3 for ammonia and other organic vapors. The experimental results indicate that a high sensing response of 100.09 is measured under 1000 ppm NH3/air gas at 270 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 1.12 is acquired from this device. Moreover, responses with change in relative humidity from 10% to 90% were also investigated. Long-term stability test exhibits the gas sensor have good stability. The mechanism of enhanced sensor performance is also discussed. In addition, the gas sensor device demonstrated in this study has advantages including a relatively easy fabrication process, a simple structure, low cost, and a wide concentration detection range. |
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