Controllable synthesis of Ag-WO3 core-shell nanospheres for light-enhanced gas sensors

Yao Yao; Mingli Yin; Junqing Yan; Dong Yang; Shengzhong (Frank) Liu

doi:10.1016/j.snb.2017.05.007

Controllable synthesis of Ag-WO₃ core-shell nanospheres for light-enhanced gas sensors

Yao Yao, Mingli Yin, Junqing Yan, Dong Yang, Shengzhong (Frank) Liu

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Ag-WO₃ core-shell nanospheres (CSNSs) are fabricated for gas sensor applications. It is found that the sensor based on Ag-WO₃ CSNSs dramatically improve the sensor performance towards alcohol vapor, with significantly lower optimum working temperature (260 °C) and superior detection limit (0.20 ppm) comparing to pure WO₃ hollow nanospheres (HNSs). The Ag-WO₃ sensor displays an ultrahigh sensitivity under visible light illumination. When illuminated under a 150 W xenon arc light source, the response is increased from 62 to 160, the optimum working temperature is reduced from 260 to 190 °C, and the detection limit is improved from 0.20 to 0.032 ppm. This work may offer an attractive strategy to improve sensitivity of light-enhanced plasmonic metal-oxide based gas sensors.

Original language	English (US)
Pages (from-to)	583-589
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	251
DOIs	https://doi.org/10.1016/j.snb.2017.05.007
State	Published - 2017

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.snb.2017.05.007

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title = "Controllable synthesis of Ag-WO3 core-shell nanospheres for light-enhanced gas sensors",

abstract = "Ag-WO3 core-shell nanospheres (CSNSs) are fabricated for gas sensor applications. It is found that the sensor based on Ag-WO3 CSNSs dramatically improve the sensor performance towards alcohol vapor, with significantly lower optimum working temperature (260 °C) and superior detection limit (0.20 ppm) comparing to pure WO3 hollow nanospheres (HNSs). The Ag-WO3 sensor displays an ultrahigh sensitivity under visible light illumination. When illuminated under a 150 W xenon arc light source, the response is increased from 62 to 160, the optimum working temperature is reduced from 260 to 190 °C, and the detection limit is improved from 0.20 to 0.032 ppm. This work may offer an attractive strategy to improve sensitivity of light-enhanced plasmonic metal-oxide based gas sensors.",

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year = "2017",

doi = "10.1016/j.snb.2017.05.007",

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pages = "583--589",

journal = "Sensors and Actuators, B: Chemical",

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T1 - Controllable synthesis of Ag-WO3 core-shell nanospheres for light-enhanced gas sensors

AU - Yao, Yao

AU - Yin, Mingli

AU - Yan, Junqing

AU - Yang, Dong

AU - Liu, Shengzhong (Frank)

PY - 2017

Y1 - 2017

N2 - Ag-WO3 core-shell nanospheres (CSNSs) are fabricated for gas sensor applications. It is found that the sensor based on Ag-WO3 CSNSs dramatically improve the sensor performance towards alcohol vapor, with significantly lower optimum working temperature (260 °C) and superior detection limit (0.20 ppm) comparing to pure WO3 hollow nanospheres (HNSs). The Ag-WO3 sensor displays an ultrahigh sensitivity under visible light illumination. When illuminated under a 150 W xenon arc light source, the response is increased from 62 to 160, the optimum working temperature is reduced from 260 to 190 °C, and the detection limit is improved from 0.20 to 0.032 ppm. This work may offer an attractive strategy to improve sensitivity of light-enhanced plasmonic metal-oxide based gas sensors.

AB - Ag-WO3 core-shell nanospheres (CSNSs) are fabricated for gas sensor applications. It is found that the sensor based on Ag-WO3 CSNSs dramatically improve the sensor performance towards alcohol vapor, with significantly lower optimum working temperature (260 °C) and superior detection limit (0.20 ppm) comparing to pure WO3 hollow nanospheres (HNSs). The Ag-WO3 sensor displays an ultrahigh sensitivity under visible light illumination. When illuminated under a 150 W xenon arc light source, the response is increased from 62 to 160, the optimum working temperature is reduced from 260 to 190 °C, and the detection limit is improved from 0.20 to 0.032 ppm. This work may offer an attractive strategy to improve sensitivity of light-enhanced plasmonic metal-oxide based gas sensors.

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JO - Sensors and Actuators, B: Chemical

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Controllable synthesis of Ag-WO₃ core-shell nanospheres for light-enhanced gas sensors

Abstract

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