A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure
In view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/4/1150 |
| id |
doaj-77a3a6250a124683ac3d64b1474d7651 |
|---|---|
| record_format |
Article |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Wenjing Quan Xuefeng Hu Xinjie Min Junwen Qiu Renbing Tian Peng Ji Weiwei Qin Haixin Wang Ting Pan Suishi Cheng Xiaoqiang Chen Wei Zhang Xiaoru Wang Hua Zheng |
| spellingShingle |
Wenjing Quan Xuefeng Hu Xinjie Min Junwen Qiu Renbing Tian Peng Ji Weiwei Qin Haixin Wang Ting Pan Suishi Cheng Xiaoqiang Chen Wei Zhang Xiaoru Wang Hua Zheng A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure Sensors ppb-level acetone sensor hierarchical flower-like sno<sub>2</sub> structure precious pt-doped porous structure diabetes diagnosis |
| author_facet |
Wenjing Quan Xuefeng Hu Xinjie Min Junwen Qiu Renbing Tian Peng Ji Weiwei Qin Haixin Wang Ting Pan Suishi Cheng Xiaoqiang Chen Wei Zhang Xiaoru Wang Hua Zheng |
| author_sort |
Wenjing Quan |
| title |
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure |
| title_short |
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure |
| title_full |
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure |
| title_fullStr |
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure |
| title_full_unstemmed |
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical Structure |
| title_sort |
highly sensitive and selective ppb-level acetone sensor based on a pt-doped 3d porous sno<sub>2</sub> hierarchical structure |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2020-02-01 |
| description |
In view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing gas diffusion. A hierarchical flower-like Pt-doped (1 wt %) 3D porous SnO<sub>2</sub> (3DPS) material was synthesized by a one-step hydrothermal method. The micropores of the material were constructed by subsequent annealing. The results of the experiments show that the 3DPS-based sensor's response is strongly dependent on temperature, exhibiting a mountain-like response curve. The maximum sensor sensitivity (R<sub>a</sub>/R<sub>g</sub>) was found to be as high as 505.7 at a heating temperature of 153 °C and with an exposure to 100 ppm acetone. Additionally, at 153 °C, the sensor still had a response of 2.1 when exposed to 50 ppb acetone gas. The 3DPS-based sensor also has an excellent selectivity for acetone detection. The high sensitivity can be explained by the increase in the specific surface area brought about by the hierarchical flower-like structure, the enhanced surface activity of the noble metal nanoparticles, and the rapid diffusion of free-gas and adsorbed gas molecules caused by the multiple channels of the microporous structure. |
| topic |
ppb-level acetone sensor hierarchical flower-like sno<sub>2</sub> structure precious pt-doped porous structure diabetes diagnosis |
| url |
https://www.mdpi.com/1424-8220/20/4/1150 |
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doaj-77a3a6250a124683ac3d64b1474d76512020-11-25T01:38:34ZengMDPI AGSensors1424-82202020-02-01204115010.3390/s20041150s20041150A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO<sub>2</sub> Hierarchical StructureWenjing Quan0Xuefeng Hu1Xinjie Min2Junwen Qiu3Renbing Tian4Peng Ji5Weiwei Qin6Haixin Wang7Ting Pan8Suishi Cheng9Xiaoqiang Chen10Wei Zhang11Xiaoru Wang12Hua Zheng13State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Research Center for Sensor Science and Technology and Special Display and Imaging Technology Innovation Center of Anhui Province, Hefei University of Technology, No. 193 Tunxi Road, Hefei 230009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaSchool of Electrical Engineering & Intelligentization, Dongguan University of Technology, No.1 Daxue Rd, Dongguan 523808, ChinaSchool of Electrical Engineering & Intelligentization, Dongguan University of Technology, No.1 Daxue Rd, Dongguan 523808, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Research Center for Sensor Science and Technology and Special Display and Imaging Technology Innovation Center of Anhui Province, Hefei University of Technology, No. 193 Tunxi Road, Hefei 230009, ChinaAnhui 6D Sensing Technology Co., Ltd., Yingtian Industrial Park, Fuyang City 236000, ChinaSchool of Electrical Engineering & Intelligentization, Dongguan University of Technology, No.1 Daxue Rd, Dongguan 523808, ChinaIn view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing gas diffusion. A hierarchical flower-like Pt-doped (1 wt %) 3D porous SnO<sub>2</sub> (3DPS) material was synthesized by a one-step hydrothermal method. The micropores of the material were constructed by subsequent annealing. The results of the experiments show that the 3DPS-based sensor's response is strongly dependent on temperature, exhibiting a mountain-like response curve. The maximum sensor sensitivity (R<sub>a</sub>/R<sub>g</sub>) was found to be as high as 505.7 at a heating temperature of 153 °C and with an exposure to 100 ppm acetone. Additionally, at 153 °C, the sensor still had a response of 2.1 when exposed to 50 ppb acetone gas. The 3DPS-based sensor also has an excellent selectivity for acetone detection. The high sensitivity can be explained by the increase in the specific surface area brought about by the hierarchical flower-like structure, the enhanced surface activity of the noble metal nanoparticles, and the rapid diffusion of free-gas and adsorbed gas molecules caused by the multiple channels of the microporous structure.https://www.mdpi.com/1424-8220/20/4/1150ppb-level acetone sensorhierarchical flower-like sno<sub>2</sub> structureprecious pt-doped porous structurediabetes diagnosis |