ZnO-SnO2 heterojunction nanobelts: Synthesis and ultraviolet light irradiation to improve the triethylamine sensing properties
| Autor: | Qi Zhao, Mingzhe Zhang, Mingming Zhu, Tianye Yang, Chengbo Zhai, Kuikun Gu, Qing Lu, Xiaodong Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
02 engineering and technology 010402 general chemistry medicine.disease_cause 01 natural sciences chemistry.chemical_compound Materials Chemistry medicine Ultraviolet light Uv laser Volatile organic compound Irradiation Electrical and Electronic Engineering Instrumentation Triethylamine chemistry.chemical_classification business.industry Metals and Alloys Heterojunction 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Optoelectronics Laser illumination 0210 nano-technology business Ultraviolet |
| Zdroj: | Sensors and Actuators B: Chemical. 279:410-417 |
| ISSN: | 0925-4005 |
| Popis: | ZnO-SnO2 heterojunction nanobelts with hollow interiors are successfully designed and synthesized using a facile two-step method. The as-synthesized ZnO-SnO2 heterojunction nanobelts are used for the detection of the highly toxic and pungent volatile organic compound triethylamine (TEA). The sensing properties of the as-fabricated sensor under ultraviolet (UV) laser illumination are carefully investigated and the results exhibit fast response/recovery times, good sensitivity and superior repeatability with regard to the TEA detection. Specifically, the ZnO-SnO2 sensor exhibits a faster response speed (1.8 s) and recovery speed (18 s) under UV illumination conditions. The UV laser enhanced sensing mechanism of the heterojunction nanobelts is also discussed. |
| Databáze: | OpenAIRE |
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