Gas sensing behavior of polyvinylpyrrolidone-modified ZnO nanoparticles for trimethylamine
| Autor: | Xingfa Ma, Mi Yan, Mang Wang, Huixiang Tang, Deren Yang, Hui Zhang |
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| Rok vydání: | 2006 |
| Předmět: |
Molar
Materials science Morphology (linguistics) Polyvinylpyrrolidone Metals and Alloys Analytical chemistry Trimethylamine Nanoparticle Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry Zno nanoparticles Chemical engineering law Materials Chemistry medicine Electrical and Electronic Engineering Electron microscope Selectivity Instrumentation medicine.drug |
| Zdroj: | Sensors and Actuators B: Chemical. 113:324-328 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2005.03.024 |
| Popis: | Gas sensors based on polyvinylpyrrolidone (PVP)-modified ZnO nanoparticles with different molar ratios of Zn2+: PVP were prepared by a sol–gel method. Morphology of the sensors was characterized by field emission-scanning electron microscopy (FE-SEM), which indicated that the sensor with a molar ratio of Zn2+: PVP = 5:5 showed uniform morphology. Moreover, the sensor exhibited fairly excellent sensitivity and selectivity to trimethylamine (TMA). The response and recovery time of the sensor were 10 and 150 s, respectively. Finally, the mechanism for the improvement in the gas sensing properties was discussed. |
| Databáze: | OpenAIRE |
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