Trace gas VOC Detection Using Metal-organic Frameworks as Pre-concentrators and Semiconductor Gas Sensors
| Autor: | M. Leidinger, Andreas Schütze, Tilman Sauerwald, Max Rieger, D. Weishaupt, M. Nägele, Jürgen Hürttlen |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2015 |
| Předmět: |
Analytical chemistry
02 engineering and technology 010402 general chemistry Mass spectrometry 01 natural sciences benzene chemistry.chemical_compound Adsorption Desorption Phase (matter) Ceramic Benzene Engineering(all) pre-concentrator VOC detection General Medicine 021001 nanoscience & nanotechnology low concentration 0104 chemical sciences Trace gas chemistry visual_art visual_art.visual_art_medium Metal-organic framework 0210 nano-technology indoor air quality |
| Zdroj: | Procedia Engineering. 120:1042-1045 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2015.08.719 |
| Popis: | A method for the measurement of low gas concentrations is presented. The method was developed for detection of Volatile Organic Compounds (VOCs) in indoor air quality applications and tested with benzene, a carcinogenic VOC with no safe exposure limit value. Using metal organic framework materials, gas pre-concentration devices for benzene were prepared on ceramic micro hotplates and characterized. Two MOF materials (HKUST-1 and MIL-53) were tested. Both showed good pre-concentrator performance concerning adsorption and desorption of the target gas. A significant temporary decrease of the benzene concentration in the sampling phase and a corresponding increase in the desorption phase were detected using a mass spectrometer. The MOF pre-concentrators were also tested in combination with a semiconductor gas sensor resulting in a significant increase in the sensor response in the desorption phase. |
| Databáze: | OpenAIRE |
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