Detection of Ultralow Concentration NO2 in Complex Environment Using Epitaxial Graphene Sensors
| Autor: | Rositsa Yakimova, Kieran Edmonds, Arseniy Lartsev, Vishal Panchal, Christos Melios, Olga Kazakova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics - Instrumentation and Detectors
Materials science FOS: Physical sciences Bioengineering Environmental pollution 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Environmental monitoring Instrumentation Annan kemiteknik Fluid Flow and Transfer Processes Other Chemical Engineering Concentration Response business.industry Graphene epitaxial graphene nitrogen dioxide graphene sensors environmental monitoring air quality Hall effect Process Chemistry and Technology Instrumentation and Detectors (physics.ins-det) Contamination 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry 13. Climate action Optoelectronics 0210 nano-technology business Bilayer graphene Water vapor Carbon monoxide |
| Zdroj: | ACS Sensors |
| Popis: | We demonstrate proof-of-concept graphene sensors for environmental monitoring of ultra-low concentration NO2 in complex environments. Robust detection in a wide range of NO2 concentrations, 10-154 ppb, was achieved, highlighting the great potential for graphene-based NO2 sensors, with applications in environmental pollution monitoring, portable monitors, automotive and mobile sensors for a global real-time monitoring network. The measurements were performed in a complex environment, combining NO2/synthetic air/water vapour, traces of other contaminants and variable temperature in an attempt to fully replicate the environmental conditions of a working sensor. It is shown that the performance of the graphene-based sensor can be affected by co-adsorption of NO2 and water on the surface at low temperatures ( 18 pages |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|