ESTEEM3 Project (H2020)
Published July 20, 2020 | Version v1
Journal article Open

Laser-Deposited Carbon Aerogel Derived from Graphene Oxide Enables NO2-Selective Parts-per-Billion Sensing

Creators

  • 1. M-Solv ltd
  • 2. University of Sussex
  • 3. University of Brighton
  • 4. University of Zaragoza
  • 5. University of Surrey
  • 6. Instituto de Carboquímica
  • 7. National Hellenic Research Foundation
  • 8. Institute of Materials Jean Rouxel
  • 9. M-Solv Ltd, Oxonian Park

Description

Laser-deposited carbon aerogel is a low-density porous network of carbon clusters synthesized using a laser process. A one-step synthesis, involving deposition and annealing, results in the formation of a thin porous conductive film which can be applied as a chemiresistor. This material is sensitive to NO2 compared to ammonia and other volatile organic compounds and is able to detect ultra-low concentrations down to at least 10 parts-per-billion. The sensing mechanism, based on the solubility of NO2 in the water layer adsorbed on the aerogel, increases the usability of the sensor in practically relevant ambient environments. A heating step, achieved in tandem with a microheater, allows the recovery to the baseline, making it operable in real world environments. This, in combination with its low cost and scalable production, makes it promising for Internet-of-Things air quality monitoring.
 

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Laser-Deposited Carbon Aerogel Derived from Graphene Oxide Enables NO2-Selective Parts-per-Billion Sensing.pdf

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Additional details

Funding

ESTEEM3 – Enabling Science and Technology through European Electron Microscopy 823717
European Commission