Loading...

A selective chemiresistive sensor for the cancer-related volatile organic compound hexanal by using molecularly imprinted polymers and multiwalled carbon nanotubes

Janfaza, S ; Sharif University of Technology | 2019

1044 Viewed
  1. Type of Document: Article
  2. DOI: 10.1007/s00604-019-3241-z
  3. Publisher: Springer-Verlag Wien , 2019
  4. Abstract:
  5. A chemiresistive sensor is described for the lung cancer biomarker hexanal. A composite consisting of molecularly imprinted polymer nanoparticles and multiwalled carbon nanotubes was used in the sensor that is typically operated at a voltage of 4 V and is capable of selectively sensing gaseous hexanal at room temperature. It works in the 10 to 200 ppm concentration range and has a 10 ppm detection limit (at S/N = 3). The sensor signal recovers to a value close to its starting value without the need for heating even after exposure to relatively high levels of hexanal
  6. Keywords:
  7. Chemiresistor ; Gas sensor ; Lung cancer ; MWCNTs ; Nanocomposite ; Aldehyde ; Carbon nanotube ; Methacrylic acid ; N-hexanal ; Nanoparticle ; Poly(methyl methacrylate) ; Tumor marker ; Volatile organic compound ; Chemistry ; Electrochemical analysis ; Electrode ; Gas ; Genetic procedures ; Human ; Lung tumor ; Surface property ; Aldehydes ; Biomarkers, Tumor ; Biosensing Techniques ; Electrochemical Techniques ; Electrodes ; Gases ; Humans ; Limit of Detection ; Lung Neoplasms ; Methacrylates ; Molecular Imprinting ; Nanocomposites ; Nanoparticles ; Nanotubes, Carbon ; Particle Size ; Polymerization ; Polymethyl Methacrylate ; Surface Properties ; Temperature ; Volatile Organic Compounds
  8. Source: Microchimica Acta ; Volume 186, Issue 3 , 2019 ; 00263672 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s00604-019-3241-z