Thiol-Amine Functionalized Decorated Carbon Nanotubes for Biomarker Gases Detection
Atef Thamri,
Hamdi Baccar,
Juan Casanova-Chafer,
Moataz Billeh Mejri,
Eduard Llobet,
Adnane Abdelghani
Affiliations
Atef Thamri
Research Unit of Nanobiotechnology and Valorisation of Medicinal Phytoressources UR17ES22, National Institute of Applied Science and Technology, University of Carthage, Centre Urbain Nord, Charguia 1080, CEDEX Bp 676, Tunisia
Hamdi Baccar
Research Unit of Nanobiotechnology and Valorisation of Medicinal Phytoressources UR17ES22, National Institute of Applied Science and Technology, University of Carthage, Centre Urbain Nord, Charguia 1080, CEDEX Bp 676, Tunisia
Juan Casanova-Chafer
Department of Electronics Engineering, Universitat Rovira i Virgili, MINOS, 43007 Tarragona, Spain
Moataz Billeh Mejri
Research Unit of Nanobiotechnology and Valorisation of Medicinal Phytoressources UR17ES22, National Institute of Applied Science and Technology, University of Carthage, Centre Urbain Nord, Charguia 1080, CEDEX Bp 676, Tunisia
Eduard Llobet
Department of Electronics Engineering, Universitat Rovira i Virgili, MINOS, 43007 Tarragona, Spain
Adnane Abdelghani
Research Unit of Nanobiotechnology and Valorisation of Medicinal Phytoressources UR17ES22, National Institute of Applied Science and Technology, University of Carthage, Centre Urbain Nord, Charguia 1080, CEDEX Bp 676, Tunisia
Thousands of gas molecules are expelled in exhaled breath, and some of them can reveal diseases and metabolomic disorders. For that reason, the development of fast, inexpensive, and reliable sensing devices has been attracting growing interest. Here, we present the development of different chemoresistors based on multi-walled carbon nanotubes (MWCNTs) decorated with platinum (MWCNT/Pt) and palladium (MWCNT/Pt) nanoparticles and also functionalized with a self-assembled monolayer (SAM) of 11-amino-1-undecanethiol (Thiol-amine). The nanocomposites developed are a proof-of-concept to detect some biomarker molecules. Specifically, the capability to identify and measure different concentrations of volatile organic compounds (VOCs), either aromatic (toluene and benzene) and non-aromatic (ethanol and methanol) was assessed. As a result, this paper reports the significant differences in sensing performance achieved according to the metal nanoparticle used, and the high sensitivity obtained when SAMs are grown on the sensitive film, acting as a receptor for biomarker vapours.
