Author, as appears in the article.: Thamri, Atef; Baccar, Hamdi; Casanova-Chafer, Juan; Mejri, Moataz Billeh; Llobet, Eduard; Abdelghani, Adnane;

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard

Keywords: Volatile organic-compounds Vapor Thiol-amine Sensors Sensing properties Self-assembled monolayer Metal decoration Lung-cancer Gas sensing Films Exhaled breath Electronic nose Discrimination Conductivity Carbon nanotubes Biomarkers detection

Abstract: 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.

Thematic Areas: Química Physical and theoretical chemistry Materiais Instruments & instrumentation Farmacia Electrochemistry Ciencias sociales Ciência de alimentos Chemistry, analytical Astronomia / física Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat

Author identifier: 0000-0001-6164-4342

Record's date: 2023-05-14

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2227-9040/9/5/87

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Chemosensors (Basel). 9 (5):

APA: Thamri, Atef; Baccar, Hamdi; Casanova-Chafer, Juan; Mejri, Moataz Billeh; Llobet, Eduard; Abdelghani, Adnane; (2021). Thiol-Amine Functionalized Decorated Carbon Nanotubes for Biomarker Gases Detection. Chemosensors (Basel), 9(5), -. DOI: 10.3390/chemosensors9050087

Article's DOI: 10.3390/chemosensors9050087

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications