Autor segons l'article: Santos-Ceballos JC; Salehnia F; Romero A; Vilanova X; Llobet E
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Romero Nevado, Alfonso José
Paraules clau: Polypyrrole Laser-induced graphene Gas sensing Chronoamperometry Ammonia sensor
Resum: The electrochemical synthesis of polypyrrole (PPy) on laser-induced graphene (LIG) electrodes is investigated in this study, along with the gas sensing applications of these modified laser-tailored materials. A simple and scalable method for the low-cost, large-scale production of polypyrrole LIG nanocomposites (PPy@LIG NCs) is proposed. This nanocomposite is subsequently applied to design chemo-resistive flexible gas sensors to detect ammonia (NH3) levels at room temperature. Following a brief gas exposure, PPy@LIG NCs sensors demonstrate changes in resistance with a sensitivity 14 times higher than that of pure LIG. Moreover, excellent repeatability in results and a low detection limit of 1 ppm were achieved. The LIG formation and electrochemical synthesis of PPy were confirmed through Raman spectroscopy and FTIR spectroscopy. The analysis by FE-SEM and TEM verified the formation of PPy@LIG NCs. In conclusion, this work introduces the novel PPy@LIG nanocomposites and its application in gas sensing, showcasing their unique selectivity, enhanced sensitivity, and cost-effective production. These attributes mark a significant step forward, presenting new possibilities for the development of advanced gas-sensing systems aimed at improving air quality monitoring.
Àrees temàtiques: Química Physics, applied Nutrição Medicina veterinaria Medicina ii Materiais Matemática / probabilidade e estatística Interdisciplinar Instruments & instrumentation Instrumentation Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrical and electronic engineering Ciências biológicas ii Ciências biológicas i Ciência da computação Biotecnología Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: alfonsojose.romero@urv.cat
Identificador de l'autor: 0000-0003-3502-0813
Data d'alta del registre: 2024-03-23
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://ieeexplore.ieee.org/document/10453381
Referència a l'article segons font original: Ieee Sensors Journal.
Referència de l'ítem segons les normes APA: Santos-Ceballos JC; Salehnia F; Romero A; Vilanova X; Llobet E (2024). Low Cost, Flexible, Room Temperature Gas Sensor: Polypyrrole-Modified Laser-Induced Graphene for Ammonia Detection. Ieee Sensors Journal, (), -. DOI: 10.1109/JSEN.2024.3368658
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
DOI de l'article: 10.1109/JSEN.2024.3368658
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2024
Tipus de publicació: Journal Publications