Improving the sensory response behavior of CO, CO2 and VOCs (Volatile Organic Compounds) sensors based on SnO2 nanowire

• Grant number: 19/18963-6
• Support Opportunities: Regular Research Grants
• Start date: January 01, 2021
• End date: December 31, 2022
• Field of knowledge: Agronomical Sciences - Forestry Resources and Forestry Engineering - Nature Conservation
• Principal Investigator: Cleber Alexandre de Amorim
• Grantee: Cleber Alexandre de Amorim
• Host Institution: Faculdade de Ciências e Engenharia. Universidade Estadual Paulista (UNESP). Campus de Tupã. Tupã , SP, Brazil
• Associated researchers: Adenilson José Chiquito ; Flávio José de Oliveira Morais
• Associated research grant(s): 24/00805-3 - 2024 MRS Spring Meeting & Exhibit, AR.EXT
• Associated scholarship(s): 22/00467-5 - Interrogation system development for monitoring gas biosensors based on tin oxide nanowires., BP.TT

Abstract

The present project aims to study processes to improve the performance of sensors for CO, CO2 and VOCs (volatile organic compounds) based on SnO2 nanowires. Currently commercial sensors either have a high added value or low sensitivity. In addition, this work has as one of its approaches the development of a device that could, in the future, serve as a sensor network for the monitoring of fire outbreaks in the region of the state of Tupã. For this, different configurations and geometries of devices will be tested: i) a single nanowire; ii) nanowire film. In both cases, metal porphyrin functionalized devices will be tested to improve sensory response and sensitivity. The electric response will be analyzed for the current-voltage and current-time characterization at room temperature and with the device under heating under different concentrations of the study gases. An important factor for the development of sensory devices is related to their sensitivity, so a study on the functionalization of nanowires will be carried out based on structural characterizations such as X-ray diffraction, Scanning Electron Microscopy (SEM), lightning spectroscopy -X by energy dispersion (EDX) and atomic force microscopy (AFM). This allows greater sensitivity/selectivity of the devices. Another important point in the project in question is the nucleation of a laboratory of study of sensors with application in diverse biosystems in the Faculty of Sciences and Engineering of the Tupã Unesp. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CAVALLARI, MARCO ROBERTO; PASTRANA, LOREN MORA; SOSA, CARLOS DANIEL FLECHA; MARQUINA, ALEJANDRA MARIA RODRIGUEZ; IZQUIERDO, JOSE ENRIQUE EIREZ; FONSECA, FERNANDO JOSEPETTI; AMORIM, CLEBER ALEXANDRE DE; PATERNO, LEONARDO GIORDANO; KYMISSIS, IOANNIS. Organic Thin-Film Transistors as Gas Sensors: A Review. MATERIALS, v. 14, n. 1, JAN 2021. (13/50440-7, 15/08566-9, 19/18963-6, 13/19420-0)

DE ARAUJO, ESTACIO P.; PAIVA, MURILO P. P.; MOISES, LUCAS A. A.; SANTO, GABRIEL S. DO ESPIRITO; BLANCO, KATE C. C.; CHIQUITO, ADENILSON J. J.; AMORIM, CLEBER A. A.. Improving Hazardous Gas Detection Behavior with Palladium Decorated SnO2 Nanobelts Networks. SENSORS, v. 23, n. 10, p. 17-pg., 2023-05-16. (19/18963-6)

DE ARAUJO, ESTACIO P.; AMORIM, CLEBER A.; ARANTES, ADRYELLE N.; CHIQUITO, ADENILSON J.. A label-free Acetone based SnO2 nanowire network sensor at room temperature. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, v. 128, n. 5, p. 8-pg., 2022-05-01. (16/14381-4, 13/07296-2, 19/18963-6)