Development of nanostructured sensors based on ceramic materials and conducting polymers aiming the monitoring of volatile organic compounds

• Grant number: 18/08012-1
• Support Opportunities: Scholarships in Brazil - Master
• Start date: November 01, 2018
• End date: March 31, 2020
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Daniel Souza Corrêa
• Grantee: Patrick Pires Conti
• Host Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil
• Associated scholarship(s): 19/10885-6 - Development of flexible platforms for chemical sensors based on TiO2 nanoparticles and nanofibers, BE.EP.MS

Abstract

The continued population growth and the expansion of industrial activities have been accompanied by a variety of serious environmental problems, including the release of various pollutant gases into the atmosphere. Such gases can be highly hazardous for human health and are usually harmful to the environment. Therefore, the development of novel sensitive detection techniques capable of monitoring these analytes using faster, simpler and less expensive detection methods are highly pursued. In this scenario, chemical sensors have been reported as an efficient strategy for the detection of gases with outstanding performance. Hybrid nanostructures based on ceramic and polymer nanomaterials have been extensively applied for the development of chemical sensors due to their interesting electrical and optical properties and the synergistic effect between the constituent phases. In this regard, this project aims to develop hybrid platforms based on ceramic nanomaterials (0D and 1D) and conductive polymers. The ceramic phase will be obtained by different routes, aiming to obtain nanomaterials with different dimensionalities/morphologies. The obtained composite nanomaterials will be characterized by physical chemical and electrical techniques and will be further used for the monitoring of volatile organic compounds (VOCs). Parameters such as limit of detection, response time and selectivity will be evaluated by comparing the different hybrid nanostructures. The sensing mechanisms will be also investigated to illustrate the sensing performance using the ceramic/polymeric composites.

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)

CONTI, PATRICK P.; ANDRE, RAFAELA S.; MERCANTE, LUIZA A.; FUGIKAWA-SANTOS, LUCAS; CORREA, DANIEL S.. Discriminative detection of volatile organic compounds using an electronic nose based on TiO(2 )hybrid nanostructures. SENSORS AND ACTUATORS B-CHEMICAL, v. 344, OCT 1 2021. (18/08012-1, 17/12174-4, 16/23793-4)

CONTI, PATRICK P.; DOS SANTOS, DANILO M.; GOLDTHORPE, IRENE A.; CORREA, DANIEL S.. TiO2 Hollow Nanofiber/Polyaniline Nanocomposites for Ammonia Detection at Room Temperature. HEMNANOMA, v. 8, n. 8, p. 8-pg., 2022-07-06. (19/10885-6, 18/22214-6, 18/08012-1, 17/12174-4)