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Development of flexible platforms for chemical sensors based on TiO2 nanoparticles and nanofibers

Grant number: 19/10885-6
Support type:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): August 01, 2019
Effective date (End): October 15, 2019
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Daniel Souza Corrêa
Grantee:Patrick Pires Conti
Supervisor abroad: Irene Goldthorpe
Home Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil
Research place: University of Waterloo, Canada  
Associated to the scholarship:18/08012-1 - Development of nanostructured sensors based on ceramic materials and conducting polymers aiming the monitoring of volatile organic compounds, BP.MS

Abstract

Volatile Organic Compounds (VOCs) can cause several environmental and human health risks. In this context, chemical sensors have been proposed as a suitable alternative to monitor VOCs, due to sensitivity, selectivity and portability characteristics. The use of flexible electrodes as substrates for chemical sensors based on composites (conductive/ceramic polymers) provides additional advantages to these types of devices, allowing the manufacture of lower cost sensors operating at room temperature. This project aims at the development of sensors based on flexible substrates, produced with different materials, modified by ceramic nanomaterials (0D and 1D) and conductive polymers. The 1D ceramic nanomaterial will be obtained through the electrospinning process and the 0D through chemical synthesis route. To analyze the performance of nanocomposites on flexible platforms, different solution deposition techniques will be tested. After preparing the platforms, they will be characterized by physical-chemical, morphological and electrical methods. Parameters such as limit of detection, selectivity and sensitivity will be investigated towards volatile organic compounds. (AU)

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