bachelorThesis
A quartz crystal microbalance electrochemical sensor-based contamination detection system
Fecha
2021-11-05Registro en:
GONDO, Gustavo Akira. A quartz crystal microbalance electrochemical sensor-based contamination detection system. 2021. Trabalho de Conclusão de Curso (Bacharelado em Engenharia da Computação) - Universidade Tecnológica Federal do Paraná, Curitiba, 2021.
Autor
Gondo, Gustavo Akira
Resumen
Like many technological inventions of its kind, Quartz Crystal Microbalances (QCMs) have been applied to various different fields, from explosive detections to alcohol vapors classification. One field it has seldom seen use is in the detection of contaminants in aqueous environments, and in addition, few fully-formed contamination detection systems have been fully developed for the QCM platform. Therefore, this work aims to develop a novel aqueous ammonia detection system along with a complete set of auxiliary systems for its operation, such as a graphical user interface and email notifications. The sensor film that coated the QCM as polyaniline(PANI)/Reduced Graphene Oxide(rGO) composite, when testing with the QCM system, achieved a range of 1mg/L to 100mg/L with an R 2 value of 0.9633, with a response time ranging from 290s to 25s, being comparable in response time and sensitivity to other sensors. Paving the way for a novel class of usages of electrochemical sensors and resonant piezoelectric crystals.