Biodegradable sensor development for mercury detection in different environments

• Grant number: 24/05393-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2025
• End date: December 31, 2025
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Priscila Alessio Constantino
• Grantee: Emilly Wruck Arndt
• Host Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil
• Associated research grant: 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis, AP.TEM

Abstract

This project proposes the development of electrochemical sensors for the detection and quantification of mercury in natural environments, using modified carbon paste electrodes (CPE). The focus is on the use of biodegradable materials and carbon nanomaterials, such as graphene oxide (GO) and carbon nanotubes, to create clean and sustainable technologies. This proposal arises in response to the growing concern about mercury contamination, especially in regions affected by mining activities, but also in urban areas where mercury concentrations above the limit allowed for human consumption can be found. Electrochemical detection of mercury offers advantages in terms of sensitivity, selectivity, and cost when compared to conventional methods, such as colorimetric and luminescence analyses. The incorporation of carbon nanomaterials into CPEs aims to improve electronic transfer and interaction with mercury, enhancing the effectiveness of the sensors. Thus, the project highlights the importance of developing biodegradable sensors, which after use, can be naturally decomposed, reducing the environmental impact associated with the disposal of electronic devices. It aligns with the need to develop more sustainable and efficient environmental monitoring technologies, capable of responding quickly to contaminations, promoting public health, and preserving the environment