Development of nanocomposites consisting of ZIF-8 and graphene oxide reduced derived from agricultural residues for storage applications electrochemical hydrogen.

• Grant number: 24/14409-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2024
• End date: September 30, 2025
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Leonardo Lataro Paim
• Grantee: Maicon Luiz da Silva Cunha
• Host Institution: Faculdade de Engenharia e Ciências (FEC). Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil

Abstract

The production and use of fossil fuels has significant environmental impacts, leading to the searchby renewable and less polluting alternatives, such as hydrogen, which has high thermal energyand does not generate polluting gases. The project described focuses on the development of nanocomposites ofZIF-8 and reduced graphene oxide, obtained from agricultural waste, aimed at storageelectrochemical hydrogen, addressing the existing difficulty in both the generation andstorage of this clean fuel. Carbon nanotubes are cylindrical and hollow in shapewhich provide more active surface and space for hydrogen adsorption, in addition to having goodconductivity which is necessary in electrochemical measurement. MOFs (Metal-Organic Frameworks) andZIFs (Zeolitic Imidazol Frameworks) are other nanomaterials with interesting properties forthe electrochemical storage of hydrogen. Among graphene-type materials, graphene oxidereduced (rGO) has attracted the attention of the scientific community as a promising candidate forelectronic and power devices. Nanocomposites from agricultural waste will besynthesized in a muffle furnace and ZIF-8 will be synthesized through electrolysis. Nanocomposites will becharacterized by SEM-FEG, EDS, FT-IR, RAMAN and IES. and evaluated regarding the performance of theelectrochemical storage of hydrogen using cyclic voltammetry techniques,charge/discharge and electrochemical impedance. In this way, it will be possible to determine the capacitancespecific (Fg-1) and the specific hydrogen discharge capacity (mAh g-1).