The article discusses a study supported by FAPESP in Brazil that focuses on the development of films comprising polyaniline nanostructures with multi-walled carbon nanotube underlayers for efficient photoelectrocatalysis, particularly in hydrogen production through solar-driven water splitting. This initiative aims to contribute to the green hydrogen sector, which is gaining traction for its potential as a sustainable energy source. Polyaniline, despite being an organic semiconductor known for over 150 years, has recently garnered scientific interest due to its remarkable electrical conductivity. The research, conducted in collaboration with the Center for Development of Functional Materials (CDMF) and the Center for Innovation in New Energies (CINE), aims to enhance the photoelectrochemical performance of the material, crucial for achieving efficient hydrogen production. By combining the unique properties of polyaniline with the advantages of carbon nanotubes, the study seeks to address key requirements like stability and light absorption necessary for successful hydrogen generation. Overall, the development of this innovative material represents a significant step towards sustainable hydrogen production and showcases the potential of academic-industry collaborations in advancing renewable energy technologies.