Enhanced catalytic performance of magnetic zinc-doped cobalt ferrite nanoparticles in sodium borohydride methanolysis

Hydrogen is widely acknowledged as a pivotal factor in the shift towards a sustainable, decarbonized economy. By leveraging its potential, we may substantially diminish carbon emissions and foster a greener future for subsequent generations. This study explores the synthesis and catalytic performance of zinc-doped cobalt ferrite (Co1-xZnxFe2O4) nanoparticles for hydrogen production via methanolysis of sodium borohydride (NaBH4). Utilizing a sol-gel combustion method, we systematically varied Zn content (x = 0.0 to 1.0). We characterized the resulting nanoparticles through various experimental techniques. Our results indicate that Co0.6Zn0.4Fe2O4 exhibits optimal catalytic activity, achieving a hydrogen production rate of 14,463 mL/g & sdot;min while maintaining a low activation energy of 16.43 kJ/mol. The doping of Zn enhances structural stability and catalytic efficiency compared to undoped CoFe2O4. Additionally, we demonstrated the importance of temperature and catalyst reusability, with Co0.6Zn0.4Fe2O4 retaining 78% of its activity after five cycles. These findings underscore the potential of Zn-doped CoFe2O4 nanoparticles as a sustainable catalyst for hydrogen generation, contributing to the advancement of clean energy technologies.