Akademik Veri Yönetim Sistemi
SUSTAINABLE ENERGY & FUELS, cilt.9, sa.20, ss.54000, 2025 (SCI-Expanded)
Solar photothermal chemical fuels collect and store solar energy through molecular structure changes and release the energy in the form of heat. Molecular software was used to construct molecular models of azobenzene and azobenzene-graphite-like phase carbon nitride (AZO-g-C3N4), and structure optimization and energy calculations were carried out on the models based on density functional theory. Azobenzene prolongs the isomerization recovery time of azobenzene by grafting g-C3N4, and its energy is increased by 0.87-1.50 eV compared with that of the pre-grafting period. Four azobenzene monomers with different structures were experimentally designed to be grafted four azobenzene monomers with different structures were experimentally designed and grafted onto g-C3N4 templates to form AZO-g-C3N4 hybrid materials. Compared with the original azobenzene, the half-life of the grafted g-C3N4 was increased from (4h, 6h, 12h, 15h) to (57h, 82h, 164h, 223h), and the thermal stability of the grafted AZO-g-C3N4 material was improved by 77%~171%, and the energy density reached 32.15 Wh/kg, 39.6 Wh/kg, 60.3 Wh/kg, 75.79 Wh/kg, with high thermal storage and release capability. The results show that azobenzene grafted g-C3N4 templates are an effective method to improve the half-life, thermal stability, and energy storage density of solar fuel recovery.