Fabrication, characterization of n-nonadecane-graphene-SiO2 nanocomposite

Phase change materials (PCMs) are characterized by storing a large amount of thermal energy while changing from one phase to another phase at a certain temperature. The application of PCMs devote to elevate the global efforts to conserve energy with regard to fast depleting fossil fuels. The utilization of supporting materials andtechniques are approaches to alleviate leakage, phase separation and volume change problems of PCM. In this work, a shape-stabilised n-nonadecane-graphene-SiO2 nanocomposite was successfully prepared using a simple impregnation method. Graphene-SiO2 was used as a framework material, and n-nonadecane was used as a phasechange material (PCM) for thermal energy storage. The formation of n-nonadecane-graphene-SiO2 nanocomposite was confirmed using X-ray diffraction, FTIR spectroscopy, and SEM analyses. The graphene SiO2 framework effectively stabilizes the melted n-nonadecane and prevents the leakage of melted n-nonadecane during phasetransition processes. Therefore, the n-nonadecane-graphene-SiO2 nanocomposite can be used for thermal energy storage purposes such as intelligent building application.

کلیدواژه ها:

Nanocomposite ، n-nonadecane ، graphene ، SiO2 nanoparticle