Impact of Au nanoparticles on the thermophysicalparameters of Fe3O4 nanoparticles for seawater desalination

Abstract

The objective of the present study is to investigate the impact of gold nanoparticles (Au NPs) on the thermo-optical parameters of Fe3O4 (NPs), which can be used in seawater desalination cycles. The SEM and the EDX were used to obtain the compositional structure. The observed optical characteristic peaks of UV–visible absorption spectra depend mainly on the size of the particle and the suspension medium. With the addition of AuNPs, both the optical direct band gap (Eg) and the electronegativity decreased, while the refractive index increased. The deep analysis of the optical conductivities has revealed the influence of seawater conductivity on the efficiency. The morphology and structural investigation and crystal size were performed by means of the (TEM), and (XRD), that showed a spherical shape structure for the Au/Fe3O4 NCs, corresponding to surface Plasmon of the Au NPs, and the exciting of Fe3O4 (NPs). A highly sensitive photoacoustic (PA) technique has been utilized to investigate the thermal parameters. Moreover, the (PA) technique, and the surface modification of Nano black particles using nonionic surfactant, were boosted with heat exchange and their values imply the possibility of improving the solar thermal conversion efficiency through the combination of morphological and elemental information of the addition of Au NPs to Fe3O4 (NPs).