Yolk-shell structure of encapsulated iron oxide in PANI for highly efficient solar steam and electricity cogeneration

Title : Yolk-shell structure of encapsulated iron oxide in PANI for highly efficient solar steam and electricity cogeneration

Abstract:

A new design of a photoabsorber material was introduced to further improve water evaporation rate with great salt resistance ability. The design was an incorporation of Fe₃O₄ knowing as a good photothermal absorber material and polyaniline as a salt resistant material. Both iron oxide and polyaniline were incorporated in a core@void@shell encapsulated design called yolk shell structure, to intensify the multi-scattering effect of light through the material which promoted the water evaporation rate. First, a core shell structure Fe₃O₄@SiO₂@PANI was designed, in which   Fe₃O₄ was the core and PANI was the shell. Then, the silica SiO₂ layer was removed to produce the typical yolk shell structure. To study the effect of core on the whole encapsulated structure, three different structures of core (Bulk, Spheres and Rods) were prepared. Rods structure of core improved the role of the encapsulated yolk shell structure, giving the highest rate of evaporation of 1.9 Kg.m^-2/h with high efficiency of evaporation. Moreover, to estimate the electricity generation ability, TE module was conducted to the prepared membrane producing current and power density reached up to 2.1mA and 21.03mW/m², respectively.

Biography:

A new design of a photoabsorber material was introduced to further improve water evaporation rate with great salt resistance ability. The design was an incorporation of Fe₃O₄ knowing as a good photothermal absorber material and polyaniline as a salt resistant material. Both iron oxide and polyaniline were incorporated in a core@void@shell encapsulated design called yolk shell structure, to intensify the multi-scattering effect of light through the material which promoted the water evaporation rate. First, a core shell structure Fe₃O₄@SiO₂@PANI was designed, in which   Fe₃O₄ was the core and PANI was the shell. Then, the silica SiO₂ layer was removed to produce the typical yolk shell structure. To study the effect of core on the whole encapsulated structure, three different structures of core (Bulk, Spheres and Rods) were prepared. Rods structure of core improved the role of the encapsulated yolk shell structure, giving the highest rate of evaporation of 1.9 Kg.m^-2/h with high efficiency of evaporation. Moreover, to estimate the electricity generation ability, TE module was conducted to the prepared membrane producing current and power density reached up to 2.1mA and 21.03mW/m², respectively.