*3.1.2 Thermal analysis*

The analyses of the results of the thermal properties of the powder are presented in **Figure 1**. The thermogravimetric analysis (TGA) (in red) provides the loss of mass of the material during thermal degradation. The heat treatment process is that described by Verma et al. [26]. The blue-colored thermogravimetric (DTG) curve gives the shell degradation temperature profile as defined by Balakrishnan et al. [27].

