Figures S1 - S5 from Preparation of core–shell structured CaCO₃ microspheres as rapid and recyclable adsorbent for anionic dyes

N₂ adsorption/desorption isotherms and pore-size distribution (inset) of the obtained core-shell structured CaCO₃ MSs; TG analysis of Hesp (a), pure CaCO₃ without Hesp and the obtained core-shell structured CaCO₃ MSs (b).; SEM image of the CaCO₃ MSs after 5 recycling experiments.; N₂ adsorption/desorption isotherms and pore-size distribution (inset) of the CaCO₃ MSs after 5 recycling experiments.; Three-dimensional histogram of the dye adsorption efficiency on the CaCO₃ MSs in 6-10th cycles of the adsorption-desorption