Figures S1 - S5 from Preparation of core–shell structured CaCO<sub>3</sub> microspheres as rapid and recyclable adsorbent for anionic dyes

N<sub>2</sub> adsorption/desorption isotherms and pore-size distribution (inset) of the obtained core-shell structured CaCO<sub>3</sub> MSs; TG analysis of Hesp (a), pure CaCO<sub>3</sub> without Hesp and the obtained core-shell structured CaCO<sub>3</sub> MSs (b).; SEM image of the CaCO<sub>3</sub> MSs after 5 recycling experiments.; N<sub>2</sub> adsorption/desorption isotherms and pore-size distribution (inset) of the CaCO<sub>3</sub> MSs after 5 recycling experiments.; Three-dimensional histogram of the dye adsorption efficiency on the CaCO<sub>3</sub> MSs in 6-10th cycles of the adsorption-desorption.