Fig. 1. IR spectra of different samples (color online)

Fig. 2. XRD patterns of different samples

Fig. 3. Thermogram of different samples (color online)

Fig. 4. Optical photographs of different samples

Fig. 5. SEM images of different samples

Fig. 6. Relationship between monomer content and weight gain rate for different samples

Fig. 7. Relationship between embedding concentration and embedding rate of different samples: (a) SiO₂; (b) P25; (c) Fe₂O₃; (d) Fe₃O₄

Fig. 8. Effects of absorbed doses on the weight gain rate of different samples

Fig. 9. Adsorption patterns of different samples

Fig. 10. Diagram of the possible adsorption mechanism of the MCC-g-GMA@SiO₂ adsorbent