Figures & data
Figure 1. FTIR spectra of pristine sepiolite (PS), modified sepiolite by acidic method (AS) and basic method (BS).
Figure 2. Molecular structure and the corresponding carbonyl FTIR peaks of monomolecular γ-MPS molecules.
Figure 3. Thermogravimetric curves of PS, AS and BS.
Figure 4. TGA thermogram of γ-MPS.
Figure 5. XRD patterns of pristine sepiolite (PS), AS and BS.
Figure 6. SEM micrographs of (a) PS, (b) AS and (c) BS.
Figure 7. Separation analyses in LUMI Reader®. Sedimentation behaviour of PS, AS and BS.
Figure 8. Visual observations of sedimentation of nanosepiolite in ethanol (a) immediately after mixing, (b) after four days, (c) after one week and (d) after one month.
Figure 9. The effect of pH on the zeta potential of modified sepiolite samples.
