| Title |
Investigation of substitution effects in layered double hydroxides |
| Translation of Title |
Pakaitų efektų sluoksniuotuose dvigubuose hidroksiduose tyrimas. |
| Authors |
Suleimanov, Mykhailo |
| Full Text |
|
| Pages |
43 |
| Keywords [eng] |
Layered double hydroxides, substitution effects, sol-gel method, surface properties, intercalation |
| Abstract [eng] |
Investigation of substitution effects in layered double hydroxides By using sol-gel synthesis method alkaline earth metal substituted layered double hydroxides (LDHs) of Mg2-xMx/Al1 (M = Ca, Sr, Ba) were fabricated. Related MMO were obtained by calcination of Mg2- xCax/Al1 LDHs precursor gels at 650°C. The substitution effects were investigated by changing the amount and nature of the introduced alkaline earth metals. After reconstruction mixed-metal LDH samples were intercalated with citrate and tartrate anions via the anion-exchange method. The X-ray powder diffraction (XRD) analysis confirmed successful intercalation of anions into host LDHs by indicating the growth of interlayer distance. The synthesis materials were characterized using XRD, infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The specific surface area and pore size of differently substituted Mg2-xMx/Al1 LDH samples were estimated by BJH and BET methods. Obtained results demonstrated that the nature and the amount of earth-alkaline metal affect the surface properties, morphological features and purity of substituted metal-mixed LDHs. The synthesized LDH materials could be tested for different biomedical applications and could be used as precursor materials for the preparation of drug delivery systems. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Master thesis |
| Language |
English |
| Publication date |
2020 |
