ADSORPTION PROPERTIES OF MESOGOVAC SIO2 OBTAINED BASED ON SAPONINS
Keywords:
Saponins, mesoporous SiO₂, green synthesisAbstract
In the course of the research, the mesoporous SiO₂ material was synthesized using the sol-gel method. The synthesis conditions — pH environment, temperature, reaction time, and saponin concentration — were optimized. The physicochemical and structural properties of the obtained materials were studied using modern analytical methods. In particular, the Brunauer–Emmett–Teller (BET) method was used to determine the surface area and pore parameters, X-ray diffraction (XRD) to evaluate the structure, and scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to determine the morphology. According to the results, the specific surface area of the mesoporous SiO₂ was 801 m²/g, the total pore volume was 0.00105 cm³/g, and the average pore diameter was 2 nm. These indicators confirm that the material has high dispersion and adsorption properties
References
1. McCullen, S. B., Vartuli, J. C., Kresge, C. T., Roth, W. J., Beck, J. S., Schmitt, K. D., ... &
Lutner, J. D. A new family of mesoporous molecular sieves //Access in Nanoporous Materials. –
Boston, MA : Springer US, 2002. – С. 1-11.
2. Zhao, D., Feng, J., Huo, Q., Melosh, N., Fredrickson, G. H., Chmelka, B. F., & Stucky, G.
D. Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores
//science. – 1998. – Т. 279. – №. 5350. – С. 548-552.
journal.namdu.uz --- 669 --- universaljurnal.uz
“Ilmiy tadqiqotlarni amaliyotga joriy qilishning muammo va yechimlari” mavzusidagi onlayn
xalqaro ilmiy-amaliy anjuman materiallar to‘plami. NamDU - 2026-yil 20-21-fevral
3. Langmuir I. The adsorption of gases on plane surfaces of glass, mica and platinum //Journal
of the American Chemical society. – 1918. – Т. 40. – №. 9. – С. 1361-1403.
4. Ho Y. S., McKay G. Pseudo-second order model for sorption processes //Process
biochemistry. – 1999. – Т. 34. – №. 5. – С. 451-465.
5. Jovita, S., Holilah, H., Khairunisa, N. N., Bahruji, H., Nugraha, R. E., Sholeha, N.
A.,Prasetyoko, D. Mesoporous silica catalyst using Sapindus rarak extract as template for
deoxygenation of waste cooking oil to biofuels //Case Studies in Chemical and Environmental
Engineering. – 2024. – Т. 10. – С. 100935.
6. Ulugboyeva, G., Fazlieva, N., Mukhamadiev, N., Fayziyeva, G. SYNTHESIS AND STUDY
OF TEXTURE AND SORPTION CHARACTERISTICS OF MESAPOROUS SILICA GEL
MODIFIED BY NANOMAGNETIC MATERIAL Fe3O4 //2025 yil 1-son (149/2). – 2025. – Т. 1. –
№. 167. – С. 5-9.
7. Ulugboyeva, G., Kuliboyeva, N., Uzokov, J., Fazliyeva, N., Mukhamadiev, N. REMOVAL
OF HEAVY METAL CATIONS USING MESOPOROUS SILICAGEL MODIFIED WITH LCYSTEINE //Issue 3 of 2025 (151/2). – 2025. – Т. 3. – №. 174. – С. 5-10.
8. Ulugboyeva, G., Uzokov, J., Mukhamadiev, N., Norboev, H. Synthesis and texture
characteristics of mesoporous silica //AIP Conference Proceedings. – AIP Publishing LLC, 2024. – Т.
3244. – №. 1. – С. 050023.
9. Croizet-Berger, K., Delmeule, M., Estager, J., Mannu, N., Kartheuser, B. Mesoporous silicas
and method for the synthesis thereof : пат. 11427476 США. – 2022.
10.Kresge, A. C., Leonowicz, M. E., Roth, W. J., Vartuli, J. C., Beck, J. S. Ordered mesoporous
molecular sieves synthesized by a liquid-crystal template mechanism //nature. – 1992. – Т. 359. – №.
6397. – С. 710-712.