Main Article Content

Wasan H. Al-husseny
Israa F. Al-Sharuee
Ban R. Ali


Five types of silica aerogel were prepared at ambient pressure: sodium silicate, TEOS, and sodium silicate, with TEOS utilized as precursors. We investigated the effects of catalysis, mixing water or ethanol with the precursors, as well as the procedure of modification. Aqueous is a low-cost alternative, and many applications utilize it. A manufacturing colloidal silicic acid hydrosol was created from the ion exchange of an industrial water glass. The properties of physical, chemical, and hydrophobicity were examined via density, XRD, FTIR, and contact angle. BET, FESEM, and EDS analysis determined the structural properties. The silica hydrogel's pore liquid (H20) was successively removed. The spectral properties confirmed the modification by the derived high contact angle of 152º, low transparency, and amorphous structure. The resulting aerogel monoliths have a well-developed mesoporous structure, a large specific surface area of 961 m2/g, and a low density of 0.04 g/cm3.


Download data is not yet available.

Article Details

How to Cite
Al-husseny, W. H. ., Al-Sharuee, I. F., & Ali, B. R. (2023). SPECTRAL AND STRUCTURAL ANALYSIS FOR SODIUM SILICATE-BASED AEROGEL VIA NORMAL DRYING PRESSURE. Malaysian Journal of Science, 42(2), 47–55. https://doi.org/10.22452/mjs.vol42no2.7
Original Articles


Aegerter, M. A., Leventis, N., & Koebel, M. M. (2011). Aerogels handbook: Springer Science & Business Media.

Al-Mothafer, Z., & Abdulmajeed, I. (2021). Comparative study in use sodium silicate instead of NH 4 OH as an alkaline basic catalyst to gelation unmodified silica aerogel based on tetraethoxysilane (TEOS). Journal of Ovonic Research, 17(4).

Al-Mothafer, Z., Abdulmajeed, I., & Al-Sharuee, I. (2021). effect of oxalic acid as a catalyst and dry control chemical additive (dcca) for hydrophilic aerogel base sodium silicate by ambient pressure drying. Journal of Ovonic Research Vol, 17(2), 175-183.

Al-sharuee, I. F. (2019). Thermal Conductivity Performance of Silica Aerogel after Exposition on Different Heating under Ambient Pressure. Baghdad Science Journal, 16(3 (Suppl.)), 0770-0770.

AL-Sharuee, I. F. (2021). Specifications study of Hydrophobic Silica Aerogel Doped with Rhodamine 6G Prepared via Sub-Critical Drying Technique. Iraqi Journal of Science, 483-489.

Al-sharuee, I. F., & Mohammed, F. H. (2019). Investigation study the ability of superhydrophobic silica to adsorb the Iraqi crude oil leaked in water. Paper presented at the IOP Conference Series: Materials Science and Engineering.

Bhagat, S. D., Kim, Y.-H., Suh, K.-H., Ahn, Y.-S., Yeo, J.-G., & Han, J.-H. (2008). Superhydrophobic silica aerogel powders with simultaneous surface modification, solvent exchange and sodium ion removal from hydrogels. Microporous Mesoporous Materials, 112(1-3), 504-509.

Bhagat, S. D., & Rao, A. V. (2006). Surface chemical modification of TEOS based silica aerogels synthesized by two step (acid–base) sol–gel process. Applied Surface Science, 252(12), 4289-4297.

Cheng, Y., Xia, M., Luo, F., Li, N., Guo, C., & Wei, C. s. (2016). Effect of surface modification on physical properties of silica aerogels derived from fly ash acid sludge. Colloids Surfaces A: Physicochemical Engineerin Aspects, 490, 200-206.

Daniel, C., Longo, S., Ricciardi, R., Reverchon, E., & Guerra, G. (2013). Monolithic nanoporous crystalline aerogels. Macromolecular rapid communications, 34(15), 1194-1207.

Dorcheh, A. S., & Abbasi, M. (2008). Silica aerogel; synthesis, properties and characterization. Journal of materials processing technology, 199(1-3), 10-26.

Durães, L., Ochoa, M., Rocha, N., Patrício, R., Duarte, N., Redondo, V., & Portugal, A. (2012). Effect of the drying conditions on the microstructure of silica based xerogels and aerogels. Journal of nanoscience nanotechnology, 12(8), 6828-6834.

Feng, Q., Chen, K., Ma, D., Lin, H., Liu, Z., Qin, S., . . . Aspects, E. (2018). Synthesis of high specific surface area silica aerogel from rice husk ash via ambient pressure drying. Colloids Surfaces A: Physicochemical Engineering spects, 539, 399-406.

He, S., & Chen, X. (2017). Flexible silica aerogel based on methyltrimethoxysilane with improved mechanical property. Journal of Non-Crystalline Solids, 463, 6-11.

He, S., Huang, Y., Chen, G., Feng, M., Dai, H., Yuan, B., & Chen, X. (2019). Effect of heat treatment on hydrophobic silica aerogel. Journal of Hazardous materials, 362, 294-302.

Huang, Y., He, S., Feng, M., Dai, H., Pan, Y., & Cheng, X. (2019). Organic solvent-saving preparation of water glass based aerogel granules under ambient pressure drying. Journal of Non-Crystalline Solids, 521, 119507.

Khedkar, M. V., Somvanshi, S. B., Humbe, A. V., & Jadhav, K. (2019). Surface modified sodium silicate based superhydrophobic silica aerogels prepared via ambient pressure drying process. Journal of Non-Crystalline Solids, 511, 140-146.

Li, M., Jiang, H., Xu, D., Hai, O., & Zheng, W. J. J. o. N.-C. S. (2016). Low density and hydrophobic silica aerogels dried under ambient pressure using a new co-precursor method. 452, 187-193.

Mazrouei-Sebdani, Z., Salimian, S., Khoddami, A., & Shams-Ghahfarokhi, F. (2019). Sodium silicate based aerogel for absorbing oil from water: the impact of surface energy on the oil/water separation. Materials Research Express, 6(8), 085059.

Monshi, A., Foroughi, M. R., & Monshi, M. R. (2012). Modified Scherrer equation to estimate more accurately nano-crystallite size using XRD. World J Nano Sci Eng, , 2: 154, 160.

Nguyen, B. N., Meador, M. A. B., Medoro, A., Arendt, V., Randall, J., McCorkle, L., & Shonkwiler, B. (2010). Elastic behavior of methyltrimethoxysilane based aerogels reinforced with tri-isocyanate. ACS Applied Materials Interface, 2(5), 1430-1443.

Pan, Y., He, S., Cheng, X., Li, Z., Li, C., Huang, Y., & Gong, L. (2017). A fast synthesis of silica aerogel powders-based on water glass via ambient drying. Journal of Sol-Gel Science Technology, 82(2), 594-601.

Sarawade, P. B., Kim, J.-K., Hilonga, A., & Kim, H. T. (2010). Production of low-density sodium silicate-based hydrophobic silica aerogel beads by a novel fast gelation process and ambient pressure drying process. Solid State Sciences, 12(5), 911-918.

Shao, Z., Luo, F., Cheng, X., & Zhang, Y. (2013). Superhydrophobic sodium silicate based silica aerogel prepared by ambient pressure drying. Materials Chemistry, 141(1), 570-575.

Shi, M., Tang, C., Yang, X., Zhou, J., Jia, F., Han, Y., & Li, Z. (2017). Superhydrophobic silica aerogels reinforced with polyacrylonitrile fibers for adsorbing oil from water and oil mixtures. RSC advances, 7(7), 4039-4045.

Shirtcliffe, N., McHale, G., Newton, M., & Perry, C. (2003). Intrinsically superhydrophobic organosilica sol− gel foams. Langmuir, 19(14), 5626-5631.

Wagh, P., Ingale, S., & Gupta, S. C. (2011). New technology for rapid processing and moulding of silica aerogel materials in prescribed shapes and sizes and their characterization. Journal of sol-gel science technology, 58(2), 481-489.

Wang, J., Zhang, Y., Wei, Y., & Zhang, X. (2015). Fast and one-pot synthesis of silica aerogels via a quasi-solvent-exchange-free ambient pressure drying process. Microporous Mesoporous Materials, 218, 192-198.

Wang, X.-D., Sun, D., Duan, Y.-Y., & Hu, Z.-J. (2013). Radiative characteristics of opacifier-loaded silica aerogel composites. Journal of non-crystalline solids, 375, 31-39.

Wingfield, C., Franzel, L., Bertino, M. F., & Leventis, N. (2011). Fabrication of functionally graded aerogels, cellular aerogels and anisotropic ceramics. Journal of Materials Chemistry, 21(32), 11737-11741.

Zhang, X., Chen, Z., Zhang, J., Ye, X., & Cui, S. (2021). Hydrophobic silica aerogels prepared by microwave irradiation. Chemical Physics Letters, 762, 138127.

Zhao, Y., Li, Y., & Zhang, R. (2018). Silica aerogels having high flexibility and hydrophobicity prepared by sol-gel method. Ceramics International, 44(17), 21262-21268.

Zhou, B., Shen, J., Wu, Y., Wu, G., & Ni, X. (2007). Hydrophobic silica aerogels derived from polyethoxydisiloxane and perfluoroalkylsilane. Materials Science Engineering: C, 27(5-8), 1291-1294.