Synthesis and characterization of silica xerogel and aerogel from rice husk ash and pulverized beach sand via sol-gel route
Keywords:
Rice husk ash; Pulverized beach sand; Sol-gel route; Drying techniques Xerogel; AerogelAbstract
The high cost and toxicity associated with the use of orthosilicates as silica precursors drive growing interest in an environmentally friendly and cost - efficient natural silica source. Rice husk (a biomass) and beach sand are both natural and non - toxic and the extraction of silica from each using sodium hydroxide makes the process green for the production of nanosilica gels (xerogel and aerogel) via the sol – gel route. The gels from the ash of rice husk and pulverized beach sand were dried by the use of a laboratory oven and supercritical extraction methods. The structures of the gels were studied through X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), scanning electron microscopy (SEM), X - ray fluorescence (XRF) spectroscopy and Fourier transform infrared (FTIR) spectroscopic analyses. XRF spectroscopy revealed silicon in its oxide form as the prominent element with low levels of trace elements concentrations. XRD results showed the crystalline nature of the prepared silica. TEM images confirmed the crystalline and nanometric structures of the streak - free xerogel and aerogel. SAED confirmed that the gels were polycrystalline with no streaks. SEM monographs showed varied globes of fine surfaces indicating the high level of purity of the gels. FTIR showed the absorption peaks of the silanol-OH bond and Si-O-Si vibration, confirming the gels as nanometric structures. The high yield, crystalline nature, purity and crystallographic features of the produced silica suggest rice husk ash and pulverized beach sand as alternative silica sources for the production of silica gels nanoparticles with potential applications in biomedical field, nanofiltration and as additive for improving the strength of materials.
Published
How to Cite
Issue
Section
Copyright (c) 2023 K. M. Omatolaa, A. D. Onojah, A. N. Amah, I. Ahemen

This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Similar Articles
- C. O. Lawani, G. J. Ibeh, O. O. Ige, Eli Danladi, J. O. Emmanuel, A. J. Ukwenya, P. O. Oyedare, Corrigendum to "Numerical Simulation of Copper Indium Gallium Diselenide Solar Cells Using One Dimensional SCAPS Software [J. Nig. Soc. Phys. Sci. 3 (2021) 48–58, https://doi.org/10.46481/jnsps.2021.133]" , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 3, August 2021
- Olumide O. Olaiya, Mark I. Modebei, Saheed A. Bello, A One-Step Block Hybrid Integrator for Solving Fifth Order Korteweg-de Vries Equations , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 3, August 2022
- Opeyemi O. Enoch, Catherine O. Alakofa , Lukman O. Salaudeen , Odd Order Integrator with Two Complex Functions Control Parameters for Solving Systems of Initial Value Problems , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 1, February 2023
- Yaulande Douanla Alotse, Mamadou Ossénatou, Dembele André, Lenouo André, Bivariate and Partial Wavelet Coherence analysis of aerosols impact on Global Horizontal Irradiation in Far-North and Littoral regions of Cameroon , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 1, February 2023
- E. Omugbe, M. Abu-Shady, E. P. Inyang, Approximate bound state solutions of the fractional Schr\"{o}dinger equation under the spin-spin-dependent Cornell potential , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 1, February 2024
- O. M. Adedokun, O. P. Oladejo, K. N. Alao, E. O. Adeniyi, H. Otobrise, K. O. Suleman, T. A. Adagunodo, O. Adedokun, L. A. Sunmonu, Delineation of structural lineaments of Shaki West Southwestern Nigeria using high resolution aeromagnetic data , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- C. A. Onate, S. O. Mobolaji, J. A. Akinpelu, Eigensolutions and thermodynamic properties constrained by magnetic field of cyclotron frequency , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- J. O. Kuboye, O. F. Quadri, O. R. Elusakin, Solving third order ordinary differential equations directly using hybrid numerical models , Journal of the Nigerian Society of Physical Sciences: Volume 2, Issue 2, May 2020
- M. Kida, S. Adamu, O. O Aduroja, P. T Pantuvo, Numerical Solution of Stiff and Oscillatory Problems using Third Derivative Trigonometrically Fitted Block Method , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 1, February 2022
- T. W. David, B. J. Adekoya, C. M. Michael, S. A. Adekoya, O. A. Adenuga, S. O. Kareem, H. T. Oladunjoye, A. E. Ajetunmobi, O. T. Williams, D. T. Ogundele, A Study of the Relationship Between Southward Bz > -10 nT and Storm Time Disturbance Index During Solar Cycle 23 , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 4, November 2022
You may also start an advanced similarity search for this article.

