OICC Press International Journal of Nano Dimension 2228-5059 12 4 2024 02 03 Nano-filler Co-nanoparticles embedded in a Silica aerogel matrix 10.22034/ijnd.2021.682422 EN Sapna Bakul Jadhav SDSM College, Palghar-401404, University of Mumbai, India. 0000-0002-7058-5767 Arwa Makki University of Jeddah, Collage of Science, Department of Biochemistry-80327, Jeddah, KSA. orcid.org/0000-0002- Dina Hajjar University of Jeddah, Collage of Science, Department of Biochemistry-80327, Jeddah, KSA. orcid.org/0000-0003- Journal Article 2024 02 03 In present research, we synthesized cobalt-based silica nanocomposites (Co-SiO2) from cobalt nitrate [Co(NO3)2] and tetraethoxysilane (TEOS) precursors by using a simple sol-gel method followed by supercritical drying techniques. The physicochemical and textual properties of the as synthesized nano composites were thoroughly investigated. The results indicated that the Co-SiO2 aerogels demonstrated homogeneous dispersion cobalt nanoparticles within silica matrix with mesoporous morphology, large specific surface area (802 m2/g) and larger pore size (9 nm) with less volume shrinkage. The physico-chemical properties of the cobalt based silica nanomaterial were characterized by XRD, SEM, N2 adsorption-desorption and FTIR techniques. Cobalt-based silica nanocomposites can be produced using TEOS-based precursor and supercritical drying techniques. The prepared (Co-SiO2) nanocatalyst due to its magnetic nature with higher surface area (802 m2/g) can be utilized in many emerging fields such as catalysis, water desalination, water splitting, gas-sensing application and organic pollutant degradation.