American Journal of Nanosciences

Submit a Manuscript

Publishing with us to make your research visible to the widest possible audience.

Propose a Special Issue

Building a community of authors and readers to discuss the latest research and develop new ideas.

Synthesis and Characterization of Silica Nanoparticles and Study of Impurity Removal from Silica Nanoparticles by Acid Leaching

Water in oil reverse microemulsion synthesis and characterization of silica nanoparticles and removal of impurity from silica nanoparticles have been focused. A study has been established for the synthesis of non-agglomerated spherical silica nanoparticles. These nanoparticles were characterized using SEM-EDS, XRD, and TGA. After purification silica nanoparticles were characterized by UV and ICP-MS. SEM image reveals that spherical particle size of Silica nanoparticles are obtained in about 1 nanometer scale in a non-agglomerated form. The elemental composition of SiCl4•5H2O was determined using EDS. The major elements are 3.33 of O and 0.2 of Si (% by weight). Sharp XRD pattern confirms crystalline structure of Silica nanoparticles. There is presence of other phase’s peaks due to impurities into Silica nanoparticles. TGA explain that weight loss has occurred around 100°C of silica nanoparticles indicates the removal of absorbed and residual water. The data reveals that a total mass loss of 29.23% and 48.63% at around 100°C for the SiO2 NPs. The impurities in chemically treated silica nanoparticles before and after purification were analyzed by UV-vis and ICP-MS method. It was found that chemical treatment is very pronounced by ICP-MS in the removal of certain impurities such as aluminum and Sodium but other impurity Fe is less affected. The effects of acids on the removal of impurity from Silica NPs have been studied using acid leaching: successive two mixtures composed of HCl; HCL: HNO3 with a volume composition of 1; (2:1) respectively. UV-visible light absorption measurements were applied for the evaluation of the nature and the concentration of the dissolved impurities.

Synthesis, Silica Nanoparticles, Characterization, Impurity Removal, Acid Leaching

Rexona Khanom. (2022). Synthesis and Characterization of Silica Nanoparticles and Study of Impurity Removal from Silica Nanoparticles by Acid Leaching. American Journal of Nanosciences, 8(3), 31-36.

Copyright © 2022 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

1. Devi, M. G.; Balachandran, S. A Review on synthesis, characterization and applications of silica particles. Int. J. Eng. Res. Technol. 2016, 4: 249–255.
2. Li, Z.; Barnes, J. C.; Bosoy, A.; Stoddart, J. F.; Zink, J. I. Mesoporous silica nanoparticles in biomedical applications. Chem. Soc. Rev. 2012, 41: 2590–2605.
3. Violeta P, Valentin R t, Cornelia N, Adriana B, Alina R¸t, Simona C et al. Materials, 2021, 14, 2086.
4. Ma, X., Zhou, B., Gao, W., Qu, Y., Wang, L., Wang, Z., Zhu, Y., Powder Technol. Vol. 217 2012, pp. 497-501.
5. Vajihe J and Ali Journal of Ultrafine Grained and Nanostructured Materials Vol. 47, No. 2, Dec, 2014, pp. 105-112.
6. I Made J, Rukia and Camellia P (2020) AIP Conference Proceedings 2219, 080018.
7. U Prem K, Ajay Kumar V, Katikaneani P International Journal of Emerging Technology and Advanced Engineering Vol 7, 2017, Issue 9. https://www.reaearchgate.Net/publication/320519341.
8. J. H. Potgieter, P. A. Olubambi, L. Cornish, C. N. Machio, E. S. M. Sherif. Influence of nickel additions on the corrosion behavior of low nitrogen 22% Cr series duplex stainless steels. Corros. Sci., 2008, 50: 2572–2579.
9. O. K. Abiola, J. O. E. Otaigbe, O. J. Kio. Gossipiumhirsutum L. Extracts as green corrosion inhibitor for aluminum in NaOH solution. Corros. Sci., 2009, 51: 1879-1881.
10. P. B. Raja, M. G. Sethuraman. Natural products as corrosion inhibitor for metals in corrosive media-a review Materials letters, 2008, 62: 113-116.
11. M. Belloa, N. Ochoaa, V. Balsamoa, F. L. Carrasquerob, S. Collc, A. Monsalved, G. Gonzálezd. Carbohydrate Polymers, 2010, 82: 561.
12. Adnan M, Marina J Periodicals of Engineering and Natural Sciences Vol. 9, 2021, No. 2.
13. Tuncuk A, Akcil A Removal of Iron from quartz ore using different acids: a laboratory-scale reactor study. Miner Process Extr Metall Rev, 2013, 35 (4): 217–228. 2013.825614
14. Vatalis KI, Charalambides G, Benetis NP Market of high purity quartz innovative applications. Proc Econ Fin, 2015, 24: 734–742.
15. Usama Z, Tayyab S and S. Wilayat H Journal of Sol-Gel Science and Technology, 2016, vol. 77: 753–758.
16. Feifei Li, Xuesong J, Qiuxia Z, Jingwei Li, Boyuan B and Jian C Silicon, 2021, 13: 531–541.
17. Marouan K, Messaud H and Hatem E EPJ Web of conference 2012, 29, 00014. DOI: 10.1051/epjconf/ 20122900014.