DOI: https://doi.org/10.14710/jksa.25.11.394-398

Effect of pH on the Synthesis of Silica Sol-Gel Tetraethylorthosilicate-Trimethylchlorosilan (TEOS-TMCS)

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto, SH., Tembalang, Semarang, Indonesia

Received: 5 Oct 2022; Revised: 10 Nov 2022; Accepted: 20 Dec 2022; Published: 31 Dec 2022.
Open Access Copyright 2022 Jurnal Kimia Sains dan Aplikasi under http://creativecommons.org/licenses/by-sa/4.0.

Citation Format:
Abstract
Sol-gel synthesis of silica employing the co-precursor trimethylchlorosilane (TMCS) and the precursor tetraethylorthosilicate (TEOS) was accomplished. The purpose of this investigation was to ascertain how pH affected the properties of synthetic silica. The synthesized hydrophobic silica was characterized using FTIR, TGA, and GSA to determine the effect of pH adjustment on the functional group characters, thermal properties, and pore morphology. The ratio between TEOS/TMCS was fixed at 75:25 and varied the pH (4, 6, 7, 8, and 10) and the calcination temperature (without calcination, 300℃ and 500℃). FTIR analysis showed that the number of C-H and Si-OH groups in the xerogel decreased with increasing calcination temperature. Xerogel formed at pH 6 provides the highest thermal stability among other pHs. The results from the BET analysis revealed that changes in pH directly affect the physical characteristics of the surface, making the resulting gel network less rigid and more susceptible to shrinkage of pore volume and diameter in the atmosphere. Meanwhile, in an alkaline medium, continuous condensation will occur so that the pore diameter and volume decrease. The high pore diameter and volume imply that pH 7 is ideal for preparing xerogels.
Fulltext View|Download
Keywords: Silica; TEOS; TMCS; pH variation
Funding: Universitas Diponegoro

Article Metrics:

Article Info
Section: Research Articles
Language : EN
Recent articles
Optimization of Cellulase Production by Aspergillus niger InaCC F506 in Solid-State Fermentation of Tofu Dreg Synthesis of Chitosan Derivative Compounds Through Chloroacetic Acid and Heparin Grafting and Their Application as Membrane Materials with Polyvinyl Alcohol (PVA) Effect of Storage of Yellow Pigment from Halophilic Bacillus clausii J1G-0%B on Antioxidant Activity More recent articles
Most cited articles
Pengaruh Keasaman Medium dan Imobilisasi Gugus Organik pada Karakter Silika Gel dari Abu Sekam Padi Studi Filogeni dan Uji Potensi Bioremediasi serta Enzim Termostabil Ekstraseluler Isolat Geobacillus sp. dari Sumber Air Panas Gedong Songo Asam Anakardat dari Kulit Biji Jambu Mete (Anacardium Occidentale L) yang Mempunyai Aktivitas Sitotoksik Pengaruh Penambahan Surfaktan Hexadecyltrimethyl-Ammonium (HDTMA) pada Zeolit Alam Terdealuminasi terhadap Kemampuan Mengadsorpsi Fenol Utilization of Rice Husk Cellulose as a Magnetic Nanoparticle Biocomposite Fiber Source for the Absorption of Manganese (Mn2+) Ions in Peat Water More cited articles
  1. A. K. M. Ayatullah Hosne Asif, Md. Zayedul Hasan, Application of nanotechnology in modern textiles: A review, International Journal of Current Engineering and Technology, 8, 2, (2018), 227-231 https://doi.org/10.14741/ijcet/v.8.2.5
  2. Adi Darmawan, Riza Eka Saputra, Yayuk Astuti, Structural, thermal and surface properties of sticky hydrophobic silica films: Effect of hydrophilic and hydrophobic precursor compositions, Chemical Physics Letters, 761, (2020), 138076 https://doi.org/10.1016/j.cplett.2020.138076
  3. Ismail Ab. Rahman, Vejayakumaran Padavettan, Synthesis of Silica Nanoparticles by Sol-Gel: Size-Dependent Properties, Surface Modification, and Applications in Silica-Polymer Nanocomposites—A Review, Journal of Nanomaterials, 2012, (2012), 132424 https://doi.org/10.1155/2012/132424
  4. Vinayak V. Ganbavle, Uzma K. H. Bangi, Sanjay S. Latthe, Satish A. Mahadik, A. Venkateswara Rao, Self-cleaning silica coatings on glass by single step sol–gel route, Surface and Coatings Technology, 205, 23, (2011), 5338-5344 https://doi.org/10.1016/j.surfcoat.2011.05.055
  5. Poonam M. Shewale, A. Venkateswara Rao, A. Parvathy Rao, Effect of different trimethyl silylating agents on the hydrophobic and physical properties of silica aerogels, Applied Surface Science, 254, 21, (2008), 6902-6907 https://doi.org/10.1016/j.apsusc.2008.04.109
  6. Nur Hamidah, F. R. Meta, H. Setyawan, S. Affandi, Pelapisan hidrofobik pada kaca melalui metode sol-gel dengan prekursor waterglass, Jurnal Teknik POMITS, 1, 1, (2012), 1-4
  7. Ahmad Nizar, Sintesis Dan Karakterisasi Silika Aerogel Berbasis Teos (Tetraethylorthosilicate) Menggunakan Metode Sol-Gel, Inovasi Fisika Indonesia, 5, 1, (2016), 7-10
  8. Ahmed A. Issa, Adriaan S. Luyt, Kinetics of Alkoxysilanes and Organoalkoxysilanes Polymerization: A Review, Polymers, 11, 3, (2019), 537 https://doi.org/10.3390/polym11030537
  9. Maryanne M. Collinson, Sol-Gel Strategies for the Preparation of Selective Materials for Chemical Analysis, Critical Reviews in Analytical Chemistry, 29, 4, (1999), 289-311 https://doi.org/10.1080/10408349891199310
  10. Siti Sulastri, Susila Kristianingrum, Berbagai macam senyawa silika: Sintesis, karakterisasi dan pemanfaatan, Prosiding Seminar Nasional Penelitian, Pendidikan dan Penerapan MIPA, 2010
  11. Ming Li, Hongyi Jiang, Dong Xu, Ou Hai, Wei Zheng, Low density and hydrophobic silica aerogels dried under ambient pressure using a new co-precursor method, Journal of Non-Crystalline Solids, 452, (2016), 187-193 https://doi.org/10.1016/j.jnoncrysol.2016.09.001
  12. Julia C. Steinbach, Markus Schneider, Otto Hauler, Günter Lorenz, Karsten Rebner, Andreas Kandelbauer, A Process Analytical Concept for In-Line FTIR Monitoring of Polysiloxane Formation, Polymers, 12, 11, (2020), 2473 https://doi.org/10.3390/polym12112473
  13. Dwi Ratna Setya Pambudi, Mochamad Zainuri, Pengaruh Waktu Tahan Proses Kalsinasi Prekursor Silika sebagai Material Pelapis Hidrofobik, Jurnal Sains dan Seni ITS, 5, 2, (2016), B80-B83
  14. P. Ivanov, Y. Hristov, B. I. Bogdanov, P. Pashev, Synthesis of silica aerogel by surface modification, Nauch. Trudy Rusensk. Univer, 53, 10.1, (2014), 71-73
  15. Thierry Woignier, Jean Phalippou, Florence Despetis, Sylvie Calas-Etienne, Aerogel processing, in: Handbook of Sol-Gel Science and Technology, Springer, Cham, 2018, https://dx.doi.org/10.1007/978-3-319-32101-1_27
  16. Thongthai Witoon, Metta Chareonpanich, Effect of pore size and surface chemistry of porous silica on CO2 adsorption, Songklanakarin Journal of Science & Technology, 34, 4, (2012)
  17. Huan Zhou, Jihong Sun, Bo Ren, Feng Wang, Xia Wu, Shiyang Bai, Effects of alkaline media on the controlled large mesopore size distribution of bimodal porous silicas via sol-gel methods, Powder Technology, 259, (2014), 46-51 https://doi.org/10.1016/j.powtec.2014.03.060

Last update:

No citation recorded.

Last update: 2024-11-19 21:27:48

No citation recorded.