Pengujian Gugus Fungsi Silika Berbasis Sekam Padi Dengan Variasi Suhu & Konsentrasi Cetyltrimethylammonium Bromide Sebagai Bahan Baku Mesoporous Silica

Abstract

Research has been conducted to test silica function groups based on rice husks with temperature variations and concentrations of Cetyltrimethylammonium Bromide as raw materials for mesoporous silica. In this study, rice husk silica was synthesized by alkaline method with variations in CTAB concentrations of 2.0%, 2.5%, 3.0%, 3.5%, and hydrothermal treatments with temperature variations of 120, 130, 145, and 160ºC for 1 hour in an autoclave. Fourier-Transform Infrared (FTIR) results showed the presence of the most dominant clusters, namely Si-O-Si and other groups such as C-H, -H, O-H, and –OH. Therefore, silica-based rice husks can be used as raw materials mesoporous silica

The Effect of Silica Concentration on The Absorption Properties of Silica-Based Ceramic Membrane

“…4(B) is IR spectroscopy for the silica-filled Clay-PVA-PEG ceramic membrane after the sintering furnace. In the ceramic membrane after sintering there are only two functional groups of content that can be detected by the FTIR tool, namely at the absorption peak of 715.6 indicating the presence of silica with symmetry Si-O-Si stretching vibrations, by Rumiyanti et al, 2021 [13] which reveals that at 790.2 cm-1 indicates the presence of symmetrical Si-O-Si stretching vibrations. The same thing is also shown at wave number 1013.8 which is an asymmetric stretching vibration of Si-O-Si.…”

Characteristics of Mesoporous Silica Nanoparticles-Benzotriazole (MSN-BTA) Using Rice Husk as an Environmentally Friendly Precursor

“…Synthesis of MSN. The first step was the extraction of rice husks silica following our previous research step [9] by sol-gel method. Then, 6 grams of silica powder from the extraction of rice husks were blended with NaOH 2 M in 100 ml of aqua-dest.…”

“…1(a) shows the MSN had heterogeneous sizes with a certain level of agglomeration, which signifies the presence of close-packed rod-like micelles amidst the MSN synthesis [11]. Spread in supramolecular forms in a colloid, and these micelles were formed by surfactant CTAB molecules [9]. The length of a rod-like micelle is determined by the nature of the catalyst (NaOH) [12].…”

“…Figure 3 shows the results of the SEM-EDS analysis of pristine MSN dan MSN-BTA with various mass concentrations (8 and 10 grams). The morphologies of the whole sample surfaces were spherical and globular, like coral reefs [9]. Figure 2(a) shows that the atom composition of the pristine MSN consisted of only C, Si, O, and Cl, which were 54, 24, 19, and 1%, respectively.…”