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All Journal JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)
Telambanua, Claresta Ingrid
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Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology

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Effect of Addition of Oleic Acid as a Template with Tetraethylorthosilicate (TEOS) as Source of Silica on Porosity Mesoporous Silica Material Andriayani; Telambanua, Claresta Ingrid; Nainggolan, Hamonangan
Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v5i1.11993

Abstract

Mesoporous silica material has been synthesized using tetraethylorthosilicate (TEOS) as a source of silica, oleic acid as a template, and 3-aminopropyltrimethoxysilane (APMS) as co-structure directing agents (CSDA). The synthesis of silica material was made with a variation in the mole ratio of TEOS: Oleic acid with a ratio of 1: 0.2; 1: 0.3; 1: 0.5; 1: 0.6; 1: 0.7; 1: 0.9, and 1: 1. A mixture between TEOS and APMS was added to a mixture of oleic acid, HCl 0.1N and demineralized water then stirred at room temperature for 2 hours. Then aging, the mix at 80oC for 48 hours until solids are formed. Product separation was used in the centrifugation method. The resulting solid was dried at 50oC, and to remove the template, calcined at 550oC for 6 hours. The product of XRD analysis has a wider diffraction peak that indicates an amorphous material. The FT-IR spectrum shows the Si-OH and Si-O-Si groups which area characteristic of silica material. The product of SEM analysis offers the presence of sheets and plates of particle forms with different sizes. Adsorption desorption isotherm (BET) shows an isotherm type IV curve, and dominant pore sizes are 1.945 and 4.588 nm.
Co-Authors Andriayani Hamonangan Nainggolan, Hamonangan