One-Pot Synthesis of Hydrophobic Silica Nano Particles with Long-Chain Alcohol 1-Octadecanol

Document Type : Original Articles

Authors

• Maliheh Dargahi Zaboli ¹
• Eghbal Sahraei ¹
• Behzad Pourabbas ¹
• Brain Korgel ²

¹ Sahand university of technology

² Umiversity of Texas at Austin

10.22067/ma.v0i29.40156

Abstract

In this work, one-pot synthesis of modified silica nanoparticles with long-chain alcohol 1-Octadecanol by stober method at 70 C is presented. Hydrophobicity of particles increased dramatically by increasing the amount of 1-Octadecanol up to 7 wt.%. Surface modification was completed during the first 90 minutes. Additional reaction time had no further effect. The most possible modification was obtained when the reaction took place at pH=8. Successful surface modification was confirmed by FT-IR spectroscopy, thermogravimetric analyses and contact angle measurements. X-ray diffraction patterns indicate an amorphous structure which did not significantly change by surface modification. Transmission electron microscopy images were used to investigate the morphology and dimension of the silica particles.

Keywords

• One-Pot Synthesis
• Surface Modification
• Silica Nanoparticles
• Hydrophobic
• 1-Octadecanol
• Stober Method

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