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

مهندسی متالورژی و مواد

Article 1, Volume 29, Issue 1 - Serial Number 17, March 2018, Pages 11-20   

Document Type: Original Articles

DOI: 10.22067/ma.v0i29.40156

Authors

Maliheh Dargahi Zaboli^{* 1}; Eghbal Sahraei¹; Behzad Pourabbas¹; Brain Korgel²

¹Sahand university of technology

²Umiversity of Texas at Austin

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

Supplementary Files

2-dargahi_AK_EDITS.pdf

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