Preparation of hydrophobic nanostructured silica particles by aerosol assisted self-assembly

Author

Jang, Hee Dong ; Kil, Dae Sup ; Chang, Hankwon ; Cho, Kuk ; Kim, Sun Kyung ; Oh, Kyoung Joon

Author_Institution

Dept. of Ind. Mater. Res., Korea Inst. of Geosci. & Miner. Resources, Daejeon, South Korea

fYear

2010

fDate

17-20 Aug. 2010

Firstpage

511

Lastpage

514

Abstract

Hydrophobic nanostructured silica (SiO₂) particles were synthesized from sprayed droplets of a colloid containing SiO₂ nanoparticles, a surface modifier and a solvent by aerosol assisted self-assembly. Trimethylchlorosilane (TMCS) and ethyl alcohol were used as a surface treating agent and a solvent, respectively. Morphology, pore size distribution, specific surface area, chemical bonds, and hydrophobicity of the self-assembled particles were analyzed. The self-assembled particles were spherical in shape and composed of micro, meso and macro pores. Average diameter of the product particles was around 2 μm. The pore size distribution of the particles ranged from 1.5 to 200 nm. The degree of methanol wettability representing hydrophobicity of the product particles was directly proportional to TMCS concentration and ranged from 35 to 58%.

Keywords

bonds (chemical); colloids; drops; hydrophobicity; nanofabrication; nanoparticles; self-assembly; silicon compounds; wetting; SiO₂; TMCS; aerosol assisted self-assembly; chemical bonds; colloid; ethyl alcohol; hydrophobic nanostructured silica particles; methanol wettability; morphology; pore size distribution; size 1.5 nm to 200 nm; solvent; sprayed droplets; surface modifier; surface treating agent; trimethylchlorosilane;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2010 10th IEEE Conference on

Conference_Location

Seoul

ISSN

1944-9399

Print_ISBN

978-1-4244-7033-4

Electronic_ISBN

1944-9399

Type

conf

DOI

10.1109/NANO.2010.5697911

Filename

5697911