Browse > Article
http://dx.doi.org/10.3740/MRSK.2010.20.2.78

Surface Modification Silica Nanoparticles by Aerosol Self Assembly  

Kil, Dae-Sup (Industrial Materials Research Department, Korea Institute of Geoscience and Mineral Resources)
Jang, Hee-Dong (Industrial Materials Research Department, Korea Institute of Geoscience and Mineral Resources)
Chang, Han-Kwon (Industrial Materials Research Department, Korea Institute of Geoscience and Mineral Resources)
Cho, Kuk (Industrial Materials Research Department, Korea Institute of Geoscience and Mineral Resources)
Kim, Sun-Kyung (Department of Chemical and Biomolecular Engineering, Sogang University)
Oh, Kyoung-Joon (Department of Chemical and Biomolecular Engineering, Sogang University)
Choi, Jin-Hoon (Department of Chemical and Biomolecular Engineering, Sogang University)
Publication Information
Korean Journal of Materials Research / v.20, no.2, 2010 , pp. 78-81 More about this Journal
Abstract
Surface modification of silica nanoparticles was investigated using an aerosol self assembly. Stearic acid was used as surface treating agent. A two-fluid jet nozzle was employed to generate an aerosol of the colloidal suspension, which contained 20 nm of silica nanoparticles, surface modifier, and ethyl alcohol. Powder properties such as morphology, specific surface area and pore size distribution were analyzed by SEM, BET and BJH methods, respectively. Surface properties of the silica power were analyzed by FT-IR. The OH bond of the $SiO_2$ surface was converted to a C-H bond. It was revealed that the hydrophilic surface changed to a hydrophobic one due to the aerosol self assembly. Morphology of the surface treated powder was nanostructured with lots of pores having an average diameter of around $2\;{\mu}m$. Depending on the stearic acid concentration (0.25 to 1.0 wt%), the pore size distribution of the particles and the degree of hydrophobicity ranged from 1.5 nm to 180 nm and 29.6% to 50.2%, respectively.
Keywords
nanostructured material; surface modification; silica nanoparticles; aerosol self-assembly;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 F. Caruso, R. A. Caruso, and H. Mohwald, Science, 282, 1111 (1998).   DOI   ScienceOn
2 H. Giesche, J. Eur. Ceram. Soc., 14, 205 (1994).   DOI   ScienceOn
3 H. D. Jang, Aerosol Sci. Technol., 30, 477 (1999).   DOI   ScienceOn
4 L. Madler, H. K. Kammler, R. Mueller and S. E. Pratsinis, J. Aerosol Sci., 33, 369 (2002).   DOI   ScienceOn
5 C. Gellermann, W. Storch and H. Wolter, J. Sol-Gel Sci. Tech., 8, 173 (1997).
6 S. Y. Oh, I. N. Kim, J. W. Choi, M. S. Kim and H. D Jang, J. Korean Ind. Eng. Chem., 11(8), 890 (2000).
7 K. N. Pham, D. Fullston, K. Sagoe-Crentsil, J. Colloid Interface Sci. 315, 123 (2007).   DOI   ScienceOn
8 T. Kimura, M. Suzuki, S. Tomura, and K. Oda, Chemistry Letters, 32, 188 (2003).   DOI   ScienceOn
9 Y. Nishida, H. Takahashi, M. Iso, M. Matsuoka and R. Partch, Advanced Powder Technol., 16, 639 (2005).   DOI   ScienceOn
10 R. Shen, P. H. C. Camargo, Y. Xia, and H. Yang, Langmuir, 24, 11189 (2008)   DOI   ScienceOn
11 Y. Ouabbas, A. Chamayou, L. Galet, M. Baron, G. Thomas, P. Grosseau, B. Guilhot, Powder Technol., 190, 200 (2009).   DOI   ScienceOn
12 H. Chang, J. Park, H. D. Jang, Colloids and Surfaces A: Physicochem. Eng. Aspects, 313314,140 (2008).
13 E. Barret, L. G. Joyner, P. P. Halenda, J. Am. Chem. Soc., 73, 373 (1951).   DOI