Nano Archive

One-step flame method for the synthesis of coated composite nanoparticles

Sheen, Sowon and Yang, Sangsun and Jun, Kimin and Choi, Mansoo (2009) One-step flame method for the synthesis of coated composite nanoparticles. Journal of Nanoparticle Research, 11 (7). pp. 1767-1775.

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A simple in situ flame coating method has been developed by designing a new type of coflow diffusion flame burner having a sliding unit. The sliding unit was shown to be very effective in finding a right position where the precursor for coating layer should meet with core particles. SiO2-coated TiO2 nanoparticles were first prepared and whether most surfaces of particles were coated was examined by both direct observation of particles through a transmission electron microscope and Zeta potential measurements. Mean core sizes varied from 28 to 109 nm and mean coating thickness was about 2.4 nm for silica-coated titania particles. By simply changing chemical precursors, we demonstrated that SiO2-coated SnO2, SnO2-coated TiO2, SiO2–SnO2-coated TiO2 nanoparticles could be also synthesized.

Item Type:Article
Uncontrolled Keywords:Flame method - Aerosol coating - Coated particles - Composite particles
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:7715
Deposited By:Lesley Tobin
Deposited On:31 Mar 2010 16:22
Last Modified:31 Mar 2010 16:22

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