Abstract
BACKGROUND: Microemulsion is the easiest and cleanest of the popular methods of synthesizing nanomaterial. This work investigated the possibility of forming a single-phase microemulsion using ethanediyl-α,β-bis (cetyldimethylammonium bromide), termed EbCDAB, in a n-hexanol/water system, and looked for the best scale of microemulsion to synthesize TiO2 to give the best cleaning of organic pollution. RESULTS: Results confirm that EbCDAB, n-hexanol and water form a microemulsion system, and this system is an effective way to synthesize nanoparticles of TiO2. Photo catalysis experiments showed sample E6−3 to be the best catalyst, and it decomposed 82% of Methyl Orange (10 mg L−1) in 60 min under UV-light irradiation. E6−3 had 1.4 times higher activity than the commercial P25. Analyses using transmission electron microscopy (TEM), X-ray diffraction (XRD), thermographic differential scanning calorimetry (TG-DSC) and Fourier transform infrared microscopy (FT-IR), showed that particles of E6−3 were of size around 11 nm and of anatase phase. CONCLUSION: The best microemulsion was found to have weight ratio n-hexanol:EbCDAB:water of 6:3:1. At this ratio, TiO2 nanoparticles were easily produced. Copyright © 2010 Society of Chemical Industry
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