Decolorization of beads-milled TiO2 nanoparticles suspension in an organic solvent

Joni, I Made and Ogi, Takashi and Purwanto, Agus and Okuyama, Kikuo and Saitoh, Terunobu and Takeuchi, Kazutaka (2012) Decolorization of beads-milled TiO2 nanoparticles suspension in an organic solvent. Advanced Powder Technology, 23 (1). pp. 55-63.

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    Abstract

    In this paper, a new method is proposed for the decolorization of a yellow-hued suspension of rutile TiO2 nanoparticles in an organic solvent (diethylene glycol dimethylether). The presence of color has always been undesirable in a suspension of nanoparticles filler used for industrial needs, particularly for optical applications. A colorless suspension was achieved by irradiating well-dispersed TiO2 nanoparticles in an organic solvent with UV-light (λ = 254 nm) for 5 h. TiO2 nanoparticles of 1 and 5 wt.% were dispersed using a beads mill method. Trimethoxytrifluor(propyl) silane was used as a dispersant to achieve stability. The effect of the UV-light irradiation on the TiO2 nanosuspension was investigated by means of a Fourier transform nuclear magnetic resonance analyzer (FT-NMR). The dispersant was partially desorbed due to the interaction of UV light and the TiO2/dispersant complex. Thus, an enhanced transparency and the absence of color were obtained for well-dispersed TiO2 nanoparticles in an organic solvent.

    Item Type: Article
    Subjects: Q Science > Q Science (General)
    Q Science > QC Physics
    Q Science > QD Chemistry
    Divisions: Lembaga Penelitian dan Pengabdian Kepada Masyarakat - LPPM
    Depositing User: Anis Fagustina
    Date Deposited: 04 May 2014 01:02
    Last Modified: 04 May 2014 01:02
    URI: https://eprints.uns.ac.id/id/eprint/14836

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