• decolorization of beads-milled tio2 nanoparticles suspension in an organic solvent

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1393/01/01
    • تاریخ انتشار در تی پی بین: 1393/01/01
    • تعداد بازدید: 599
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     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 tio2nanosuspension 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 tio2nanoparticles in an organic solvent.

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