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Powders, Nanoparticles and Colloidal Dispersions
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Message Icon Topic: Color of TiO2 sols Post Reply Post New Topic
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pawell
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Quote pawell Replybullet Topic: Color of TiO2 sols
    Posted: 13 May 2008 at 12:31pm
Hi group!
I have been working on a new synthetic approach for titania nanoparticles and so far the protocol seems to be working (I have only performed DLS measurments so far) but there is one inconsistency:
Some sols (I keep the nanoparticles suspended) have a whitish-yellowish color with a blue tinge and some are milky blue.  Do you know why some of them are yellowish and some are not?  I am suspecting either  the size of the particles or the crystalline state, but i could not really find  the  answer in the  literature.  Any help or  suggestions will  be  highly appreciated. 
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