Abstract
We have previously observed that amorphous Se crystallized into hexagonal Se or α-monoclinic Se, when exposed to various organic fluids at room temperature. Here we report the effects of coexistence of TiO 2 (rutile and anatase) on the crystallization of amorphous Se in various organic liquids (acetone, methanol and benzene). It was found that the presence of TiO 2 has a tendency to promote formation of hexagonal Se crystals under light, which is interpreted in terms of photocatalytic effects of TiO 2 inducing local electrostatic field around the Se particles.
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