Abstract
Although lithium tantalate (LiTaO3) has been applied as an electro-optic and piezoelectric material, reports on the control of its preparation on the nanoscale are rare. Recently, we reported the preparation of single-handed twisted tantalum pentoxide tubular nanoribbons. We prepare LiTaO3 tubular nanoribbons with optical activity using the tantalum pentoxide tubular nanoribbons as starting materials through an impregnation method in an aqueous solution of lithium hydroxide. Before calcination, both the morphology and optical activity were maintained. The optical activity was proposed to originate from chiral defects on the inner surfaces of the nanotubes. After calcination at 670°C for 2.0h, nanocrystals were formed. Moreover, both the morphology and optical activity were destroyed.
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