Molten salt assisted synthesis of black titania hexagonal nanosheets with tuneable phase composition and morphology

摘要

A facile, high yield ZnCl2/KCl molten-salt route is developed to fabricate black titania hexagonal nanosheets under atmospheric pressure and low temperature (400 degrees C). After post-annealing, the black titania possesses a tunable phase composition and enhanced visible light photocatalytic activity, accompanied with a controllable morphology transformation from hexagonal nanosheets to nanorods.