In-situ construction of all-solid-state Z-scheme g-C3N4/TiO2 nanotube arrays photocatalyst with enhanced visible-light-induced properties

All-solid-state Z-scheme photocatalytic system, especially driven by visible light, has attracted intensive interests for realizing sustainable development addressing the increasing environmental pollution and energy issues. Titanium dioxide (TiO2) as one of the most studied semiconductor photocatalysts has been widely applied in solving the above issues. And graphitic carbon nitride (g-C3N4) is a steady and earth abundant non-metallic visible-light photocatalyst. Here we demonstrate a facile and rapid method to successfully synthesize all-solid-state Z-scheme g-C3N4/TiO2 nanotube arrays which demonstrates enhanced photocatalytic performance than photocatalyst prepared by traditional post-synthesis under visible light irradiation. (C) 2016 Elsevier B.V. All rights reserved.