In Situ Wrapping of Oriented NaNbO3 with Carbon Nitride to Synergistically Enhance Photoelectrical Utilization at NaNbO3/g-C3N4 Heterostructures

Abstract

Synergetic effects were observed in oriented-NaNbO₃/g-C₃N₄ heterostructure system synthesized from in situ pyrolysis of urea with hydrothermally prepared NaNbO₃ microcuboids. Chemically wrapping NaNbO₃ with appropriate amount of g-C₃N₄ forms an efficient heterojunction which separates photoexcited charges and the internal electric field produced by oriented NaNbO₃ grains facilitates their transfer. The mechanism developed here is applicable to enhancing photoelectrical utilization in other perovskite systems.