Soft solution synthesis of a zinc oxide nano-screw superstructure and its composite with nitrogen-doped titania

Novel zinc oxide thin films with nano-screw superstructure were prepared via a soft solution route without any polymer additives. A ZnO thin film could be produced directly on the substrates. The ZnO thin film with nano-screw superstructure was prepared using visible-light-induced nitrogen-doped titania nano-particles. The ZnO nano-screw/TiO2-xNy composite film showed excellent photocatalytic deNO(x) ability and quantum efficient.