One-pot topotactic synthesis of Ti3+ self-doped 3D TiO2 hollow nanoboxes with enhanced visible light response

Ti3+ self-doped anatase TiO2 catalysts, with 3D hollow nanobox structure, were prepared via a template-engaged topological transformation process by a one-pot hydrothermal method. The introduction of Ti3+ and oxygen vacancies greatly enhanced the visible photocatalytic activity.