In this work,well-defined 1D/1D WO3 nanorod/TiO2 nanobelt (WNR/TNB) hybrid heterostructure was fabricated by a simple electrostatic self-assembly method.The structure-property correlation was clarified by characterizing the crystal phases,morphologies,optical properties,photoluminescence and photocatalytic performances of the WNR/TNB heterostructures.It was demonstrated that photocatalytic performances of WNR/TNB heterostructure toward mineralization was superior to blank TNB,WNR and randomly mixed counterparts under simulated solar light irradiation,owing predominantly to the intimate interfacial contact between WNR and TNB,forming intimately integrated heterojunction,which promotes the spatial charge carriers transfer and electron relay,hence prolonging the lifetime of photogenerated electron-hole pairs.Moreover,photocatalytic mechanism was elucidated.It is anticipated that our work would provide an altative strategy to construct diverse heterostructured photocatalysts for solar energy conversion.