Light harvesting and charge separation are both significant to the photocatalysis, but it is challenging to synchronously realize both in a single-component material. The surface coarsened TiO2 nanobelts with TiO2(B)/anatase hetrophase junctions and large BET surface area are prepared via a hydrothermal/annealing method. The presence of surface coarsened nanobelt structure enhances the light absorption through reflection/refraction of light. The TiO2(B)/anatase hetrophase junctions can efficiently promote the separation of photoinduced electrons and holes pairs and therefore decrease the charge recombination. The large BET surface area provides abundant active sites for the absorption and diffusion of reactants. As a consequence, the obtained TiO2 nanobelts exhibit an enhanced photocatalytic H-2 evolution activity at the optimal annealing temperature (450 degrees C) with Pt as co- catalysts (0.786 mmol h(-1)g(-1)), exceeding that of pure anatase TiO2 nanobelts (TiO2 nano- belts-600 degrees C, 0.265 mmol h(-1)g(-1))Interestingly, TiO2 nanobelts-450 degrees C still show a high hydrogen evolution rate of 0.601 mmol h(-1)g(-1) in the absence of co-catalysts. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.