Anatase/rutile TiO2 nanorods composites were prepared by a facile hydrothermal method follow ed by dip coating method using titanium isopropoxide in acetic acid and ethanol solvent. The effects of the titanium isopropoxide precursor concentration, on the form ation of dip coated anatase/rutile TiO2 nanorods composite were systematically explored. The growth of anatase on rutile TiO2 nanorods can be controlled by varying the titanium isopropoxide concentration. The morphological study reveals that anatase TiO2 nanograins formed on the surface of rutile TiO2 nanorod arrays through dip coating method. Photoelectrochemical analyses showed that the enhancement of the photocatalytic activities of the samples is affected by the anatase nanograins present on the rutile TiO2 nanorods, which can induce the separation of electrons and holes. To interpret the photoelectrochem ical behaviors, the prepared photoelectrodes w ere applied in photoelectrochemical solar hydrogen generation and orange II dye degradation. The optimized photocurrent density of 1.8 mAcm(-2) and the 625 mu mol hydrogen generation was observed for 10 mM anatase/rutile TiO2 NRs composites. Additionally, 96% rem oval of the orange II dye was achieved within 5h during oxidative degradation under solar light irradiation. One of the benefits of high specific surface area and the efficient photogenerated charge transport in the anatase/rutile TiO2 nanorod composite improves the photoelectrochemical hydrogen generation and orange dye degradation compared to the rutile TiO2. Thus, our strategy provides a promising, stable, and lo w cost alternative to existing photocatalysts and is expected to attract considerable attention for industrial applications. (C) 2017 Elsevier B.V. All rights reserved.