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TiO 2 nanotube arrays (TiO 2 NTs) with an inner average pore diameter of 80-110 nm and a length of 40 lm were grown on titanium foils by electrochemical anodization in ammonium fluoride-water-ethylene glycol solution. ZnO was grafted on the TiO 2 nanotube arrays (ZnO/TiO 2 NTs) by a chemical bath deposition technique in combination with a pyrolysis process. ZnO/TiO 2 NTs composite supported on titanium substrate was used as the photoanode for photocatalytic water splitting. Photoelectrochemical characterization shows that grafted ZnO on TiO 2 NTs efficiently enhanced the photocatalytic water-splitting performance of highly ordered TiO 2 NT. Such photoanode benefits from the capability of high specific surface and the direct conduction path through the aligned nanotubes. Moreover, the heterojunction at the ZnO/TiO 2 interface favors charge separation and reduced the probability of charge recombination. This inexpensive photoanodes prepared free of noble metals, showed enhanced high photocurrent density with good stability, and is a highly promising photoanodes for visible light photocatalytic hydrogen production.