Ta2O5 hollow fibers composed of interconnected mesoporous nanotubes were fabricated by sol-gel method using polysulfone hollow fibers and P123 as the templates. Numerous mesopores were formed on the wall of the nanotubes after thermal treatment at 700 degrees C, and the shape of the polysulfone fiber was preserved. It exhibited larger specific surface area and produced higher photocatalytic hydrogen than other forms of Ta2O5 samples. In addition, although the specific surface area of the porous Ta2O5 hollow fiber was smaller than that of TiO2-P25, its hydrogen generation rate was 2.1 times higher, which might be ascribed to its higher conduction band minimum. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.