摘要
Ta 2 O 5 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 °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 Ta 2 O 5 samples. In addition, although the specific surface area of the porous Ta 2 O 5 hollow fiber was smaller than that of TiO 2 -P25, its hydrogen generation rate was 2.1 times higher, which might be ascribed to its higher conduction band minimum.