Abstract
We successfully synthesized the novel single crystal Ta2O5 nanowires for hydrogen production by facile one-step hydrolysis method. The as-prepared Ta2O5 photocatalysts displayed highly enhanced photocatalytic activities for hydrogen production, and the highest hydrogen production activity could reach up to ∼5.549mmol·g−1·h−1, which was 9.72-fold higher than that of the commercial Ta2O5. Besides, it was noticeable that the spectrum absorption edges of the Ta2O5 catalysts displayed an obvious red shift, and the single crystal Ta2O5 nanowires were also obtained with the increase of the hydrolysis temperatures. Besides, the estimated band gap of the as-prepared Ta2O5-160, Ta2O5-180, Ta2O5-200 and Ta2O5-220 catalysts were 4.20, 4.16, 4.09 and 3.83eV, respectively. And it could be concluded that the increase of the hydrolysis temperatures was contributing to improve the crystallinity and extend the spectrum response range of Ta2O5 catalyst in this experiment.
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