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首页> 外文期刊>RSC Advances >Flower-like hydrogen titanate nanosheets: preparation, characterization and their photocatalytic hydrogen production performance in the presence of Pt cocatalyst
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Flower-like hydrogen titanate nanosheets: preparation, characterization and their photocatalytic hydrogen production performance in the presence of Pt cocatalyst

机译：花朵氢钛酸盐纳米液：在Pt Cocatalyst存在下制备，表征及其光催化氢气生产性能

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摘要

Flower-like hydrogen titanate nanosheets were prepared by a hydrothermal method and an assembling process. Then the Pt nanoparticles as cocatalysts were supported on the hydrogen titanate nanosheets through a photoreduction method. The samples were characterized by XRD, TG-DTA, ICP, SEM, TEM, XPS and UV-vis DRS. Their photocatalytic activity for H _(2) production was also evaluated. The TEM results revealed that the as-prepared H _(2) Ti _(2) O _(5) ·H _(2) O was with flower-like structure in which nanosheets were interlaced together. The formation mechanism of flower-like H _(2) Ti _(2) O _(5) ·H _(2) O nanosheets was briefly proposed. With Pt cocatalyst, the flower-like H _(2) Ti _(2) O _(5) ·H _(2) O had better photocatalytic activity (hydrogen production rate: 9.28 mmol g ~(?1) h ~(?1) ) and good cycling stability than original H _(2) Ti _(2) O _(5) ·H _(2) O and commercial P25 under the same conditions. It was also found that the amount of cocatalyst Pt was positively correlated with photocatalytic performance.
机译：通过水热法和组装工艺制备花样的氢钛酸酯纳米片。然后通过光电控制方法将Pt纳米颗粒作为助催化剂负载在钛酸盐纳米片上。样品的特征在于XRD，TG-DTA，ICP，SEM，TEM，XPS和UV-VIS DRS。还评估了它们的H_（2）生产的光催化活性。 TEM结果表明，AS制备的H _（2）TI _（2）O _（5）·H _（2）O是用花状结构，其中纳米晶片相互界面。简要提出了花样H _（2）Ti _（2）O _（5）·H _（2）o an anosope o o an o an o an o an an的形成机制。用pt助催化剂，花样H _（2）Ti _（2）o _（5）·h _（2）o具有更好的光催化活性（氢气生产率：9.28mmol g〜（？1）H〜（ ？1）））和良好的循环稳定性而不是原始H _（2）Ti _（2）O _（5）·H _（2）O和商业P25在相同条件下。还发现助催化剂Pt的量与光催化性能正相关。

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