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首页> 外文会议>International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion >Photocatalytic Hydrogen Generation by Alkaline-Earth Metal Ions Doped TiO_2
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Photocatalytic Hydrogen Generation by Alkaline-Earth Metal Ions Doped TiO_2

机译：碱土金属掺杂TiO_2光催化制氢

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摘要

TiO_2 photocatalysts doped with alkaline-earth metal ions were prepared by impregnation and coprecipitation method. The samples were characterized by XRD, XPS, IR and UV-Vis. Their activities were evaluated by photocatalytic hydrogen production. It was found that the photocatalytic activities depend on the size of the doped ion and doping method. The optimum molar content of doped Be~(2+), Mg~(2+), Ca~(2+), Sr~(2+), Ba~(2+) was 1.25 at.%, 1.25 at.%, 2.25 at.%, 2.25 at.% and 2.25 at.%, respectively. The optimum calcinated temperature and time were 400 °C and lh, respectively.
机译：采用浸渍共沉淀法制备了碱土金属离子掺杂的TiO_2光催化剂。通过XRD，XPS，IR和UV-Vis对样品进行表征。通过光催化制氢评价其活性。发现光催化活性取决于掺杂离子的大小和掺杂方法。掺杂的Be〜（2 +），Mg〜（2 +），Ca〜（2 +），Sr〜（2 +），Ba〜（2+）的最佳摩尔含量为1.25 at。％，1.25 at。％分别为2.25 at。％，2.25 at。％和2.25 at。％。最佳煅烧温度和时间分别为400°C和1h。

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