کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1283266 | 1497637 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photocatalytic activities of Sr2Ta2O7 nanosheets synthesized by a hydrothermal method Photocatalytic activities of Sr2Ta2O7 nanosheets synthesized by a hydrothermal method](/preview/png/1283266.png)
Sr2Ta2O7 nanosheets have been synthesized by a hydrothermal method without using any template. The thickness, widths, and lengths of Sr2Ta2O7 nanosheets are about 10–50 nm, 50–150 nm, and 500 nm, respectively. The optimum conditions for the formation of the nanosheets are maintaining the reactants at 260 °C for 7 days. On basis of the experimental data, a possible formation mechanism of the nanosheets under the hydrothermal conditions was proposed. The photocatalytic activity for water splitting was investigated under ultraviolet irradiation. It has been found that Sr2Ta2O7 nanosheets, compared to the bulk Sr2Ta2O7 sample, showed a higher photocatalytic activity even in the absence of a cocatalyst. The higher activity of the hydrothermally synthesized sample is attributed to its larger surface areas and nanoscale structure.
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 5, March 2009, Pages 2113–2120