کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1271046 | 1497552 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Efficient visible-light-driven photocatalytic H2 production over Cr/N-codoped SrTiO3 Efficient visible-light-driven photocatalytic H2 production over Cr/N-codoped SrTiO3](/preview/png/1271046.png)
Visible-light-response Cr/N-codoped SrTiO3 was prepared by a sol–gel hydrothermal method. The comparison studies indicate that Cr-doped and Cr/N-codoped SrTiO3 can be synthesized by this means, but not the N-doped SrTiO3. The theoretical calculations exhibit the defect formation energy of the Cr/N codoping into SrTiO3 is much smaller than that of the N doping into SrTiO3, illuminating that the incorporation of Cr can promote the N doping into the O sites in the SrTiO3. Compared to the Cr-doped SrTiO3, the Cr/N-codoped SrTiO3 photocatalyst shows the high photocatalytic activities for hydrogen production with the quantum efficiency of 3.1% at 420 nm, due to the smaller band gap and much less vacancy defects.
► Visible-light-response Cr/N-codoped SrTiO3 was prepared by a sol–gel hydrothermal method.
► The theoretical calculations exhibit that the incorporation of Cr can promote the N doping into the O sites in the SrTiO3.
► Cr/N-codoped SrTiO3 shows the high photocatalytic activities in H2 production and the quantum efficiency is 3.1% at 420 nm.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 17, September 2012, Pages 12120–12127