کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1277188 | 1497568 | 2012 | 7 صفحه PDF | دانلود رایگان |
A series of Mn2+ doped CdS photocatalysts were prepared by a co-precipitation method and characterized by XRD, DRS, TEM, and XPS techniques. While the band gap, crystal phase and the morphology of CdS nanocrystal were not found to be affected noticeably by Mn2+ doping, there was an optimal Mn2+ doping content of wt 0.5% where the hydrogen production was more than doubled compared to pure CdS. Calculations of density functional theory (DFT) with plane waves and pseudopotentials were used to characterize the doping effect of Mn in cubic CdS. It is assumed that Mn2+ serving as shallow trapping sites can separate e−/h+ pairs at surface of nanosized CdS, so as to greatly reduce their surface recombination and which in turn leads to improved hydrogen yield.
► Co-precipitating synthesis of mesoporous Mn doped CdS photocatalysts.
► Enhanced Photocatalytic activity on CdS by dopping Mn2+.
► Mn2+ in CdS induces shallow energy level certified by band calculation.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 1, January 2012, Pages 730–736