期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 206, 期 -, 页码 69-79出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2018.05.064
关键词
BiOBr:Yb3+,Er3+; g-C3N4; p-n junction; Visible-NIR light; Photocatalysis; Upconversion
资金
- Shandong Province Higher Educational Science and Technology Program [J15LA10]
- Shandong Provincial Natural Science Foundation, China [ZR2018MEM019]
- College Students' Innovation Foundation of Liaocheng University [26312161918]
The BiOBr:Yb3+,Er3+/g-C3N4 (BYE/CN) p-n junction photocatalysts were successfully fabricated by a stepwise method. Experimental results show that Er3+/Yb3+ were successfully doped into BiOBr lattice. As-obtained BYE/CN exhibited strong NIR light absorption and upconversion emission from NIR to UV-visible due to the upconversion transition of Er3+. The p-n junction was constructed due to the appropriate alignment band structure of BYE and g-C3N4, which distinctly suppresses the recombination rate of electron-hole pairs. Compared with pure BYE and CN, as-synthesized BYE/CN samples exhibit distinctly improved photoactivities under the irradiation of visible or NIR light, which can be attributed to the upconversion effect of Er3+ and the construction of p-n junction. This result may provides a promising system for efficient harvest of the NIR light, which will contribute to the utilization of solar energy in the future.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据