Ag/TiO2 nanofiber heterostructures: Highly enhanced photocatalysts under visible light
| العنوان: | Ag/TiO2 nanofiber heterostructures: Highly enhanced photocatalysts under visible light |
|---|---|
| المؤلفون: | Liang Xu, Lixin Liu, Yuan Wang, Chuanmin Meng, Wenjun Zhu |
| المصدر: | Journal of Applied Physics. 113:174311 |
| بيانات النشر: | AIP Publishing, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Materials science, Chemical engineering, Band gap, Nanofiber, Schottky barrier, Photocatalysis, General Physics and Astronomy, Nanoparticle, Heterojunction, Nanotechnology, Electrospinning, Visible spectrum |
| الوصف: | Photocatalysis of TiO2 has recently drawn considerable attention, while the photoefficiency of TiO2 is limited by its large band-gap energy and usually fast electron-hole recombination. Here, we present an unconventional heterostructure of Ag nanoparticles modified TiO2 nanofibers synthesized by one-step electrospinning process, to improve the photoefficiency of TiO2 host. The efficient promotion of the visible light photocatalysis of Ag/TiO2 nanofiber heterostructures can be ascribed to the electronic excitation of Ag nanoparticles under visible light and the transfer of the electrons to TiO2 conduction band, which deeply depends on the number of Ag/TiO2 junctions and the height of Schottky barrier. The Ag/Ti molar ratio can be easily controlled by the electrospinning process and the Ag/TiO2 nanofibers with Ag/Ti molar ratio of 0.05 exhibit the highest photocatalytic activity. Simultaneously, the Ag/TiO2 nanofiber heterostructures show excellent photocatalytic stability. |
| تدمد: | 1089-7550 0021-8979 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::b68ab04d644044a0d0e89f49758c8e86Test https://doi.org/10.1063/1.4803844Test |
| رقم الانضمام: | edsair.doi...........b68ab04d644044a0d0e89f49758c8e86 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897550 00218979 |
|---|