化工儀器網(wǎng)
資料下載
測量應用案例-20200405
閱讀：171 發(fā)布時間：2020-4-21| 提 供 商 | 美國布魯克海文儀器公司 | 資料大小 | 2.3MB |
|---|---|---|---|
| 資料圖片 | 下載次數(shù) | 56次 | |
| 資料類型 | PDF 文件 | 瀏覽次數(shù) | 171次 |
| 免費下載 | 點擊下載 |
作者： Andrei Lebedeva, Franklin Anaribaa,b, Xu Lic, Ping Wua
a Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, Singapore
b Materials Surface Group, Science and Math, Affiliated to Engineering Product Development, Singapore University of Technology and Design, Singapore
c A-Star, Institute of Materials Research and Engineering (IMRE), Singapore
摘要：By employing a rational design approach of matching redox potentials of dye, catalysts, and reactive oxygen species (ROS), Ag-BiVO4 photo-catalysts of 2, 5 and 7?wt% Ag were successfully prepared via sol-gel and UV photo-reduction methods. The as-prepared composites over-perform existing counterparts by exhibiting excellent photocatalytic properties towards degradation of cationic methylene blue (MB, 20?min, 90.9?±?2.4 %), brilliant green (BG, 20?min, 84.0?±?2.7 %) and rhodamine B (RhB, 120?min, 90.5?±?3.3 %) as well as anionic acid red 1 (AR, 60?min, 79.0?±?2.5 %) and methyl orange (MO, 120?min, 64.9?±?2.0 %) dyes. Furthermore, based on our novel approach of rational design, the degradation of MB dye was ascribed to photoelectrons from n-type BiVO4, while degradation of MO and AR was attributed to photo-holes from p-type Ag2O. Meanwhile, BG and RhB dyes degrade due to photoelectrons and photo-oxidation by ROS, which was confirmed by carrier scavenger experiments. Results indicate that Ag-BiVO4 oxide can be efficiently used for wastewater treatment, solar energy, water splitting, and medicine.