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Synthesis of Yb3 +/Ho3 + co-doped Bi2WO6 upconversion photocatalyst with highly improved visible light photocatalytic activity.
- Source :
-
Catalysis Communications . Jul2017, Vol. 97, p60-64. 5p. - Publication Year :
- 2017
-
Abstract
- As a novel visible-light-driven photocatalyst, Yb 3 + /Ho 3 + co-doped Bi 2 WO 6 (Yb 3 + /Ho 3 + -Bi 2 WO 6 ) was synthesized via a simple hydrothermal method and subsequent a calcination process. The as-synthesized Yb 3 + /Ho 3 + -Bi 2 WO 6 samples were characterized by various analytical methods. The BIW-5 (Yb 3 + /Ho 3 + molar ratios is 5) sample showed the highest photocatalytic activity. The RhB was degraded (99.8%) under visible light irradiation in 20 min. The improved photocatalytic activity could be attributed to the efficient energy transfer between Yb 3 + /Ho 3 + and Bi 2 WO 6 via infrared to visible upconversion and the reduced combination rate of photogenerated electron-hole pairs through doping Yb 3 + /Ho 3 + ions. Therefore, this study may provide a better method to obtain stable upconversion photocatalyst with greatly improved activity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15667367
- Volume :
- 97
- Database :
- Academic Search Index
- Journal :
- Catalysis Communications
- Publication Type :
- Academic Journal
- Accession number :
- 122911360
- Full Text :
- https://doi.org/10.1016/j.catcom.2017.04.021