RETRACTED: Investigation on photocatalytic degradation of ethyl violet dyestuff using visible light in the presence of ordinary rutile TiO2 catalyst doped with upconversion luminescence agent.
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).

This article has been retracted at the request of the Editor-in-Chief.

After careful investigations the editors have found that information in the paper is not reliable. Figure 4 appears similar to Figure 2 from another publication of the same authors in Dyes and Pigments 75 (2007) 335-343 https://doi.org/10.1016/j.dyepig.2006.06.007 which it is not describing the particles discussed in this Water Research paper. Although this article was published earlier than the Dyes and Pigments article, the Editor decided to retract this article given concerns about the reliability of the data.
Wang
Jun
J
Department of Chemistry, Liaoning University, Shenyang 110036, PR China. wangjun890@126.com
Zhang
Guan
G
Zhang
Zhaohong
Z
Zhang
Xiangdong
X
Zhao
Gang
G
Wen
Fuyu
F
Pan
Zhijun
Z
Li
Ying
Y
Zhang
Peng
P
Kang
Pingli
P
D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D049408:Luminescent Agents / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D046529:Microscopy, Electron, Transmission; D010777:Photochemistry; D012394:Rosaniline Dyes / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014961:X-Ray Diffraction
D004396:Coloring Agents; D049408:Luminescent Agents; D012394:Rosaniline Dyes; C009495:titanium dioxide; C034887:ethyl violet; D014025:Titanium