DocumentCode
3335365
Title
Notice of Retraction
The Photocatalytic Degradation of Methylene Blue in Wastewater by Nano-Structured Cr-Doped TiO2 under Low Power Visible-Light Irradiation
Author
Ying Hu ; Yutao Tang ; Xufeng Tang ; Heping Li ; Daquan Liu
Author_Institution
Sch. of Tech. Phys., Xidian Univ., Xi´an, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Through high-energy ball-milling technique, the nano structured TiO2 photocatalysts with Cr-doped series (0.1 wt%, 1 wt%, 1.5 wt%, 5 wt%) were synthesized. XRD results show the materials are poly-crystal with average grain sizes 20 nm and mixed phase TiO2 (the phase mole ratio of 80 % anatase to 20% rutile). Diffusion reflectance spectra show that Cr-doped to TiO2 produces some red shift of energy band for adsorbing some visible light. 1 wt% Cr-doped TiOι is the largest red shift of energy band in the experiment samples. The photocatalytic degradation of MB (methylene blue) results also show that 1 wt% Cr-doped TiO2 has the best properties under low power 40 watts office fluorescent light irradiation in the experiment samples due to the superiority condition of adsorbing the visible light. Hence, the nano-structured Cr-doped TiO2 photocatalysts for visible light irradiation will be applied to the organic degradation in wastewater treatment.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Through high-energy ball-milling technique, the nano structured TiO2 photocatalysts with Cr-doped series (0.1 wt%, 1 wt%, 1.5 wt%, 5 wt%) were synthesized. XRD results show the materials are poly-crystal with average grain sizes 20 nm and mixed phase TiO2 (the phase mole ratio of 80 % anatase to 20% rutile). Diffusion reflectance spectra show that Cr-doped to TiO2 produces some red shift of energy band for adsorbing some visible light. 1 wt% Cr-doped TiOι is the largest red shift of energy band in the experiment samples. The photocatalytic degradation of MB (methylene blue) results also show that 1 wt% Cr-doped TiO2 has the best properties under low power 40 watts office fluorescent light irradiation in the experiment samples due to the superiority condition of adsorbing the visible light. Hence, the nano-structured Cr-doped TiO2 photocatalysts for visible light irradiation will be applied to the organic degradation in wastewater treatment.
Keywords
ball milling; catalysis; chromium; diffusion; grain size; nanostructured materials; photochemistry; radiation effects; titanium compounds; wastewater treatment; XRD; diffusion reflectance spectra; energy band; fluorescent light irradiation; grain size; high-energy ball-milling technique; low power visible-light irradiation; methylene blue; nanostructured Cr-doped TiO2; organic degradation; photocatalyst; photocatalytic degradation; polycrystal; wastewater; Degradation; Grain size; Milling; Radiation effects; Temperature sensors; X-ray scattering;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5780959
Filename
5780959
Link To Document