DocumentCode
3338945
Title
Notice of Retraction
Preparation of Amphiphilic Silica-Covered TiO2 Hollow Microspheres and Its Activity for Mythlene Blue Degradation
Author
Zhanying Ma ; Binghua Yao ; Min Liu ; Cheng Wang ; Weixia Xu ; Ruili Yang
Author_Institution
Dept. of Appl. Chem., Xi ´an Univ. of Technol., 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.
SiO2-void-TiO2 microspheres were successfully prepared by first polymerization of furfuryldehyde and precipitation of silica, and then the mid-layer of polyfurfuryldehyde was removed to create a nanovoid layer between a TiO2 core and silica shell. Then the surfaces of SiO2-void-TiO2 were modified by partial alkylsilylation of n-octadecyltrichlorosilane to render the SiO2-void-TiO2 surface amphiphilic. The as-prepared catalysts were characterized using XRD, HR-TEM, FT-IR and TG-DTA techniques. Results demonstrated that, as-prepared catalysts could be easily located at the boundary of the dual-phase organic-water mixture, due to the introduction of partial hydrophobicity. The photocatalytic experimental results indicated that amphiphilic SiO2-void-TiO2 could operate as an effective photacatalysts to decolorize the methylene blue solution. This new catalyst would promote effective commercial applications due to its more convenient recovery, compared to TiO2 catalysts.
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.
SiO2-void-TiO2 microspheres were successfully prepared by first polymerization of furfuryldehyde and precipitation of silica, and then the mid-layer of polyfurfuryldehyde was removed to create a nanovoid layer between a TiO2 core and silica shell. Then the surfaces of SiO2-void-TiO2 were modified by partial alkylsilylation of n-octadecyltrichlorosilane to render the SiO2-void-TiO2 surface amphiphilic. The as-prepared catalysts were characterized using XRD, HR-TEM, FT-IR and TG-DTA techniques. Results demonstrated that, as-prepared catalysts could be easily located at the boundary of the dual-phase organic-water mixture, due to the introduction of partial hydrophobicity. The photocatalytic experimental results indicated that amphiphilic SiO2-void-TiO2 could operate as an effective photacatalysts to decolorize the methylene blue solution. This new catalyst would promote effective commercial applications due to its more convenient recovery, compared to TiO2 catalysts.
Keywords
X-ray diffraction; catalysts; differential thermal analysis; environmental degradation; hydrophobicity; photochemistry; polymerisation; silicon compounds; titanium compounds; transmission electron microscopy; FT-IR; HR-TEM; SiO2; TG-DTA techniques; TiO2; XRD; alkylsilylation; amphiphilic silica-covered TiO2 hollow microspheres; as-prepared catalysts; dual-phase organic-water mixture; furfuryldehyde polymerization; hydrophobicity; methylene blue solution; mythlene blue degradation; n-octadecyltrichlorosilane; photacatalysts; polyfurfuryldehyde; silica precipitation; silica shell; surface amphiphilic; Chemicals; Degradation; Nanoparticles; Phase frequency detector; Silicon compounds; Surface morphology; Surface treatment;
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.2011.5781170
Filename
5781170
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