rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
1-3
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pubmed:dateCreated |
2006-5-22
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pubmed:abstractText |
A photocatalyst was prepared by attaching TiO(2) powder (diameter, 50nm) in the sol state to fluidizing spherical ceramic carriers using a silicon binder. A high initial photocatalytic activity and strong attachment was obtained at a sintering temperature of 500 degrees C. An azo-dye (Orange-G) was used as the test contaminant to examine the photocatalytic effect of the new photocatalyst. The initial pseudo-first order degradation rate constant for Orange-G was 0.11min(-1). However, the photocatalytic activity doubled when boric acid was added to the silicon binder at a B to Si ratio of 106.5%. When sodium ethoxide was added to the silicon binder at a sodium ion to Si ratio of 15.0%, as much as 80% of the initial photocatalytic activity was maintained after the photocatalyst had been agitated at 180rpm for 300min. Adding both boric acid at a B/Si ratio of 106.5% and sodium ethoxide at a Na/Si ratio of 15% increased the photocatalytic activity and stability by three and four times, respectively.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0304-3894
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
30
|
pubmed:volume |
134
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
230-6
|
pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:16359789-Azo Compounds,
pubmed-meshheading:16359789-Boric Acids,
pubmed-meshheading:16359789-Catalysis,
pubmed-meshheading:16359789-Ceramics,
pubmed-meshheading:16359789-Chemistry, Physical,
pubmed-meshheading:16359789-Ethanol,
pubmed-meshheading:16359789-Immobilization,
pubmed-meshheading:16359789-Kinetics,
pubmed-meshheading:16359789-Microscopy, Electron, Scanning,
pubmed-meshheading:16359789-Molecular Structure,
pubmed-meshheading:16359789-Physicochemical Phenomena,
pubmed-meshheading:16359789-Temperature,
pubmed-meshheading:16359789-Titanium,
pubmed-meshheading:16359789-X-Ray Diffraction
|
pubmed:year |
2006
|
pubmed:articleTitle |
Novel immobilization of titanium dioxide (TiO2) on the fluidizing carrier and its application to the degradation of azo-dye.
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pubmed:affiliation |
Korea Research Institute of Chemical Technology, Korea.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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