| TiO2 nanopowder co-doped with iodine and boron to enhance visible-light photocatalytic activity. | |
| | |
MedLine Citation:
|
PMID: 20201427 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
An iodine and boron co-doped TiO2 photocatalyst was prepared by the hydrolyzation-precipitation method. X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS) were applied to characterize the crystalline structure, light absorbing ability, and the chemical state of iodine and boron in the photocatalysts. The results of photocatalytic degradation of methyl orange demonstrated that the I-B-TiO2 catalyst prepared at 400 degrees C for 3 h exhibited the highest photocatalytic activity with a methyl orange degradation ratio of 61% under visible-light (lambda > or = 420 nm) irradiation for 120 min. The characterization results revealed that I-B-TiO2 is in conformity with the anatase TiO2 and that the doping of iodine and boron ions could efficiently inhibit the grain growth. Doped iodine was present in the multivalent forms of 17+, I- and I5+. Doped boron was present as B3+ in an as-prepared sample, forming a possible chemical environment such as B-O-Ti. Overall, the doping of I and B enhanced the ability of TiO2 to absorb visible-light, and it was observed that the photocatalytic activity of I-B-TiO2 was enhanced by the synergistic effect of I and B. |
| | |
Authors:
|
Jianqiang Ding; Yali Yuan; Jinsheng Xu; Jian Deng; Jianbo Guo |
Related Documents
:
|
17229117 - Sensitivity of oral bacteria to 254 nm ultraviolet light. 11452117 - Visible-light photocatalysis in nitrogen-doped titanium oxides. 20466067 - Ultraviolet radiation-induced genotoxic effects in the broad-snouted caiman, caiman lat... 17110917 - Retinal pigment epithelium cell damage by a2-e and its photo-derivatives. 7987427 - Foreperiod duration, range, and ordering effects on acoustic lrt in normal speakers. 7964527 - Spatial attention and the apprehension of spatial relations. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of biomedical nanotechnology Volume: 5 ISSN: 1550-7033 ISO Abbreviation: J Biomed Nanotechnol Publication Date: 2009 Oct |
Date Detail:
|
Created Date: 2010-03-05 Completed Date: 2010-04-09 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101230869 Medline TA: J Biomed Nanotechnol Country: United States |
Other Details:
|
Languages: eng Pagination: 521-7 Citation Subset: IM |
Affiliation:
|
School of Public Health, University of South China, Hengyang 421001, RP China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Boron
/
chemistry*,
radiation effects Catalysis Crystallization / methods* Iodine / chemistry*, radiation effects Light Macromolecular Substances / chemistry Materials Testing Molecular Conformation Nanomedicine / methods* Nanostructures / chemistry*, radiation effects, ultrastructure* Particle Size Photochemistry / methods Powders Radiation Dosage Surface Properties Titanium / chemistry*, radiation effects |
| Chemical | |
Reg. No./Substance:
|
0/Macromolecular Substances; 0/Powders; 13463-67-7/titanium dioxide; 7440-32-6/Titanium; 7440-42-8/Boron; 7553-56-2/Iodine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Assembly and simple demonstration of a micropump installing PDMS-based thin membranes as flexible mi...
Next Document: Cell membrane injury induced by silica nanoparticles in mouse macrophage.