Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors
WO3-TiO2 composite materials were obtained using commercial titania (Evonik Aeroxide P25) and hydrothermally crystallized WO3. Different ratios of TiO2/WO3 were investigated, starting at 1 wt.% of WO3 to 50 wt.%. The morphology of WO3 was of the star-like type, and its structure is basically compose...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2018/6260458 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832568365922648064 |
|---|---|
| author | Biborka Boga István Székely Zsolt Pap Lucian Baia Monica Baia |
| author_facet | Biborka Boga István Székely Zsolt Pap Lucian Baia Monica Baia |
| author_sort | Biborka Boga |
| collection | DOAJ |
| description | WO3-TiO2 composite materials were obtained using commercial titania (Evonik Aeroxide P25) and hydrothermally crystallized WO3. Different ratios of TiO2/WO3 were investigated, starting at 1 wt.% of WO3 to 50 wt.%. The morphology of WO3 was of the star-like type, and its structure is basically composed of monoclinic crystalline phase. All spectroscopic characteristics of the composites and their derived data (band-gap energy value, light absorption threshold, and IR specific bands) directly varied with the increase of the WO3 content. However, the oxalic acid photodegradation achieved under UV light reached the highest yield for 24 wt.% WO3 content, a result that was attributed to the charge separation efficiency and the surface hydrophilicity. The latter mentioned reason points out the crucial importance of the surface quality of the investigated structure in photocatalytic tests. |
| format | Article |
| id | doaj-art-6b59b29a1aa64576a11ea42e12860aa1 |
| institution | Kabale University |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-6b59b29a1aa64576a11ea42e12860aa12025-02-03T00:59:16ZengWileyJournal of Spectroscopy2314-49202314-49392018-01-01201810.1155/2018/62604586260458Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite SemiconductorsBiborka Boga0István Székely1Zsolt Pap2Lucian Baia3Monica Baia4Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Arany János 11, Cluj-Napoca 400028, RomaniaNanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Treboniu Laurian 42, Cluj-Napoca 400271, RomaniaNanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Treboniu Laurian 42, Cluj-Napoca 400271, RomaniaNanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Treboniu Laurian 42, Cluj-Napoca 400271, RomaniaNanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Treboniu Laurian 42, Cluj-Napoca 400271, RomaniaWO3-TiO2 composite materials were obtained using commercial titania (Evonik Aeroxide P25) and hydrothermally crystallized WO3. Different ratios of TiO2/WO3 were investigated, starting at 1 wt.% of WO3 to 50 wt.%. The morphology of WO3 was of the star-like type, and its structure is basically composed of monoclinic crystalline phase. All spectroscopic characteristics of the composites and their derived data (band-gap energy value, light absorption threshold, and IR specific bands) directly varied with the increase of the WO3 content. However, the oxalic acid photodegradation achieved under UV light reached the highest yield for 24 wt.% WO3 content, a result that was attributed to the charge separation efficiency and the surface hydrophilicity. The latter mentioned reason points out the crucial importance of the surface quality of the investigated structure in photocatalytic tests.http://dx.doi.org/10.1155/2018/6260458 |
| spellingShingle | Biborka Boga István Székely Zsolt Pap Lucian Baia Monica Baia Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors Journal of Spectroscopy |
| title | Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors |
| title_full | Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors |
| title_fullStr | Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors |
| title_full_unstemmed | Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors |
| title_short | Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors |
| title_sort | detailed spectroscopic and structural analysis of tio2 wo3 composite semiconductors |
| url | http://dx.doi.org/10.1155/2018/6260458 |
| work_keys_str_mv | AT biborkaboga detailedspectroscopicandstructuralanalysisoftio2wo3compositesemiconductors AT istvanszekely detailedspectroscopicandstructuralanalysisoftio2wo3compositesemiconductors AT zsoltpap detailedspectroscopicandstructuralanalysisoftio2wo3compositesemiconductors AT lucianbaia detailedspectroscopicandstructuralanalysisoftio2wo3compositesemiconductors AT monicabaia detailedspectroscopicandstructuralanalysisoftio2wo3compositesemiconductors |