Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst
Ti doped Bi2O3 (TDB) and Ag ion modified Ti doped Bi2O3 (Ag@TDB) photocatalysts were prepared by framework replacement synthesis method with different Ag loadings (0.05, 0.3, 0.75, and 1.0 mol/L AgNO3). The structural properties of the prepared catalysts were studied by scanning electron microscope...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/749354 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551311242952704 |
|---|---|
| author | Lilan Zhang Junfeng Niu Duo Li Ding Gao Jianghong Shi |
| author_facet | Lilan Zhang Junfeng Niu Duo Li Ding Gao Jianghong Shi |
| author_sort | Lilan Zhang |
| collection | DOAJ |
| description | Ti doped Bi2O3 (TDB) and Ag ion modified Ti doped Bi2O3 (Ag@TDB) photocatalysts were prepared by framework replacement synthesis method with different Ag loadings (0.05, 0.3, 0.75, and 1.0 mol/L AgNO3). The structural properties of the prepared catalysts were studied by scanning electron microscope (SEM), X-ray diffraction (XRD), BET surface area, and UV/Vis diffuse reflectance (DRS). The XRD spectra of the Ti doped Bi2O3 calcined at 650°C showed the diffraction peaks of a mixture of Bi12TiO20 and Bi4Ti3O12, with bits of mixed crystallite consisting of TiO2 and B2O3. A high blue shift in the range 650–550 nm was detected in the DRS band. This blue shift increased with the decreasing Ag content. The photocatalytic activities of the catalysts were evaluated for the degradation of crystal violet (CV) under UV light irradiation. The results indicated that the degradation rate of CV by using 1.0 mol/L AgNO3 doped bismuth titanate composite photocatalyst (1.0 Ag@TDB) was 1.9 times higher than that by using the bare Ti doped Bi2O3 photocatalyst. The higher activity of Ag@TDB is due to the enhancement of electron-hole pair separation by the electron trapping of silver particles. |
| format | Article |
| id | doaj-art-40aaa0af4d264bc69c8f90a822b756e9 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-40aaa0af4d264bc69c8f90a822b756e92025-02-03T06:01:43ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242014-01-01201410.1155/2014/749354749354Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 PhotocatalystLilan Zhang0Junfeng Niu1Duo Li2Ding Gao3Jianghong Shi4State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, ChinaTi doped Bi2O3 (TDB) and Ag ion modified Ti doped Bi2O3 (Ag@TDB) photocatalysts were prepared by framework replacement synthesis method with different Ag loadings (0.05, 0.3, 0.75, and 1.0 mol/L AgNO3). The structural properties of the prepared catalysts were studied by scanning electron microscope (SEM), X-ray diffraction (XRD), BET surface area, and UV/Vis diffuse reflectance (DRS). The XRD spectra of the Ti doped Bi2O3 calcined at 650°C showed the diffraction peaks of a mixture of Bi12TiO20 and Bi4Ti3O12, with bits of mixed crystallite consisting of TiO2 and B2O3. A high blue shift in the range 650–550 nm was detected in the DRS band. This blue shift increased with the decreasing Ag content. The photocatalytic activities of the catalysts were evaluated for the degradation of crystal violet (CV) under UV light irradiation. The results indicated that the degradation rate of CV by using 1.0 mol/L AgNO3 doped bismuth titanate composite photocatalyst (1.0 Ag@TDB) was 1.9 times higher than that by using the bare Ti doped Bi2O3 photocatalyst. The higher activity of Ag@TDB is due to the enhancement of electron-hole pair separation by the electron trapping of silver particles.http://dx.doi.org/10.1155/2014/749354 |
| spellingShingle | Lilan Zhang Junfeng Niu Duo Li Ding Gao Jianghong Shi Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst Advances in Condensed Matter Physics |
| title | Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst |
| title_full | Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst |
| title_fullStr | Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst |
| title_full_unstemmed | Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst |
| title_short | Preparation and Photocatalytic Activity of Ag Modified Ti-Doped-Bi2O3 Photocatalyst |
| title_sort | preparation and photocatalytic activity of ag modified ti doped bi2o3 photocatalyst |
| url | http://dx.doi.org/10.1155/2014/749354 |
| work_keys_str_mv | AT lilanzhang preparationandphotocatalyticactivityofagmodifiedtidopedbi2o3photocatalyst AT junfengniu preparationandphotocatalyticactivityofagmodifiedtidopedbi2o3photocatalyst AT duoli preparationandphotocatalyticactivityofagmodifiedtidopedbi2o3photocatalyst AT dinggao preparationandphotocatalyticactivityofagmodifiedtidopedbi2o3photocatalyst AT jianghongshi preparationandphotocatalyticactivityofagmodifiedtidopedbi2o3photocatalyst |