Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance
The ZnS-Bi-TiO2 composites were prepared by the sol-gel method and were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible diffuse reflectance spectroscopy (UV-Vis DRS). It is found that the doped Bi as Bi4+/Bi3+ sp...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/503895 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832563823631925248 |
|---|---|
| author | Xuewei Dong Fan Zhang Chuan Rong Hongchao Ma |
| author_facet | Xuewei Dong Fan Zhang Chuan Rong Hongchao Ma |
| author_sort | Xuewei Dong |
| collection | DOAJ |
| description | The ZnS-Bi-TiO2 composites were prepared by the sol-gel method and were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible diffuse reflectance spectroscopy (UV-Vis DRS). It is found that the doped Bi as Bi4+/Bi3+ species existed in composites, and the introducing of ZnS enhanced further the light absorption ability of TiO2 in visible region and reduced the recombination of photogenerated electrons and holes. As compared to pure TiO2, the ZnS-Bi-TiO2 exhibited enhanced photodegradation efficiency under xenon lamp irradiation, and the kinetic constant of methyl orange removal with ZnS-Bi-Ti-0.005 (0.0141 min−1) was 3.9 times greater than that of pure TiO2 (0.0029 min−1), which could be attributed to the existence of Bi4+/Bi3+ species, the ZnS/TiO2 heterostructure. |
| format | Article |
| id | doaj-art-0bc0190b89014a2883c76ff4db0b99b4 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-0bc0190b89014a2883c76ff4db0b99b42025-02-03T01:12:23ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/503895503895Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic PerformanceXuewei Dong0Fan Zhang1Chuan Rong2Hongchao Ma3School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, ChinaSchool of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, ChinaSchool of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, ChinaSchool of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, ChinaThe ZnS-Bi-TiO2 composites were prepared by the sol-gel method and were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible diffuse reflectance spectroscopy (UV-Vis DRS). It is found that the doped Bi as Bi4+/Bi3+ species existed in composites, and the introducing of ZnS enhanced further the light absorption ability of TiO2 in visible region and reduced the recombination of photogenerated electrons and holes. As compared to pure TiO2, the ZnS-Bi-TiO2 exhibited enhanced photodegradation efficiency under xenon lamp irradiation, and the kinetic constant of methyl orange removal with ZnS-Bi-Ti-0.005 (0.0141 min−1) was 3.9 times greater than that of pure TiO2 (0.0029 min−1), which could be attributed to the existence of Bi4+/Bi3+ species, the ZnS/TiO2 heterostructure.http://dx.doi.org/10.1155/2014/503895 |
| spellingShingle | Xuewei Dong Fan Zhang Chuan Rong Hongchao Ma Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance The Scientific World Journal |
| title | Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance |
| title_full | Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance |
| title_fullStr | Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance |
| title_full_unstemmed | Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance |
| title_short | Fabrication of ZnS-Bi-TiO2 Composites and Investigation of Their Sunlight Photocatalytic Performance |
| title_sort | fabrication of zns bi tio2 composites and investigation of their sunlight photocatalytic performance |
| url | http://dx.doi.org/10.1155/2014/503895 |
| work_keys_str_mv | AT xueweidong fabricationofznsbitio2compositesandinvestigationoftheirsunlightphotocatalyticperformance AT fanzhang fabricationofznsbitio2compositesandinvestigationoftheirsunlightphotocatalyticperformance AT chuanrong fabricationofznsbitio2compositesandinvestigationoftheirsunlightphotocatalyticperformance AT hongchaoma fabricationofznsbitio2compositesandinvestigationoftheirsunlightphotocatalyticperformance |