Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation
Based on BiOBr, an Ag/BiOBr/GO composite catalyst was constructed by doping the noble-metal Ag and the non-metal GO. A Xenon lamp was used to simulate a source of visible light, and Rhodamine B was used as target pollutant. The catalytic activity of the novel catalyst was investigated via degradatio...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419311524 |
| _version_ | 1818293298910986240 |
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| author | Chenyang Li Boqiang Wang Fengjun Zhang Ningning Song Gang Liu Cong Wang Shuang Zhong |
| author_facet | Chenyang Li Boqiang Wang Fengjun Zhang Ningning Song Gang Liu Cong Wang Shuang Zhong |
| author_sort | Chenyang Li |
| collection | DOAJ |
| description | Based on BiOBr, an Ag/BiOBr/GO composite catalyst was constructed by doping the noble-metal Ag and the non-metal GO. A Xenon lamp was used to simulate a source of visible light, and Rhodamine B was used as target pollutant. The catalytic activity of the novel catalyst was investigated via degradation experiment. The catalysts were characterized and analyzed by XRD, SEM, TEM, XPS, FT-IR, UV vis-DRS, and EIS. Compared with BiOBr, Ag/BiOBr, and GO/BiOBr, the prepared Ag/BiOBr/GO catalyst (doped with 2.0 wt.% GO and 1.5 wt.% Ag) exhibited the highest photocatalytic activity, with a RhB degradation rate of up to 98% within 120 min. Adding the metal Ag and GO significantly improved the photocatalytic activity of the BiOBr catalyst. This is a result of the Schottky barrier, surface plasmon resonance, and good electrical conductivity of the metal Ag as well as the large specific surface area and excellent electron transport efficiency of the non-metal GO. Their combination promoted the transfer and separation of photo-generated carriers of catalyst, and effectively limited the recombination rate of the photogenerated electron–hole. In a subsequent repeatability experiment, the catalysts still showed good photocatalytic activity and stability after five times of reuse, indicating that the composite catalyst has good stability and reusability value. Keywords: BiOBr, Ag, GO, Photocatalyst, Water treatment |
| first_indexed | 2024-12-13T03:13:38Z |
| format | Article |
| id | doaj.art-531d9e65f8cc4bd4b6d4d3e40b6fc211 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-13T03:13:38Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-531d9e65f8cc4bd4b6d4d3e40b6fc2112022-12-22T00:01:32ZengElsevierJournal of Materials Research and Technology2238-78542020-01-0191610621Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradationChenyang Li0Boqiang Wang1Fengjun Zhang2Ningning Song3Gang Liu4Cong Wang5Shuang Zhong6Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, PR China; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, PR ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, PR China; China Northeast Municipal Engineering Design and Research Institute Co., Ltd, Changchun 130000, PR ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, PR ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, PR ChinaJilin Province Shi Ze Environmental Protection Technology Co., Ltd, Changchun 130000, PR ChinaChina Northeast Municipal Engineering Design and Research Institute Co., Ltd, Changchun 130000, PR ChinaKey Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, PR China; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, PR China; Corresponding author.Based on BiOBr, an Ag/BiOBr/GO composite catalyst was constructed by doping the noble-metal Ag and the non-metal GO. A Xenon lamp was used to simulate a source of visible light, and Rhodamine B was used as target pollutant. The catalytic activity of the novel catalyst was investigated via degradation experiment. The catalysts were characterized and analyzed by XRD, SEM, TEM, XPS, FT-IR, UV vis-DRS, and EIS. Compared with BiOBr, Ag/BiOBr, and GO/BiOBr, the prepared Ag/BiOBr/GO catalyst (doped with 2.0 wt.% GO and 1.5 wt.% Ag) exhibited the highest photocatalytic activity, with a RhB degradation rate of up to 98% within 120 min. Adding the metal Ag and GO significantly improved the photocatalytic activity of the BiOBr catalyst. This is a result of the Schottky barrier, surface plasmon resonance, and good electrical conductivity of the metal Ag as well as the large specific surface area and excellent electron transport efficiency of the non-metal GO. Their combination promoted the transfer and separation of photo-generated carriers of catalyst, and effectively limited the recombination rate of the photogenerated electron–hole. In a subsequent repeatability experiment, the catalysts still showed good photocatalytic activity and stability after five times of reuse, indicating that the composite catalyst has good stability and reusability value. Keywords: BiOBr, Ag, GO, Photocatalyst, Water treatmenthttp://www.sciencedirect.com/science/article/pii/S2238785419311524 |
| spellingShingle | Chenyang Li Boqiang Wang Fengjun Zhang Ningning Song Gang Liu Cong Wang Shuang Zhong Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation Journal of Materials Research and Technology |
| title | Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation |
| title_full | Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation |
| title_fullStr | Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation |
| title_full_unstemmed | Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation |
| title_short | Performance of Ag/BiOBr/GO composite photocatalyst for visible-light-driven dye pollutants degradation |
| title_sort | performance of ag biobr go composite photocatalyst for visible light driven dye pollutants degradation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785419311524 |
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