In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye
As a primary goal, The fast recombination of stimulated excitons and poor visible light response are key problems in the photocatalysis field. Combining with materials with good visible light responses to form heterogeneous structures is still the most effective way. In this study, BiOBr/UiO-66-NH2...
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| Format: | Article |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.994152/full |
| _version_ | 1798028352323321856 |
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| author | Shuna Feng Shuna Feng Zheng Yan Qianqian Ni Yun Zhang |
| author_facet | Shuna Feng Shuna Feng Zheng Yan Qianqian Ni Yun Zhang |
| author_sort | Shuna Feng |
| collection | DOAJ |
| description | As a primary goal, The fast recombination of stimulated excitons and poor visible light response are key problems in the photocatalysis field. Combining with materials with good visible light responses to form heterogeneous structures is still the most effective way. In this study, BiOBr/UiO-66-NH2 photocatalyst was synthesized by a simple method. BiOBr is a 3D spherical structure stacked by nanosheets, which enhance its adsorption capacity for pollutants and catalyze the dark reaction to reach the equilibrium point for too long. Coupling with UiO-66-NH2, its adsorption capacity was inhibited and the dark reaction time was shortened. The excellent removal rate of Rhodamine B (RhB) by BiOBr/UiO-66-NH2 reached 96.79% after 30 min of visible light irradiation and 99.37% after 90 min. With an increase in pollutant concentration, the composite still showed excellent photocatalytic performance. This study also tried to abandon the dark adsorption stage and directly degraded RhB efficiently and quickly under visible light. Finally, the photocatalytic enhancement mechanism was proposed. |
| first_indexed | 2024-04-11T19:06:29Z |
| format | Article |
| id | doaj.art-938f9d89b20d4170a9ff969cc44b4cba |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-04-11T19:06:29Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-938f9d89b20d4170a9ff969cc44b4cba2022-12-22T04:07:46ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-09-011010.3389/fenvs.2022.994152994152In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dyeShuna Feng0Shuna Feng1Zheng Yan2Qianqian Ni3Yun Zhang4Northeast Key Laboratory of Arable Land Conservation and Improvement, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, ChinaLiaoning Key Laboratory of Clean Energy and College of Energy and Environmental, Shenyang Aerospace University, Shenyang, ChinaLiaoning Key Laboratory of Clean Energy and College of Energy and Environmental, Shenyang Aerospace University, Shenyang, ChinaLiaoning Key Laboratory of Clean Energy and College of Energy and Environmental, Shenyang Aerospace University, Shenyang, ChinaNortheast Key Laboratory of Arable Land Conservation and Improvement, Ministry of Agriculture, College of Land and Environment, Shenyang Agricultural University, Shenyang, ChinaAs a primary goal, The fast recombination of stimulated excitons and poor visible light response are key problems in the photocatalysis field. Combining with materials with good visible light responses to form heterogeneous structures is still the most effective way. In this study, BiOBr/UiO-66-NH2 photocatalyst was synthesized by a simple method. BiOBr is a 3D spherical structure stacked by nanosheets, which enhance its adsorption capacity for pollutants and catalyze the dark reaction to reach the equilibrium point for too long. Coupling with UiO-66-NH2, its adsorption capacity was inhibited and the dark reaction time was shortened. The excellent removal rate of Rhodamine B (RhB) by BiOBr/UiO-66-NH2 reached 96.79% after 30 min of visible light irradiation and 99.37% after 90 min. With an increase in pollutant concentration, the composite still showed excellent photocatalytic performance. This study also tried to abandon the dark adsorption stage and directly degraded RhB efficiently and quickly under visible light. Finally, the photocatalytic enhancement mechanism was proposed.https://www.frontiersin.org/articles/10.3389/fenvs.2022.994152/fullBiOBr/UiO-66-NH2heterojunctionphotocatalysisrhodamine Bin-situ synthesis |
| spellingShingle | Shuna Feng Shuna Feng Zheng Yan Qianqian Ni Yun Zhang In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye Frontiers in Environmental Science BiOBr/UiO-66-NH2 heterojunction photocatalysis rhodamine B in-situ synthesis |
| title | In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye |
| title_full | In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye |
| title_fullStr | In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye |
| title_full_unstemmed | In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye |
| title_short | In-situ synthesis of 3D BiOBr/UiO-66-NH2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine B dye |
| title_sort | in situ synthesis of 3d biobr uio 66 nh2 heterojunction nanocomposite and its excellent photocatalytic degradation of rhodamine b dye |
| topic | BiOBr/UiO-66-NH2 heterojunction photocatalysis rhodamine B in-situ synthesis |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.994152/full |
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