Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation
In this manuscript, hollow flower-like ferric oxide/manganese dioxide/trimanganese tetraoxide (Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub>) magnetically separable microspheres were prepared by combining a simple...
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| Format: | Article |
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MDPI AG
2019-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/9/7/589 |
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| author | Mingliang Ma Yuying Yang Yan Chen Fei Wu Wenting Li Ping Lyu Yong Ma Weiqiang Tan Weibo Huang |
| author_facet | Mingliang Ma Yuying Yang Yan Chen Fei Wu Wenting Li Ping Lyu Yong Ma Weiqiang Tan Weibo Huang |
| author_sort | Mingliang Ma |
| collection | DOAJ |
| description | In this manuscript, hollow flower-like ferric oxide/manganese dioxide/trimanganese tetraoxide (Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub>) magnetically separable microspheres were prepared by combining a simple hydrothermal method and reduction method. As the MnO<sub>2</sub> nanoflower working as precursor was partially reduced, Mn<sub>3</sub>O<sub>4</sub> nanoparticles were in situ grown from the MnO<sub>2</sub> nanosheet. The composite microspheres were characterized in detail by employing scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer−Emmett−Teller (BET), vibration sample magnetometer (VSM) and UV−visible spectrophotometer (UV−vis). Under visible light conditions, the test for degrading rhodamine B (RhB) was used to verify the photocatalytic activity of the photocatalyst. The results showed that the efficiency of the Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> photocatalyst in visible light for 130 min is 94.5%. The catalytic activity of photocatalyst far exceeded that of the Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub> component, and after four cycles, the catalytic performance of the catalyst remained at 78.4%. The superior properties of the photocatalyst came from improved surface area, enhanced light absorption, and efficient charge separation of the MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> heterostructure. This study constructed a green and efficient valence heterostructure composite that created a promising photocatalyst for degrading organic contaminants in aqueous environments. |
| first_indexed | 2024-04-12T11:32:14Z |
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| id | doaj.art-7bcbd9f35a00411cb1dac9337b233e68 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-04-12T11:32:14Z |
| publishDate | 2019-07-01 |
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| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-7bcbd9f35a00411cb1dac9337b233e682022-12-22T03:34:59ZengMDPI AGCatalysts2073-43442019-07-019758910.3390/catal9070589catal9070589Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye DegradationMingliang Ma0Yuying Yang1Yan Chen2Fei Wu3Wenting Li4Ping Lyu5Yong Ma6Weiqiang Tan7Weibo Huang8School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaIn this manuscript, hollow flower-like ferric oxide/manganese dioxide/trimanganese tetraoxide (Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub>) magnetically separable microspheres were prepared by combining a simple hydrothermal method and reduction method. As the MnO<sub>2</sub> nanoflower working as precursor was partially reduced, Mn<sub>3</sub>O<sub>4</sub> nanoparticles were in situ grown from the MnO<sub>2</sub> nanosheet. The composite microspheres were characterized in detail by employing scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer−Emmett−Teller (BET), vibration sample magnetometer (VSM) and UV−visible spectrophotometer (UV−vis). Under visible light conditions, the test for degrading rhodamine B (RhB) was used to verify the photocatalytic activity of the photocatalyst. The results showed that the efficiency of the Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> photocatalyst in visible light for 130 min is 94.5%. The catalytic activity of photocatalyst far exceeded that of the Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub> component, and after four cycles, the catalytic performance of the catalyst remained at 78.4%. The superior properties of the photocatalyst came from improved surface area, enhanced light absorption, and efficient charge separation of the MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> heterostructure. This study constructed a green and efficient valence heterostructure composite that created a promising photocatalyst for degrading organic contaminants in aqueous environments.https://www.mdpi.com/2073-4344/9/7/589Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> photocatalysthollow flower-like structurevalence heterostructurevisible-light activityrecyclability |
| spellingShingle | Mingliang Ma Yuying Yang Yan Chen Fei Wu Wenting Li Ping Lyu Yong Ma Weiqiang Tan Weibo Huang Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation Catalysts Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> photocatalyst hollow flower-like structure valence heterostructure visible-light activity recyclability |
| title | Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation |
| title_full | Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation |
| title_fullStr | Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation |
| title_full_unstemmed | Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation |
| title_short | Synthesis of Hollow Flower-Like Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> Magnetically Separable Microspheres with Valence Heterostructure for Dye Degradation |
| title_sort | synthesis of hollow flower like fe sub 3 sub o sub 4 sub mno sub 2 sub mn sub 3 sub o sub 4 sub magnetically separable microspheres with valence heterostructure for dye degradation |
| topic | Fe<sub>3</sub>O<sub>4</sub>/MnO<sub>2</sub>/Mn<sub>3</sub>O<sub>4</sub> photocatalyst hollow flower-like structure valence heterostructure visible-light activity recyclability |
| url | https://www.mdpi.com/2073-4344/9/7/589 |
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