Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets
Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> nanosheets were successfully synthesized using the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and UV-vis...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-05-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/9/5/735 |
| _version_ | 1819093254890586112 |
|---|---|
| author | Taiping Xie Jiao Hu Jun Yang Chenglun Liu Longjun Xu Jiankang Wang Yuan Peng Songli Liu Xiuyu Yin Yuanzhen Lu |
| author_facet | Taiping Xie Jiao Hu Jun Yang Chenglun Liu Longjun Xu Jiankang Wang Yuan Peng Songli Liu Xiuyu Yin Yuanzhen Lu |
| author_sort | Taiping Xie |
| collection | DOAJ |
| description | Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> nanosheets were successfully synthesized using the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and UV-visible diffused reflectance spectra (UV-DRS), and the magnetic properties were tested using a vibration sample magnetometer (VSM). The as-produced composite with an irregular flaky-shaped aggregate possesses a good anti-demagnetization ability (Hc = 861.04 G) and a high photocatalytic efficiency. Under visible light (λ > 420 nm) and UV light-emitting diode (LED) irradiation, the photodegradation rates of Rhodamine B (RhB) using BiOBr/SrFe<sub>12</sub>O<sub>19</sub> (5 wt %) (BOB/SFO-5) after 30 min of reaction were 97% and 98%, respectively, which were higher than that using BiOBr (87%). The degradation rate of RhB using the recovered BiOBr/5 wt % SrFe<sub>12</sub>O<sub>19</sub> (marked as BOB/SFO-5) was still more than 85% in the fifth cycle, indicating the high stability of the composite catalyst. Meanwhile, after five cycles, the magnetic properties were still as stable as before. The radical-capture experiments proved that superoxide radicals and holes were main active species in the photocatalytic degradation of RhB. |
| first_indexed | 2024-12-21T23:08:36Z |
| format | Article |
| id | doaj.art-48c1254af214415cb3c36055cb2a86ba |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-21T23:08:36Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-48c1254af214415cb3c36055cb2a86ba2022-12-21T18:47:06ZengMDPI AGNanomaterials2079-49912019-05-019573510.3390/nano9050735nano9050735Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> NanosheetsTaiping Xie0Jiao Hu1Jun Yang2Chenglun Liu3Longjun Xu4Jiankang Wang5Yuan Peng6Songli Liu7Xiuyu Yin8Yuanzhen Lu9State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaCollege of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, ChinaCollege of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaChongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM), Yangtze Normal University, Chongqing 408100, ChinaChongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM), Yangtze Normal University, Chongqing 408100, ChinaChongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM), Yangtze Normal University, Chongqing 408100, ChinaCollege of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, ChinaCollege of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, ChinaMagnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> nanosheets were successfully synthesized using the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and UV-visible diffused reflectance spectra (UV-DRS), and the magnetic properties were tested using a vibration sample magnetometer (VSM). The as-produced composite with an irregular flaky-shaped aggregate possesses a good anti-demagnetization ability (Hc = 861.04 G) and a high photocatalytic efficiency. Under visible light (λ > 420 nm) and UV light-emitting diode (LED) irradiation, the photodegradation rates of Rhodamine B (RhB) using BiOBr/SrFe<sub>12</sub>O<sub>19</sub> (5 wt %) (BOB/SFO-5) after 30 min of reaction were 97% and 98%, respectively, which were higher than that using BiOBr (87%). The degradation rate of RhB using the recovered BiOBr/5 wt % SrFe<sub>12</sub>O<sub>19</sub> (marked as BOB/SFO-5) was still more than 85% in the fifth cycle, indicating the high stability of the composite catalyst. Meanwhile, after five cycles, the magnetic properties were still as stable as before. The radical-capture experiments proved that superoxide radicals and holes were main active species in the photocatalytic degradation of RhB.https://www.mdpi.com/2079-4991/9/5/735BiOBr/SrFe<sub>12</sub>O<sub>19</sub>photocatalystRhodamine Bphotodegradation ratemagnetic photocatalyst |
| spellingShingle | Taiping Xie Jiao Hu Jun Yang Chenglun Liu Longjun Xu Jiankang Wang Yuan Peng Songli Liu Xiuyu Yin Yuanzhen Lu Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets Nanomaterials BiOBr/SrFe<sub>12</sub>O<sub>19</sub> photocatalyst Rhodamine B photodegradation rate magnetic photocatalyst |
| title | Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets |
| title_full | Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets |
| title_fullStr | Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets |
| title_full_unstemmed | Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets |
| title_short | Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe<sub>12</sub>O<sub>19</sub> Nanosheets |
| title_sort | visible light driven photocatalytic activity of magnetic biobr srfe sub 12 sub o sub 19 sub nanosheets |
| topic | BiOBr/SrFe<sub>12</sub>O<sub>19</sub> photocatalyst Rhodamine B photodegradation rate magnetic photocatalyst |
| url | https://www.mdpi.com/2079-4991/9/5/735 |
| work_keys_str_mv | AT taipingxie visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT jiaohu visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT junyang visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT chenglunliu visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT longjunxu visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT jiankangwang visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT yuanpeng visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT songliliu visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT xiuyuyin visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets AT yuanzhenlu visiblelightdrivenphotocatalyticactivityofmagneticbiobrsrfesub12subosub19subnanosheets |