New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light
Uniform flowerlike microspheres Cd<sup>2+</sup>/Fe<sup>3+</sup> co-doped BiOBr were prepared with the aid of the microwave hydrothermal process. The results indicate that the degradation performance of Bi<sub>1−<i>x</i></sub>Cd<i><sub>x<...
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MDPI AG
2021-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/2/423 |
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| author | Hong Sheng Wei Wang Rong Dai Jing Ning Lei Zhang Qiao Wu Fuchun Zhang Junfeng Yan Weibin Zhang |
| author_facet | Hong Sheng Wei Wang Rong Dai Jing Ning Lei Zhang Qiao Wu Fuchun Zhang Junfeng Yan Weibin Zhang |
| author_sort | Hong Sheng |
| collection | DOAJ |
| description | Uniform flowerlike microspheres Cd<sup>2+</sup>/Fe<sup>3+</sup> co-doped BiOBr were prepared with the aid of the microwave hydrothermal process. The results indicate that the degradation performance of Bi<sub>1−<i>x</i></sub>Cd<i><sub>x</sub></i>OBr and Bi<sub>1−<i>x</i></sub>Fe<i><sub>x</sub></i>OBr are 1.31 and 2.05 times that of BiOBr for RhB, respectively. Moreover, the novel Cd<sup>2+</sup>/Fe<sup>3+</sup> co-doped BiOBr photocatalysts with ~0.42 eV impurity bands presented remarkably enhanced photocatalytic activities with being 3.10 times that of pure BiOBr, by achieving e<sup>−</sup>/h<sup>+</sup> efficient separation and narrowed bandgap with the ions synergistic effect of Cd<sup>2+</sup> and Fe<sup>3+</sup>. Based on DFT insights, the photodegradation mechanism was systematically studied that the conversion of multivalent Fe<sup>3+</sup> ions promoted the production of •O<sub>2</sub><sup>−</sup>, and Cd<sup>2+</sup> ions worked as electron transfer mediators, which elucidated that the •O<sub>2</sub><sup>−</sup> and h<sup>+</sup><sub>VB</sub> mainly participated in the catalytic reaction. The experimental and theoretical results show that the synergistic effects of multi-ion doping have great potential in the field of photocatalysis. |
| first_indexed | 2024-03-09T05:14:35Z |
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| last_indexed | 2024-03-09T05:14:35Z |
| publishDate | 2021-02-01 |
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| series | Nanomaterials |
| spelling | doaj.art-00130ae4a05649eead7674d6721e9ae72023-12-03T12:46:06ZengMDPI AGNanomaterials2079-49912021-02-0111242310.3390/nano11020423New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-LightHong Sheng0Wei Wang1Rong Dai2Jing Ning3Lei Zhang4Qiao Wu5Fuchun Zhang6Junfeng Yan7Weibin Zhang8College of Mathematics & Physics, Weinan Normal University, Weinan 714000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Physics and Electronic Information, Yan’an University, Yan’an 716000, ChinaSchool of Information Science Technology, Northwest University, Xi’an 710127, ChinaSchool of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, ChinaUniform flowerlike microspheres Cd<sup>2+</sup>/Fe<sup>3+</sup> co-doped BiOBr were prepared with the aid of the microwave hydrothermal process. The results indicate that the degradation performance of Bi<sub>1−<i>x</i></sub>Cd<i><sub>x</sub></i>OBr and Bi<sub>1−<i>x</i></sub>Fe<i><sub>x</sub></i>OBr are 1.31 and 2.05 times that of BiOBr for RhB, respectively. Moreover, the novel Cd<sup>2+</sup>/Fe<sup>3+</sup> co-doped BiOBr photocatalysts with ~0.42 eV impurity bands presented remarkably enhanced photocatalytic activities with being 3.10 times that of pure BiOBr, by achieving e<sup>−</sup>/h<sup>+</sup> efficient separation and narrowed bandgap with the ions synergistic effect of Cd<sup>2+</sup> and Fe<sup>3+</sup>. Based on DFT insights, the photodegradation mechanism was systematically studied that the conversion of multivalent Fe<sup>3+</sup> ions promoted the production of •O<sub>2</sub><sup>−</sup>, and Cd<sup>2+</sup> ions worked as electron transfer mediators, which elucidated that the •O<sub>2</sub><sup>−</sup> and h<sup>+</sup><sub>VB</sub> mainly participated in the catalytic reaction. The experimental and theoretical results show that the synergistic effects of multi-ion doping have great potential in the field of photocatalysis.https://www.mdpi.com/2079-4991/11/2/423BiOBrCd<sup>2+</sup>/Fe<sup>3+</sup>-dopingdensity function theorymicrospherephotocatalytic activity |
| spellingShingle | Hong Sheng Wei Wang Rong Dai Jing Ning Lei Zhang Qiao Wu Fuchun Zhang Junfeng Yan Weibin Zhang New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light Nanomaterials BiOBr Cd<sup>2+</sup>/Fe<sup>3+</sup>-doping density function theory microsphere photocatalytic activity |
| title | New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light |
| title_full | New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light |
| title_fullStr | New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light |
| title_full_unstemmed | New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light |
| title_short | New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light |
| title_sort | new insights into cd sup 2 sup fe sup 3 sup co doped biobr for enhancing the photocatalysis efficiency of dye decomposition under visible light |
| topic | BiOBr Cd<sup>2+</sup>/Fe<sup>3+</sup>-doping density function theory microsphere photocatalytic activity |
| url | https://www.mdpi.com/2079-4991/11/2/423 |
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