Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation
Defect-rich photocatalytic materials with excellent charge transfer properties are very popular. Herein, Sm-doped CeO<sub>2</sub> nanorods were annealed in a N<sub>2</sub> atmosphere to obtain the defective Sm-doped CeO<sub>2</sub> photocatalysts (Vo–Sm–CeO<sub...
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MDPI AG
2020-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/11/2307 |
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| author | Jindong Yang Ning Xie Jingnan Zhang Wenjie Fan Yongchao Huang Yexiang Tong |
| author_facet | Jindong Yang Ning Xie Jingnan Zhang Wenjie Fan Yongchao Huang Yexiang Tong |
| author_sort | Jindong Yang |
| collection | DOAJ |
| description | Defect-rich photocatalytic materials with excellent charge transfer properties are very popular. Herein, Sm-doped CeO<sub>2</sub> nanorods were annealed in a N<sub>2</sub> atmosphere to obtain the defective Sm-doped CeO<sub>2</sub> photocatalysts (Vo–Sm–CeO<sub>2</sub>). The morphology and structure of Vo–Sm–CeO<sub>2</sub> were systematically characterized. The Vo–Sm–CeO<sub>2</sub> nanorods demonstrated an excellent photodegradation performance of methyl blue under visible light irradiation compared to CeO<sub>2</sub> nanorods and Sm–CeO<sub>2</sub>. Reactive oxygen species including OH, ·O<sub>2</sub><sup>−</sup>, and h<sup>+</sup> were confirmed to play a pivotal role in the removal of pollutants via electron spin resonance spectroscopy. Doping Sm enhances the conductivity of CeO<sub>2</sub> nanorods, benefiting photogenerated electrons being removed from the surface reactive sites, resulting in the superior performance. |
| first_indexed | 2024-03-10T14:40:55Z |
| format | Article |
| id | doaj.art-5cc87ff150d44608963981ccaf257817 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T14:40:55Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-5cc87ff150d44608963981ccaf2578172023-11-20T21:49:31ZengMDPI AGNanomaterials2079-49912020-11-011011230710.3390/nano10112307Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue OxidationJindong Yang0Ning Xie1Jingnan Zhang2Wenjie Fan3Yongchao Huang4Yexiang Tong5MOE Laboratory of Bioinorganic and Synthetic Chemistry the Key Lab of Low-Carbon Chemistry and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, ChinaInstitute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou 510006, ChinaMOE Laboratory of Bioinorganic and Synthetic Chemistry the Key Lab of Low-Carbon Chemistry and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, ChinaAnalysis and Testing Center, South China Normal University, Guangzhou 510006, ChinaInstitute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou 510006, ChinaMOE Laboratory of Bioinorganic and Synthetic Chemistry the Key Lab of Low-Carbon Chemistry and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, ChinaDefect-rich photocatalytic materials with excellent charge transfer properties are very popular. Herein, Sm-doped CeO<sub>2</sub> nanorods were annealed in a N<sub>2</sub> atmosphere to obtain the defective Sm-doped CeO<sub>2</sub> photocatalysts (Vo–Sm–CeO<sub>2</sub>). The morphology and structure of Vo–Sm–CeO<sub>2</sub> were systematically characterized. The Vo–Sm–CeO<sub>2</sub> nanorods demonstrated an excellent photodegradation performance of methyl blue under visible light irradiation compared to CeO<sub>2</sub> nanorods and Sm–CeO<sub>2</sub>. Reactive oxygen species including OH, ·O<sub>2</sub><sup>−</sup>, and h<sup>+</sup> were confirmed to play a pivotal role in the removal of pollutants via electron spin resonance spectroscopy. Doping Sm enhances the conductivity of CeO<sub>2</sub> nanorods, benefiting photogenerated electrons being removed from the surface reactive sites, resulting in the superior performance.https://www.mdpi.com/2079-4991/10/11/2307cerium oxideSm dopingdefectsenvironmental photocatalysisnanomaterials |
| spellingShingle | Jindong Yang Ning Xie Jingnan Zhang Wenjie Fan Yongchao Huang Yexiang Tong Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation Nanomaterials cerium oxide Sm doping defects environmental photocatalysis nanomaterials |
| title | Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation |
| title_full | Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation |
| title_fullStr | Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation |
| title_full_unstemmed | Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation |
| title_short | Defect Engineering Enhances the Charge Separation of CeO<sub>2</sub> Nanorods toward Photocatalytic Methyl Blue Oxidation |
| title_sort | defect engineering enhances the charge separation of ceo sub 2 sub nanorods toward photocatalytic methyl blue oxidation |
| topic | cerium oxide Sm doping defects environmental photocatalysis nanomaterials |
| url | https://www.mdpi.com/2079-4991/10/11/2307 |
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