Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions
Cu<sub>2</sub>O, a narrow-bandgap semiconductor with visible light absorption capabilities, faces limitations in photocatalytic applications due to photocorrosion from hole self-oxidation and insufficient light absorption. In this work, a series of novel spherical Cu<sub>2</sub&...
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2025-04-01
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| author | Kuo Zhang Xiufei Zhao Hang Qian Lihong Chen Biyu Wu Xiao Yang Haonan Zou Yujiao Hu Feng Chen Borong Liao Hu Zhou Lei Zhang Tianyi Ma Yusheng Zhang |
| author_facet | Kuo Zhang Xiufei Zhao Hang Qian Lihong Chen Biyu Wu Xiao Yang Haonan Zou Yujiao Hu Feng Chen Borong Liao Hu Zhou Lei Zhang Tianyi Ma Yusheng Zhang |
| author_sort | Kuo Zhang |
| collection | DOAJ |
| description | Cu<sub>2</sub>O, a narrow-bandgap semiconductor with visible light absorption capabilities, faces limitations in photocatalytic applications due to photocorrosion from hole self-oxidation and insufficient light absorption. In this work, a series of novel spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-scheme heterojunctions were successfully synthesized via self-assembly to overcome these challenges. The photocurrent, electrical impedance spectroscopy (EIS), and photoluminescence (PL) tests showed that Cu<sub>2</sub>O/1.5FePO<sub>4</sub> (CF1.5) had excellent electron hole separation efficiency. Subsequently, photocatalytic degradation was utilized as a probing technique to further confirm the above conclusions, with the kinetic reaction constants of CF1.5 being 2.46 and 11.23 times higher than those of Cu<sub>2</sub>O and FePO<sub>4</sub>, respectively. After five cycles of experiments and XPS analysis, it was found that the content of Cu(I) in CF1.5 did not significantly decrease after the reaction, indicating that it has superior anti-photocorrosion performance compared to single Cu<sub>2</sub>O, which is also due to the establishment of a Z-scheme heterojunction. Systematic studies using radical scavenging experiments and ESR tests identified ·OH and ·O<sub>2</sub><sup>−</sup> as the main active species involved in photocatalysis. The formation of a Z-scheme heterojunction not only enhances the photocatalytic activity of the CF1.5 composite but also effectively suppresses the photocorrosion of Cu<sub>2</sub>O, thereby offering a promising approach for enhancing anti-photocorrosion of Cu<sub>2</sub>O. |
| format | Article |
| id | doaj-art-fbab20f094e94151a280a02f6ee55bbe |
| institution | Kabale University |
| issn | 2624-781X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Reactions |
| spelling | doaj-art-fbab20f094e94151a280a02f6ee55bbe2025-08-20T03:29:44ZengMDPI AGReactions2624-781X2025-04-01622410.3390/reactions6020024Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme HeterojunctionsKuo Zhang0Xiufei Zhao1Hang Qian2Lihong Chen3Biyu Wu4Xiao Yang5Haonan Zou6Yujiao Hu7Feng Chen8Borong Liao9Hu Zhou10Lei Zhang11Tianyi Ma12Yusheng Zhang13Key Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaLaboratory and Information Technology Center, Ningbo University of Finance and Economics, Ningbo 315175, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Science, RMIT University, Melbourne, VIC 3000, AustraliaKey Laboratory of Theoretical Organic Chemistry and Functional Molecule (MoE), College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaCu<sub>2</sub>O, a narrow-bandgap semiconductor with visible light absorption capabilities, faces limitations in photocatalytic applications due to photocorrosion from hole self-oxidation and insufficient light absorption. In this work, a series of novel spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-scheme heterojunctions were successfully synthesized via self-assembly to overcome these challenges. The photocurrent, electrical impedance spectroscopy (EIS), and photoluminescence (PL) tests showed that Cu<sub>2</sub>O/1.5FePO<sub>4</sub> (CF1.5) had excellent electron hole separation efficiency. Subsequently, photocatalytic degradation was utilized as a probing technique to further confirm the above conclusions, with the kinetic reaction constants of CF1.5 being 2.46 and 11.23 times higher than those of Cu<sub>2</sub>O and FePO<sub>4</sub>, respectively. After five cycles of experiments and XPS analysis, it was found that the content of Cu(I) in CF1.5 did not significantly decrease after the reaction, indicating that it has superior anti-photocorrosion performance compared to single Cu<sub>2</sub>O, which is also due to the establishment of a Z-scheme heterojunction. Systematic studies using radical scavenging experiments and ESR tests identified ·OH and ·O<sub>2</sub><sup>−</sup> as the main active species involved in photocatalysis. The formation of a Z-scheme heterojunction not only enhances the photocatalytic activity of the CF1.5 composite but also effectively suppresses the photocorrosion of Cu<sub>2</sub>O, thereby offering a promising approach for enhancing anti-photocorrosion of Cu<sub>2</sub>O.https://www.mdpi.com/2624-781X/6/2/24Cu<sub>2</sub>O/FePO<sub>4</sub>Z-scheme heterojunctionphotocatalytic degradationanti-photocorrosion |
| spellingShingle | Kuo Zhang Xiufei Zhao Hang Qian Lihong Chen Biyu Wu Xiao Yang Haonan Zou Yujiao Hu Feng Chen Borong Liao Hu Zhou Lei Zhang Tianyi Ma Yusheng Zhang Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions Reactions Cu<sub>2</sub>O/FePO<sub>4</sub> Z-scheme heterojunction photocatalytic degradation anti-photocorrosion |
| title | Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions |
| title_full | Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions |
| title_fullStr | Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions |
| title_full_unstemmed | Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions |
| title_short | Study on the Anti-Photocorrosion Mechanism of Novel Self-Assembled Spherical Cu<sub>2</sub>O/FePO<sub>4</sub> Z-Scheme Heterojunctions |
| title_sort | study on the anti photocorrosion mechanism of novel self assembled spherical cu sub 2 sub o fepo sub 4 sub z scheme heterojunctions |
| topic | Cu<sub>2</sub>O/FePO<sub>4</sub> Z-scheme heterojunction photocatalytic degradation anti-photocorrosion |
| url | https://www.mdpi.com/2624-781X/6/2/24 |
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