Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation
Cooperative coupling of hydrogen peroxide (H2O2) photosynthesis with organic pollutant degradation is promising strategy applied in chemical synthesis and environmental protection. Nonetheless, the photocatalytic performance is limited by sluggish photogenerated carrier separation and limited redox...
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Elsevier
2025-05-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824002090 |
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| author | Yanyan Zhao Yong Zhang Haiyan Tan Chenbin Ai Jianjun Zhang |
| author_facet | Yanyan Zhao Yong Zhang Haiyan Tan Chenbin Ai Jianjun Zhang |
| author_sort | Yanyan Zhao |
| collection | DOAJ |
| description | Cooperative coupling of hydrogen peroxide (H2O2) photosynthesis with organic pollutant degradation is promising strategy applied in chemical synthesis and environmental protection. Nonetheless, the photocatalytic performance is limited by sluggish photogenerated carrier separation and limited redox potentials. Herein, an S-scheme heterojunction was constructed by assembling the TiO2 nanoparticles and a Schiff-base COF together. The formed S-scheme TiO2/COF heterojunction can efficiently produce H2O2 and degrade Rhodamine B (RhB) synchronously. The S-scheme charge transfer mechanism in TiO2/COF composite is well unveiled by in situ irradiated X-ray photoelectron spectroscopy and DFT calculation. The femtosecond transient absorption spectra reveal the superior charge migration at interface between TiO2 and COF. The designed TiO2/COF composite shows drastically enhanced H2O2 yield of 1326 μmol·g−1·h−1 in RhB solution, and the AQY value of 4.11% under 420 nm monochromatic light irradiation is achieved. Meanwhile, 100% of RhB degraded under light irradiation for 40 min with TiO2/TD COF as photocatalyst. This work exemplifies a promising approach to design COF-based S-scheme heterojunction with ameliorative photocatalytic performance for simultaneous organic pollutants degradation and H2O2 production. |
| format | Article |
| id | doaj-art-1b464a1bef784c8bb5cb826ef0d74c6c |
| institution | DOAJ |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-1b464a1bef784c8bb5cb826ef0d74c6c2025-08-20T02:47:10ZengElsevierJournal of Materiomics2352-84782025-05-0111310097010.1016/j.jmat.2024.100970Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradationYanyan Zhao0Yong Zhang1Haiyan Tan2Chenbin Ai3Jianjun Zhang4College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo, 726000, Shaanxi, ChinaSchool of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, Hubei, ChinaSchool of Chemistry and Environmental Engineering, Hubei University for Nationalities, Enshi, 445000, Hubei, ChinaLaboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430078, ChinaLaboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430078, China; Corresponding author.Cooperative coupling of hydrogen peroxide (H2O2) photosynthesis with organic pollutant degradation is promising strategy applied in chemical synthesis and environmental protection. Nonetheless, the photocatalytic performance is limited by sluggish photogenerated carrier separation and limited redox potentials. Herein, an S-scheme heterojunction was constructed by assembling the TiO2 nanoparticles and a Schiff-base COF together. The formed S-scheme TiO2/COF heterojunction can efficiently produce H2O2 and degrade Rhodamine B (RhB) synchronously. The S-scheme charge transfer mechanism in TiO2/COF composite is well unveiled by in situ irradiated X-ray photoelectron spectroscopy and DFT calculation. The femtosecond transient absorption spectra reveal the superior charge migration at interface between TiO2 and COF. The designed TiO2/COF composite shows drastically enhanced H2O2 yield of 1326 μmol·g−1·h−1 in RhB solution, and the AQY value of 4.11% under 420 nm monochromatic light irradiation is achieved. Meanwhile, 100% of RhB degraded under light irradiation for 40 min with TiO2/TD COF as photocatalyst. This work exemplifies a promising approach to design COF-based S-scheme heterojunction with ameliorative photocatalytic performance for simultaneous organic pollutants degradation and H2O2 production.http://www.sciencedirect.com/science/article/pii/S2352847824002090S-schemeCovalent organic frameworksTiO2Hydrogen peroxide productionRhodamine B degradation |
| spellingShingle | Yanyan Zhao Yong Zhang Haiyan Tan Chenbin Ai Jianjun Zhang Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation Journal of Materiomics S-scheme Covalent organic frameworks TiO2 Hydrogen peroxide production Rhodamine B degradation |
| title | Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation |
| title_full | Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation |
| title_fullStr | Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation |
| title_full_unstemmed | Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation |
| title_short | Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation |
| title_sort | rapid charge transfer in tio2 cof s scheme heterojunction for boosting h2o2 photosynthesis and rhodamine b degradation |
| topic | S-scheme Covalent organic frameworks TiO2 Hydrogen peroxide production Rhodamine B degradation |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824002090 |
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