Zhao, En, Su, Jingyuan, Fan, Hehe, Nan, Bing, Li, Lina, Qi, Haifeng, Fang, Weiwei, Zhang, Wenjun and Chen, Zupeng
2025.
Defect engineering of TiO2 for efficient photocatalytic transfer hydrogenation with palladium as cocatalyst and water as a hydrogen source.
Green Energy & Environment
10.1016/j.gee.2025.09.008
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Abstract
Photocatalytic transfer hydrogenation using water as the proton source has emerged as an attractive and green approach for the catalytic reduction of unsaturated bonds. Herein, we report an oxygen-defective TiO2-supported palladium catalyst (Pd-TiO2-Ov) for efficient photocatalytic water-donating transfer hydrogenation of anethole towards 4-n-propylanisole in a high yield of 99.9%, which is significantly higher compared to the pristine TiO2-supported palladium catalyst (Pd-TiO2, 74%). The enhanced performance is ascribed to the presence of oxygen vacancies, which facilitate light absorption and suppress the recombination of photogenerated electron-hole pairs. Furthermore, the Pd-TiO2-Ov is versatile in hydrogenating various alkene substrates including those with hydroxyl, ether, fluoride, and chloride functional groups in full conversion, thus offering a green method for transfer hydrogenation of alkenes. This study provides new insights and advances in current hydrogenation technology with water as the proton source.
| Item Type: | Article |
|---|---|
| Date Type: | Published Online |
| Status: | In Press |
| Schools: | Schools > Chemistry |
| ISSN: | 2468-0257 |
| Date of First Compliant Deposit: | 5 December 2025 |
| Date of Acceptance: | 10 September 2025 |
| Last Modified: | 05 Dec 2025 16:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/181425 |
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