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- Title
Zr-Based Metal−Organic Frameworks with Phosphoric Acids for the Photo-Oxidation of Sulfides.
- Authors
Zhao, Zhenghua; Liu, Mingjie; Zhou, Kai; Gong, Hantao; Shen, Yajing; Bao, Zongbi; Yang, Qiwei; Ren, Qilong; Zhang, Zhiguo
- Abstract
Heterogeneous Brønsted acidic catalysts such as phosphoric acids are the conventional activators for organic transformations. However, the photocatalytic performance of these catalysts is still rarely explored. Herein, a novel Zr-based metal−organic framework Zr-MOF-P with phosphoric acids as a heterogeneous photocatalyst has been fabricated, which shows high selectivity and reactivity towards the photo-oxidation of sulfides under white light illumination. A mechanism study indicates that the selective oxygenation of sulfides occurs with triplet oxygen rather than common reactive oxygen species (ROS). When Zr-MOF-P is irradiated, the hydroxyl group of phosphoric acid is converted into oxygen radical, which takes an electron from the sulfides, and then the activated substrates react with the triplet oxygen to form sulfoxides, avoiding the destruction of the catalysts and endowing the reaction with high substrate compatibility and fine recyclability.
- Subjects
METAL-organic frameworks; ZIRCONIUM compounds; PHOSPHORIC acid; REACTIVE oxygen species; SULFIDES; HYDROXYL group; WASTE recycling
- Publication
International Journal of Molecular Sciences, 2022, Vol 23, Issue 24, p16121
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms232416121