期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 37, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202209289
关键词
2; 5-Furandicarboxylic Acid; 5-Hydroxymethylfurfural; Biomass; Covalent Organic Framework; Photocatalysis
资金
- NSFC [21871141, 21871142, 21901122, 22071109, 22105080, 22171139, 92061101]
- Excellent Youth Foundation of Jiangsu Natural Science Foundation [BK20211593]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
A titanium-cluster based metal-covalent organic framework nanosheet has been synthesized, which shows effective photo-oxidation ability and selectivity for biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), facilitating the exploration of selective biomass-valorization.
The selective photo-oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is important due to its substitute-role in polyester-fabrication. Here, a titanium-cluster based metal-covalent organic framework nanosheet has been synthesized through the covalent-coupling between Ti-6-NH2 and benzotrithiophene tricarbaldehyde (BTT). The integration of them endows the nanosheet with a visible-light-adsorption region, effective electron-hole separation-efficiency and suitable photo-oxidation ability. Specifically, its photo-selectivity for HMF-to-FDCA can be >95 % with approximate to 100 % conversion, which is more than 2, 5, and 10 times higher than MOF-901 (43 %), Ti-6-NH2 (19 %) and under-darkness (9 %), respectively. Notably, an O-2-based mechanism is proposed and the vital roles of Ti-6-NH2 and BTT are verified by DFT calculations. This work might facilitate the exploration of porous-crystalline-catalysts for selective biomass-valorization.
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