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- Title
Covalent‐Bonding Oxidation Group and Titanium Cluster to Synthesize a Porous Crystalline Catalyst for Selective Photo‐Oxidation Biomass Valorization.
- Authors
Chang, Jia‐Nan; Li, Qi; Yan, Y.; Shi, Jing‐Wen; Zhou, Jie; Lu, Meng; Zhang, Mi; Ding, Hui‐Min; Chen, Yifa; Li, Shun‐Li; Lan, Ya‐Qian
- Abstract
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 Ti6‐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 ≈100 % conversion, which is more than 2, 5, and 10 times higher than MOF‐901 (43 %), Ti6‐NH2 (19 %) and under‐darkness (9 %), respectively. Notably, an O2‐based mechanism is proposed and the vital roles of Ti6‐NH2 and BTT are verified by DFT calculations. This work might facilitate the exploration of porous‐crystalline‐catalysts for selective biomass‐valorization.
- Subjects
TITANIUM oxidation; TITANIUM group; BIOMASS; CATALYSTS; PHOTOCATALYTIC oxidation; TITANIUM catalysts; OXIDATION
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 37, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202209289