Journal
NANOSCALE
Volume 14, Issue 27, Pages 9762-9770Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr02585j
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Funding
- Ministry of Science and Technology of China [2017YFA0403003]
- National Natural Science Foundation of China [22033009]
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This study demonstrates a new approach to fabricating high-performance photocatalytic materials by creating periodically nanoporous hydrogen-bonded organic frameworks (HOFs). The nanoporous HOF architecture, compared to conventional microporous HOFs, has a larger number of free carboxyl groups on its surface and shows improved photoelectrochemical properties.
The development of highly catalytic hydrogen-bonded organic frameworks (HOFs) is of great importance, but remains challenging. Herein, we demonstrate the fabrication of a periodically nanoporous HOF for high performance photocatalysis. Compared with the conventional microporous HOFs, the nanoporous HOF architecture has a larger number of free carboxyl groups on the surface and presents greatly improved photoelectrochemical properties. It exhibits high catalytic activity for the photo-oxidative coupling of amines under mild conditions such as air atmosphere and room temperature and without any co-catalysts, sacrificial reagents or photosensitizers. The relationship between the structure, properties and catalytic performance of the nanoporous HOF was studied by experimental and theoretical investigations. It shows that such a HOF structure facilitates reactant adsorption and O-2 dissociation, thus promoting the oxidative coupling reaction. This work provides a new way for improving the catalytic performance of a single HOF.
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