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Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature.
- Source :
-
New Journal of Chemistry . 2/14/2022, Vol. 46 Issue 6, p2962-2970. 9p. - Publication Year :
- 2022
-
Abstract
- Indoor formaldehyde (HCHO) (emitted from furniture and/or wood products) causes widespread concerns, and photocatalysis is one of the effective methods to degrade HCHO. In this work, we prepared a new MOF-based photo-catalyst by modifying ZIF-67 (modified ZIF-67, ZIF-67-F) via a low-temperature thermal treatment, which allows the conversion of –N=C– groups in ZIF-67 to –N=C=O, effectively expending the limited light absorption of ZIF-67 from 200–310 nm and 500–620 nm to a broad absorption in the UV-visible region of 200 to 780nm. In addition, the dissociation of the functional groups (–CH3) on ZIF-67 creates more cavities and improves the porous ZIF-67-F material. Benefiting from the excellent light excitation and adsorption performance, ZIF-67-F can successfully degrade 87.8% HCHO at room temperature, where, ˙O2− is the main active species in the degradation reactions. In addition, ZIF-67-F shows great stability and reusability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 46
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 155129468
- Full Text :
- https://doi.org/10.1039/d1nj06192e