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A novel design of Cu(I) active site on the metal–organic framework for exploring the structural transformation of Fenton-like catalysts through in situ "capturing" OH−.
- Source :
-
Journal of Colloid & Interface Science . Oct2023, Vol. 648, p778-786. 9p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] The mutual transformation of reactive oxygen species may affect the structural transformation of catalysts during the Fenton-like processes. Its in-depth understanding is essential to achieve high catalytic activity and stability. In this study, a novel design of Cu(I) active sites based on the metal–organic framework (MOF) is proposed to "capture" OH− produced via Fenton-like processes and re-coordinate the oxidized Cu sites. The Cu(I)-MOF presents an excellent removal efficiency for sulfamethoxazole (SMX), with a high removal kinetic constant of 7.146 min−1. Combing DFT calculations with experimental observations, we have revealed that the Cu of Cu(I)-MOF exhibits a lower d-band center, enabling efficient activation of H 2 O 2 and spontaneous "capturing" of OH− to form Cu-MOF, which can be reorganized into the Cu(I)-MOF through molecular regulation for recycle. This research demonstrates a promising Fenton-like approach for solving the trade-off between catalytic activity and stability and provides new insights into the design and synthesis of efficient MOF-based catalysts for water treatment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 648
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 164866902
- Full Text :
- https://doi.org/10.1016/j.jcis.2023.05.189