1. Designing Heteroatom‐Codoped Iron Metal–Organic Framework for Promotional Photoreduction of Carbon Dioxide to Ethylene
- Author
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Guo, Fan, Li, Rui‐Xia, Yang, Sizhuo, Zhang, Xiao‐Yu, Yu, Hongjian, Urban, Jeffrey J, and Sun, Wei‐Yin
- Subjects
Chemical Sciences ,Physical Chemistry ,Affordable and Clean Energy ,C2H4 ,CO2 Reduction ,Doping ,Metal-Organic Frameworks ,Photocatalysis ,Organic Chemistry ,Chemical sciences - Abstract
Rational engineering active sites and vantage defects of catalysts are promising but grand challenging task to enhance photoreduction CO2 to high value-added C2 products. In this study, we designed an N,S-codoped Fe-based MIL-88B catalyst with well-defined bipyramidal hexagonal prism morphology via a facile and effective process, which was synthesized by addition of appropriate 1,2-benzisothiazolin-3-one (BIT) and acetic acid to the reaction solution. Under simulated solar irradiation, the designed catalyst exhibits high C2 H4 evolution yield of 17.7 μmol g-1 ⋅h, which has been rarely achieved in photocatalytic CO2 reduction process. The synergistic effect of Fe-N coordinated sites and reasonable defects in the N,S-codoped photocatalyst can accelerate the migration of photogenerated carriers, resulting in high electron density, and this in turn helps to facilitate the formation and dimerization of C-C coupling intermediates for C2 H4 effectively.
- Published
- 2023