Speaker
Description
The increase of CO2 level becomes a global problem of 21st century leading to the actual request for new advanced materials and methods of CO2 utilisation [1]. Here, we propose the hybrid plasmonic catalyst for CO2 transformation to carbonates with quantative yields at ambient conditions, in contrast to commonly applied elevated temperature and pressure [2]. Proposed catalyst presents the combination of gold nanoparticles modified by triazabicyclodec-5-ene (TBD). TBD is responsible for CO2 fixation forming zwitterionic adduct near the plasmonic surface. The terminating stage – interaction of zwitterionic adduct with epoxide is pumped by plasmonic triggering, being the first example of plasmon-assisted CO2 cycloaddition. Taking advantages of proposed catalyst, we reached the unprecedented turnover number and frequency; as well as apparent quantum yield, even in the case of air as a CO2 source and light as an energy input. For the study of mechanistic aspects control experiments including variation of illumination conditions, temperature, and utilization of unmodified nanoparticles prove the photochemical pathway through plasmon excitation.
[1] D. Li, M. Kassymova, X. Cai, S. Q. Zang, H. L. Jiang, Coord. Chem. Rev. 2020, 412, 213262.
[2] F. M. Baena-Moreno, M. Rodríguez-Galán, F. Vega, B. Alonso-Fariñas, L. F. Vilches Arenas, B. Navarrete, Energy Sources, Part A Recover. Util. Environ. Eff. 2019, 41, 1403.
| Affiliation of speaker | Tomsk Polytechnic Univeristy |
|---|---|
| Publication | Without publication of the article |
