TY  - JOUR
AU  - Karmakar, Sanchita
AU  - Barman, Soumitra
AU  - Rahimi, Faruk Ahamed
AU  - Biswas, Sandip
AU  - Nath, Sukhendu
AU  - Maji, Tapas Kumar
TI  - Developing post-modified Ce-MOF as a photocatalyst: a detail mechanistic insight into CO<sub>2</sub> reduction toward selective C2 product formation
JO  - Energy & environmental science
VL  - 16
IS  - 5
SN  - 1754-5692
CY  - Cambridge
PB  - RSC Publ.
M1  - PUBDB-2023-06068
SP  - 2187 - 2198
PY  - 2023
AB  - Visible light-driven C–C bond formation to produce C2-based liquid fuel selectively from CO<sub>2</sub> is of great interest and remains a challenging task due to uphill electron transfer kinetics. Herein, we have developed [Ru(bpy)<sub>2</sub>]<sup>2+</sup>-grafted UiO-66-bpydc Ce-MOFvia post-synthetic modification to harvest visible light based on MLCT (RU<sub>dπ</sub><sup>II</sup> → π<sub>bpy</sub><sup>*</sup>) transition. The employment of Ru-grafted Ce-MOF facilitates fast electron transfer due to the vacant low-lying 4f orbital of Ce<sup>IV</sup>, which was realized from ultrafast transient absorption (TA) spectroscopy, XANES, and in situ UV-vis spectroscopy. The synergistic effect of facile electron transfer and concomitant accommodation of two CO<sub>2</sub> molecules in the proximal defect-site in Ce<sup>IV</sup> leads to facile C–C bond formation via COOH* coupling to yield acetic acid. The catalytic assembly produces 1133 μmol g<sup>−1</sup> of acetic acid with an impressive rate of 128 μmol g<sup>−1</sup> h<sup>−1</sup>, suppressing the formation of other C1-based carbonaceous products in water (with selectivity 99.5
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000964676500001
DO  - DOI:10.1039/D2EE03755F
UR  - https://bib-pubdb1.desy.de/record/596137
ER  -