TY  - JOUR
T1  - Proton-Coupled Electron Transfer on Cu2O/Ti3C2Tx MXene for Propane (C3H8) Synthesis from Electrochemical CO2 Reduction
AU  - Kim, Jun Young
AU  - Hong, Won Tae
AU  - Phu, Thi Kim Cuong
AU  - Cho, Seong Chan
AU  - Kim, Byeongkyu
AU  - Baeck, Unbeom
AU  - Oh, Hyung-Suk
AU  - Koh, Jai Hyun
AU  - Yu, Xu
AU  - Choi, Chang Hyuck
AU  - Park, Jongwook
AU  - Lee, Sang Uck
AU  - Chung, Chan-Hwa
AU  - Kim, Jung Kyu
Y1  - 2024/08/19
PY  - 2024
DA  - 2024/08/19
DO  - https://doi.org/10.1002/advs.202405154
T2  - Advanced Science
JF  - Advanced Science
JO  - Advanced Science
JA  - Adv. Sci.
SP  - 2405154
VL  - 11
IS  - 39
KW  - C2-C1 coupling
KW  - electrochemical CO2 reduction
KW  - in-situ ATR-FTIR
KW  - propane production
KW  - proton-coupled electron transfer
PB  - John Wiley & Sons, Ltd
SN  - 2198-3844
UR  - https://doi.org/10.1002/advs.202405154
Y2  - 2024/09/08
N2  - Abstract Electrochemical CO2 reduction reaction (CO2RR) to produce value-added multi-carbon chemicals has been an appealing approach to achieving environmentally friendly carbon neutrality in recent years. Despite extensive research focusing on the use of CO2 to produce high-value chemicals like high-energy-density hydrocarbons, there have been few reports on the production of propane (C3H8), which requires carbon chain elongation and protonation. A rationally designed 0D/2D hybrid Cu2O anchored-Ti3C2Tx MXene catalyst (Cu2O/MXene) is demonstrated with efficient CO2RR activity in an aqueous electrolyte to produce C3H8. As a result, a significantly high Faradaic efficiency (FE) of 3.3% is achieved for the synthesis of C3H8 via the CO2RR with Cu2O/MXene, which is ≈26 times higher than that of Cu/MXene prepared by the same hydrothermal process without NH4OH solution. Based on in-situ attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) and density functional theory (DFT) calculations, it is proposed that the significant electrocatalytic conversion originated from the synergistic behavior of the Cu2O nanoparticles, which bound the *C2 intermediates, and the MXene that bound the *CO coupling to the C3 intermediate. The results disclose that the rationally designed MXene-based hybrid catalyst facilitates multi-carbon coupling as well as protonation, thereby manipulating the CO2RR pathway.
ER  -