| Autor: |
Kim, Bupmo, Kwon, Dayoung, Baeg, Jin‐Ook, Austeria P, Muthu, Gu, Geun Ho, Lee, Jeong‐Hyeon, Jeong, Jeehun, Kim, Wooyul, Choi, Wonyong |
| Předmět: |
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| Zdroj: |
Advanced Functional Materials; 5/8/2023, Vol. 33 Issue 19, p1-12, 12p |
| Abstrakt: |
The solar‐driven catalytic reduction of CO2 to value‐added chemicals is under intensive investigation. The reaction pathway via *OCHO intermediate (involving CO2 adsorbed through O‐binding) usually leads to the two‐electron transfer product of HCOOH. Herein, a single‐atom catalyst with dual‐atom‐sites featuring neighboring Sn(II) and Cu(I) centers embedded in C3N4 framework is developed and characterized, which markedly promotes the production of HCHO via four‐electron transfer through the *OCHO pathway. The optimized catalyst achieves a high HCHO productivity of 259.1 µmol g−1 and a selectivity of 61% after 24 h irradiation, which is ascribed to the synergic role of the neighboring Sn(II)–Cu(I) dual‐atom sites that stabilize the target intermediates for HCHO production. Moreover, adsorbed *HCHO intermediate is detected by in situ Fourier transform infrared spectroscopy (CO stretches at 1637 cm−1). This study provides a unique example that controls the selectivity of the multi‐electron transfer mechanisms of CO2 photoconversion using heteronuclear dual‐atom‐site catalyst to generate an uncommon product (HCHO) of CO2 reduction. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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