Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 32, Issue 41, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202206817
Keywords
acetic acid; CO; (2) reduction; photocatalysis; single atoms; TiO; (2); value-added
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Funding
- Research Grants Council of Hong Kong [14304019]
- Beijing Synchrotron Radiation Facility (BSRF)
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An asymmetric coupled heteronuclear photocatalyst is designed for highly selective production of acetic acid from CO2 reduction. Experimental data and theoretical calculations reveal the high activity and excellent performance of this catalyst system.
Photocatalytic reduction of CO2 to value-added liquid fuels is a promising approach to alleviate the global energy and environmental problems. However, highly selective production of C2+ products from CO2 reduction reaction (CO2RR) is very difficult because of the sluggish C-C coupling reaction. An asymmetric coupled heteronuclear photocatalyst is designed to overcome this limitation. The new catalyst contains single atoms of nickel and cobalt loaded on titanium dioxide. It exhibits an impressive 71% selectivity for acetic acid. The experimental data and theoretical calculations reveal that the Ni and Co single atom sites not only significantly lower the energy barrier of electron transfer in photocatalysis but also efficiently promote the C-C coupling toward CH3COOH. The high activity of such a heteronuclear catalyst system will shed light on the future development of effective materials for CO2RR.
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