Coupling Direct Atmospheric CO 2 Capture with Photocatalytic CO 2 Reduction for Highly Efficient C 2 H 6 Production.

As massive amounts of carbon dioxide (CO 2 ) have been emitted into the atmosphere causing severe global warming problems, developing carbon-negative techniques to control atmospheric CO 2 concentrations is enormously urgent. Herein, by coupling the direct atmosphere CO 2 capture adsorbent ZSM-5 with the CO 2 reduction photocatalyst NiV 2 Se 4 , we present the first synergistic approach for concentrating and converting atmospheric CO 2 into C 2 solar fuels. A C 2 H 6 yield of 1.85 μmol g -1 h -1 has been achieved in the air, outperforming state-of-the-art direct atmospheric CO 2 conversion photocatalysts. Comprehensive characterizations show that ZSM-5 enhances CO 2 capture from the atmosphere, improving the interfacial interaction of CO 2 on the NiV 2 Se 4 surface for C-C coupling of CH 3 * to form C 2 H 6 . This work demonstrates the first example of integrating direct CO 2 capture material with a CO 2 reduction photocatalyst for atmospheric CO 2 capture and utilization, which paves the way for the negative-carbon technology development under worldwide carbon-neutral pressure.