Coupling Direct Atmospheric CO<sub>2</sub> Capture with Photocatalytic CO<sub>2</sub> Reduction for Highly Efficient C<sub>2</sub>H<sub>6</sub> Production
Yixin Tian, Ranhao Wang, Shimao Deng, Yuting Tao, Wei Dai, Qian Zheng, Changzhu Huang, Chenlu Xie, Qiang Zeng, Jia Lin, Hong Chen
Abstract
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.