Air to fuel: Direct capture of CO2 from air and in-situ solar-driven conversion into syngas via Nix/NaA nanomaterials
Cheng Tian, Xianglei Liu, Chenxi Liu, S. Li, Qiyan Li, Nan Sun, Ke Gao, Zhixing Jiang, Kun Chang, Yimin Xuan
Abstract
Ever-increasing CO 2 emissions and atmospheric concentration mainly due to the burning of traditional fossil fuels have caused severe global warming and climate change problems. Inspired by nature’s carbon cycle, we propose a novel dual functional catalyst-sorbent to tackle energy and environmental problems simultaneously via direct capture of CO 2 from air and in-situ solar-driven conversion into clean fuels. Economically and operationally advantageous, the planned coupling reaction can be carried out in a single reactor without the requirement for an extra trapping device. The great CO 2 capture and conversion performance in an integrated step is shown by the CO 2 capacity of up to 0.38 mmol·g −1 for adsorption from 500 ppm CO 2 at 25 °C and the CO 2 conversion rate of up to 95%. Importantly, the catalyst-sorbent is constituted of a nonprecious metal Ni catalyst and an inexpensive commercially available CO 2 sorbent, viz, zeolite NaA. Furthermore, this designed dual functional material also exhibits outstanding stability performance. This work offers a novel pathway of capturing CO 2 in the air at room temperature and converting it by CH 4 into fuel, contributing to the new era of carbon neutrality.