A Ni-O-Ag photothermal catalyst enables 103-m <sup>2</sup> artificial photosynthesis with >17% solar-to-chemical energy conversion efficiency-Reference-Cited by-同舟云学术

A Ni-O-Ag photothermal catalyst enables 103-m ² artificial photosynthesis with >17% solar-to-chemical energy conversion efficiency

Published:2024-05-17 Issue:20 Volume:10 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Li Yaguang¹^ORCID,Meng Fanqi²,Wu Qixuan¹^ORCID,Yuan Dachao¹³^ORCID,Wang Haixiao¹^ORCID,Liu Bang¹^ORCID,Wang Junwei¹^ORCID,San Xingyuan¹^ORCID,Gu Lin²^ORCID,Meng Qingbo²^ORCID

Affiliation:

1. Research Center for Solar Driven Carbon Neutrality, Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques, Ministry of Education, The College of Physics Science and Technology, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.

2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

3. College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding 071001, China.

Abstract

The scalable artificial photosynthesis composed of photovoltaic electrolysis and photothermal catalysis is limited by inefficient photothermal CO 2 hydrogenation under weak sunlight irradiation. Herein, NiO nanosheets supported with Ag single atoms [two-dimensional (2D) Ni 1 Ag 0.02 O 1 ] are synthesized for photothermal CO 2 hydrogenation to achieve 1065 mmol g −1 hour −1 of CO production rate under 1-sun irradiation. This performance is attributed to the coupling effect of Ag-O-Ni sites to enhance the hydrogenation of CO 2 and weaken the CO adsorption, resulting in 1434 mmol g −1 hour −1 of CO yield at 300°C. Furthermore, we integrate the 2D Ni 1 Ag 0.02 O 1 -supported photothermal reverse water-gas shift reaction with commercial photovoltaic electrolytic water splitting to construct a 103-m 2 scale artificial photosynthesis system (CO 2 + H 2 O → CO + H 2 + O 2 ), which achieves more than 22 m 3 /day of green syngas with an adjustable H 2 /CO ratio (0.4-3) and a photochemical energy conversion efficiency of >17%. This research charts a promising course for designing practical, natural sunlight–driven artificial photosynthesis systems.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adn5098

Reference82 articles.

1. Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting

2. Operando studies reveal active Cu nanograins for CO2 electroreduction

3. Isolated FeN 4 Sites for Efficient Electrocatalytic CO 2 Reduction

4. Porous crystalline frameworks for thermocatalytic CO2 reduction: an emerging paradigm

5. A large-sized cell for solar-driven CO2 conversion with a solar-to-formate conversion efficiency of 7.2%