Synthesis gas (syngas), with a wide range of molar ratios of CO and H2 from 0.3 to 4, can serve as an important feedstock in the petroleum industry for the production of various synfuels; however, it remains a major challenge to tune the composition over such a wide range of ratios. Here, we demonstrate the photocatalytic production of syngas with tunable H2/CO molar ratios via rationally designed Au/MoS2 symmetrically tipped CdS nanowires (AMTCs), in which MoS2 and Au serve as cocatalysts for the hydrogen evolution reaction (HER) and CO2 reduction reaction (CO2RR), respectively. The competing reactions are controlled and aligned through the selective decoration of size-controlled (1–50 nm) Au nanoparticles on MoS2 by controlling the charge transfer kinetics during photodeposition. Finally, the widest range of H2/CO ratios in syngas reported to date, ranging from 0.35 to 3.6, is realized, indicating that this is a potentially efficient approach for solar-to-syngas production by using rationally designed nanostructures.
Bibliographical noteFunding Information:
This work was supported by National Natural Science Foundation of China (No. 51802157 , 21902104 ), the Natural Science Foundation of Jiangsu Province of China ( BZ2020063 ). L. Y. Wang acknowledges the support by Natural Science Foundation of Top Talent of SZTU (Grant no. 2019010801003 ). X. M. Hu acknowledges the support by PhD Scientific Research Startup Foundation of Jinling Institute of Technology (Project No. JIT-B-202120),J. H. Park acknowledges the support by the National Research Foundation of Korea ( NRF ) funded by the Ministry of Science , ICT and Future Planning (NRF- 2019R1A2C3010479 , 2018M3D1A1058624 , 2021M3H4A1A03049662 ). X. M. Hu and J. Jin contributed equally to this work.
© 2022 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Process Chemistry and Technology