Au/MoS2 tips as auxiliary rate aligners for the photocatalytic generation of syngas with a tunable composition

Xuemin Hu, Jie Jin, Yuqing Wang, Cheng Lin, Shipeng Wan, Kan Zhang, Luyang Wang, Jong Hyeok Park

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number121219
JournalApplied Catalysis B: Environmental
Volume308
DOIs
Publication statusPublished - 2022 Jul 5

Bibliographical note

Funding 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.

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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