Photovoltaic powered solar hydrogen production coupled with waste SO2 valorization enabled by MoP electrocatalysts

Jaemin Park; Hyunseok Yoon; Dong Yeop Lee; Su Geun Ji; Wooseok Yang; S. David Tilley; Myeong Chang Sung; Ik Jae Park; Jeiwan Tan; Hyungsoo Lee; Jin Young Kim; Dong Wan Kim; Jooho Moon

doi:10.1016/j.apcatb.2021.121045

Photovoltaic powered solar hydrogen production coupled with waste SO₂ valorization enabled by MoP electrocatalysts

Jaemin Park, Hyunseok Yoon, Dong Yeop Lee, Su Geun Ji, Wooseok Yang, S. David Tilley, Myeong Chang Sung, Ik Jae Park, Jeiwan Tan, Hyungsoo Lee, Jin Young Kim, Dong Wan Kim, Jooho Moon

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

In this study, we demonstrated high-rate H₂ generation by coupling with the sulfite oxidation reaction (SOR) as an alternative to the oxygen evolution reaction for solar H₂ production. The emerging and cost-effective molybdenum phosphide electrocatalyst was appropriately optimized and used as a bifunctional catalyst in an alkaline electrolyte for both SOR and HER. Powered by state-of-the-art perovskite–Si tandem photovoltaics, a remarkable photocurrent density of over 17 mA cm⁻² was achieved in the HER coupled with the SOR. In addition to the significantly enhanced photocurrent, the SOR can further reduce the overall cost of solar H₂ production owing to the elimination of the expensive membranes required for H₂ and O₂ gas separation. Considering the high global demand for desulfurization via the SOR, the strategy proposed here will enable practical H₂ production from renewable sources while effectively converting the toxic SO₂ gas into a value-added product for the chemical industry.

Original language	English
Article number	121045
Journal	Applied Catalysis B: Environmental
Volume	305
DOIs	https://doi.org/10.1016/j.apcatb.2021.121045
Publication status	Published - 2022 May 15

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

Molybdenum phosphide
Solar hydrogen
Sulfite oxidation reaction
Tandem photovoltaics
Water splitting

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcatb.2021.121045

Cite this

Park, J., Yoon, H., Lee, D. Y., Ji, S. G., Yang, W., Tilley, S. D., Sung, M. C., Park, I. J., Tan, J., Lee, H., Kim, J. Y., Kim, D. W., & Moon, J. (2022). Photovoltaic powered solar hydrogen production coupled with waste SO₂ valorization enabled by MoP electrocatalysts. Applied Catalysis B: Environmental, 305, Article 121045. https://doi.org/10.1016/j.apcatb.2021.121045

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abstract = "In this study, we demonstrated high-rate H2 generation by coupling with the sulfite oxidation reaction (SOR) as an alternative to the oxygen evolution reaction for solar H2 production. The emerging and cost-effective molybdenum phosphide electrocatalyst was appropriately optimized and used as a bifunctional catalyst in an alkaline electrolyte for both SOR and HER. Powered by state-of-the-art perovskite–Si tandem photovoltaics, a remarkable photocurrent density of over 17 mA cm−2 was achieved in the HER coupled with the SOR. In addition to the significantly enhanced photocurrent, the SOR can further reduce the overall cost of solar H2 production owing to the elimination of the expensive membranes required for H2 and O2 gas separation. Considering the high global demand for desulfurization via the SOR, the strategy proposed here will enable practical H2 production from renewable sources while effectively converting the toxic SO2 gas into a value-added product for the chemical industry.",

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AU - Tilley, S. David

AU - Sung, Myeong Chang

AU - Park, Ik Jae

AU - Tan, Jeiwan

AU - Lee, Hyungsoo

AU - Kim, Jin Young

AU - Kim, Dong Wan

AU - Moon, Jooho

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