Tailored BiVO4/In2O3 nanostructures with boosted charge separation ability toward unassisted water splitting

Mi Gyoung Lee; Jin Wook Yang; Ik Jae Park; Tae Hyung Lee; Hoonkee Park; Woo Seok Cheon; Sol A. Lee; Hyungsoo Lee; Su Geun Ji; Jun Min Suh; Jooho Moon; Jin Young Kim; Ho Won Jang

doi:10.1002/cey2.321

Tailored BiVO₄/In₂O₃ nanostructures with boosted charge separation ability toward unassisted water splitting

Mi Gyoung Lee, Jin Wook Yang, Ik Jae Park, Tae Hyung Lee, Hoonkee Park, Woo Seok Cheon, Sol A. Lee, Hyungsoo Lee, Su Geun Ji, Jun Min Suh, Jooho Moon, Jin Young Kim, Ho Won Jang

Department of Materials Science and Engineering

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

Abstract

The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water splitting. Here, we first introduce indium oxide (In₂O₃) nanorods (NRs) as a novel electron transport layer for bismuth vanadate (BiVO₄) with a short charge diffusion length. In₂O₃ NRs reinforce the electron transport and hole blocking of BiVO₄, surpassing the state-of-the-art photoelectrochemical performances of BiVO₄-based photoanodes. Also, a tannin–nickel–iron complex (TANF) is used as an oxygen evolution catalyst to speed up the reaction kinetics. The final TANF/BiVO₄/In₂O₃ NR photoanode generates photocurrent densities of 7.1 mA cm⁻² in sulfite oxidation and 4.2 mA cm⁻² in water oxidation at 1.23 V versus the reversible hydrogen electrode. Furthermore, the “artificial leaf,” which is a tandem cell with a perovskite/silicon solar cell, shows a solar-to-hydrogen conversion efficiency of 6.2% for unbiased solar water splitting. We reveal significant advances in the photoactivity of TANF/BiVO₄/In₂O₃ NRs from the tailored nanostructure and band structure for charge dynamics.

Original language	English
Journal	Carbon Energy
DOIs	https://doi.org/10.1002/cey2.321
Publication status	Accepted/In press - 2023

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government Ministry of Science and ICT (MSIT) (2021M3H4A1A03057403, 2021R1A2B5B03001851). This research was supported by the KRISS (Korea Research Institute of Standards and Science) MPI Lab. Program. The Inter‐University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. M. G. Lee acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A03039988). J. W. Yang acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A13046700).

Publisher Copyright:
© 2023 Seoul National University. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Materials Science (miscellaneous)
Energy (miscellaneous)
Materials Chemistry

UN SDGs

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

Access to Document

10.1002/cey2.321

Cite this

@article{f133be13da11474e935455da499be7e9,

title = "Tailored BiVO4/In2O3 nanostructures with boosted charge separation ability toward unassisted water splitting",

abstract = "The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water splitting. Here, we first introduce indium oxide (In2O3) nanorods (NRs) as a novel electron transport layer for bismuth vanadate (BiVO4) with a short charge diffusion length. In2O3 NRs reinforce the electron transport and hole blocking of BiVO4, surpassing the state-of-the-art photoelectrochemical performances of BiVO4-based photoanodes. Also, a tannin–nickel–iron complex (TANF) is used as an oxygen evolution catalyst to speed up the reaction kinetics. The final TANF/BiVO4/In2O3 NR photoanode generates photocurrent densities of 7.1 mA cm−2 in sulfite oxidation and 4.2 mA cm−2 in water oxidation at 1.23 V versus the reversible hydrogen electrode. Furthermore, the “artificial leaf,” which is a tandem cell with a perovskite/silicon solar cell, shows a solar-to-hydrogen conversion efficiency of 6.2% for unbiased solar water splitting. We reveal significant advances in the photoactivity of TANF/BiVO4/In2O3 NRs from the tailored nanostructure and band structure for charge dynamics.",

author = "Lee, {Mi Gyoung} and Yang, {Jin Wook} and Park, {Ik Jae} and Lee, {Tae Hyung} and Hoonkee Park and Cheon, {Woo Seok} and Lee, {Sol A.} and Hyungsoo Lee and Ji, {Su Geun} and Suh, {Jun Min} and Jooho Moon and Kim, {Jin Young} and Jang, {Ho Won}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government Ministry of Science and ICT (MSIT) (2021M3H4A1A03057403, 2021R1A2B5B03001851). This research was supported by the KRISS (Korea Research Institute of Standards and Science) MPI Lab. Program. The Inter‐University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. M. G. Lee acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A03039988). J. W. Yang acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A13046700). Publisher Copyright: {\textcopyright} 2023 Seoul National University. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd.",

year = "2023",

doi = "10.1002/cey2.321",

language = "English",

journal = "Carbon Energy",

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AU - Lee, Mi Gyoung

AU - Yang, Jin Wook

AU - Park, Ik Jae

AU - Lee, Tae Hyung

AU - Park, Hoonkee

AU - Cheon, Woo Seok

AU - Lee, Sol A.

AU - Lee, Hyungsoo

AU - Ji, Su Geun

AU - Suh, Jun Min

AU - Moon, Jooho

AU - Kim, Jin Young

AU - Jang, Ho Won

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government Ministry of Science and ICT (MSIT) (2021M3H4A1A03057403, 2021R1A2B5B03001851). This research was supported by the KRISS (Korea Research Institute of Standards and Science) MPI Lab. Program. The Inter‐University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. M. G. Lee acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A03039988). J. W. Yang acknowledges the Basic Science Research Program through the NRF funded by the Ministry of Education (2021R1A6A3A13046700). Publisher Copyright: © 2023 Seoul National University. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd.

PY - 2023

Y1 - 2023

N2 - The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water splitting. Here, we first introduce indium oxide (In2O3) nanorods (NRs) as a novel electron transport layer for bismuth vanadate (BiVO4) with a short charge diffusion length. In2O3 NRs reinforce the electron transport and hole blocking of BiVO4, surpassing the state-of-the-art photoelectrochemical performances of BiVO4-based photoanodes. Also, a tannin–nickel–iron complex (TANF) is used as an oxygen evolution catalyst to speed up the reaction kinetics. The final TANF/BiVO4/In2O3 NR photoanode generates photocurrent densities of 7.1 mA cm−2 in sulfite oxidation and 4.2 mA cm−2 in water oxidation at 1.23 V versus the reversible hydrogen electrode. Furthermore, the “artificial leaf,” which is a tandem cell with a perovskite/silicon solar cell, shows a solar-to-hydrogen conversion efficiency of 6.2% for unbiased solar water splitting. We reveal significant advances in the photoactivity of TANF/BiVO4/In2O3 NRs from the tailored nanostructure and band structure for charge dynamics.

AB - The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water splitting. Here, we first introduce indium oxide (In2O3) nanorods (NRs) as a novel electron transport layer for bismuth vanadate (BiVO4) with a short charge diffusion length. In2O3 NRs reinforce the electron transport and hole blocking of BiVO4, surpassing the state-of-the-art photoelectrochemical performances of BiVO4-based photoanodes. Also, a tannin–nickel–iron complex (TANF) is used as an oxygen evolution catalyst to speed up the reaction kinetics. The final TANF/BiVO4/In2O3 NR photoanode generates photocurrent densities of 7.1 mA cm−2 in sulfite oxidation and 4.2 mA cm−2 in water oxidation at 1.23 V versus the reversible hydrogen electrode. Furthermore, the “artificial leaf,” which is a tandem cell with a perovskite/silicon solar cell, shows a solar-to-hydrogen conversion efficiency of 6.2% for unbiased solar water splitting. We reveal significant advances in the photoactivity of TANF/BiVO4/In2O3 NRs from the tailored nanostructure and band structure for charge dynamics.

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