Nanostructured BiVO4 obtained by the vanadium calcination of Bi2O3 nanohelixes for enhanced photoelectrochemical water splitting

Sucheol Ju; Noho Lee; Hansang Sung; Soomin Son; Nakhyun Kim; Jaerim Kim; Jong kyu Kim; Heon Lee

doi:10.1039/d3ta02056h

Nanostructured BiVO₄ obtained by the vanadium calcination of Bi₂O₃ nanohelixes for enhanced photoelectrochemical water splitting

Sucheol Ju, Noho Lee, Hansang Sung, Soomin Son, Nakhyun Kim, Jaerim Kim, Jong kyu Kim, Heon Lee

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

7 Citations (Scopus)

Abstract

Although BiVO₄ has been investigated as a promising photoanode for solar water splitting, the lack of a nanostructure synthesis method that provides the controllability of the stoichiometric composition prevents the realization of a high-performance BiVO₄ photoanode. This paper presents an effective and simple synthetic method for fabricating BiVO₄ with a high-quality and unique nanostructure from an array of Bi₂O₃ nanohelixes using oblique angle deposition via vanadium calcination. The porous open structure of the nanohelical Bi₂O₃ array facilitates the intrusion of vanadium solution during the solvothermal process, thus allowing for the formation of a BiVO₄ nanostructural array with high crystallinity. The combination of significant light-scattering, improved charge separation, and an enlarged active surface area allows for the unique BiVO₄ nanostructure to exhibit enhanced optical properties and a photocurrent density of 2.6 mA cm⁻² at 1.23 V versus the reversible hydrogen electrode.

Original language	English
Pages (from-to)	17644-17650
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	11
Issue number	33
DOIs	https://doi.org/10.1039/d3ta02056h
Publication status	Published - 2023 Jul 20

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT [grant numbers NRF-2019M3E6A1064521, NRF-2021M2E8A1049070, NRF-2020K1A3A1A19088593, NRF- 2022M3H4A1A02046445, NRF-2018M3D1A1058997, NRF-2019K1A47A02113032, and NRF-2017-Global PhD Fellowship Program] and the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) [20016234, Nano-molding materials with ultra-High refractive index for meta-lens].

Publisher Copyright:
© 2023 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

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

Access to Document

10.1039/d3ta02056h

Cite this

@article{83deb161aeb24a978112dfaa2c6f6c7a,

title = "Nanostructured BiVO4 obtained by the vanadium calcination of Bi2O3 nanohelixes for enhanced photoelectrochemical water splitting",

abstract = "Although BiVO4 has been investigated as a promising photoanode for solar water splitting, the lack of a nanostructure synthesis method that provides the controllability of the stoichiometric composition prevents the realization of a high-performance BiVO4 photoanode. This paper presents an effective and simple synthetic method for fabricating BiVO4 with a high-quality and unique nanostructure from an array of Bi2O3 nanohelixes using oblique angle deposition via vanadium calcination. The porous open structure of the nanohelical Bi2O3 array facilitates the intrusion of vanadium solution during the solvothermal process, thus allowing for the formation of a BiVO4 nanostructural array with high crystallinity. The combination of significant light-scattering, improved charge separation, and an enlarged active surface area allows for the unique BiVO4 nanostructure to exhibit enhanced optical properties and a photocurrent density of 2.6 mA cm−2 at 1.23 V versus the reversible hydrogen electrode.",

author = "Sucheol Ju and Noho Lee and Hansang Sung and Soomin Son and Nakhyun Kim and Jaerim Kim and Kim, {Jong kyu} and Heon Lee",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT [grant numbers NRF-2019M3E6A1064521, NRF-2021M2E8A1049070, NRF-2020K1A3A1A19088593, NRF- 2022M3H4A1A02046445, NRF-2018M3D1A1058997, NRF-2019K1A47A02113032, and NRF-2017-Global PhD Fellowship Program] and the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) [20016234, Nano-molding materials with ultra-High refractive index for meta-lens]. Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

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AU - Ju, Sucheol

AU - Lee, Noho

AU - Sung, Hansang

AU - Son, Soomin

AU - Kim, Nakhyun

AU - Kim, Jaerim

AU - Kim, Jong kyu

AU - Lee, Heon

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT [grant numbers NRF-2019M3E6A1064521, NRF-2021M2E8A1049070, NRF-2020K1A3A1A19088593, NRF- 2022M3H4A1A02046445, NRF-2018M3D1A1058997, NRF-2019K1A47A02113032, and NRF-2017-Global PhD Fellowship Program] and the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) [20016234, Nano-molding materials with ultra-High refractive index for meta-lens]. Publisher Copyright: © 2023 The Royal Society of Chemistry.

PY - 2023/7/20

Y1 - 2023/7/20

N2 - Although BiVO4 has been investigated as a promising photoanode for solar water splitting, the lack of a nanostructure synthesis method that provides the controllability of the stoichiometric composition prevents the realization of a high-performance BiVO4 photoanode. This paper presents an effective and simple synthetic method for fabricating BiVO4 with a high-quality and unique nanostructure from an array of Bi2O3 nanohelixes using oblique angle deposition via vanadium calcination. The porous open structure of the nanohelical Bi2O3 array facilitates the intrusion of vanadium solution during the solvothermal process, thus allowing for the formation of a BiVO4 nanostructural array with high crystallinity. The combination of significant light-scattering, improved charge separation, and an enlarged active surface area allows for the unique BiVO4 nanostructure to exhibit enhanced optical properties and a photocurrent density of 2.6 mA cm−2 at 1.23 V versus the reversible hydrogen electrode.

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