Strengthening Bonding Interaction of a (Co0.91V0.09)3(BTC)2 Metal-Organic Framework with BiVO4 Photoanodes Enabling Ultrastable Photoelectrochemical Water Oxidation

Liangcheng Xu; Yingjuan Zhang; Boyan Liu; Kang Wan; Xin Wang; Tingsheng Wang; Lianzhou Wang; Songcan Wang; Wei Huang

doi:10.1021/acsnano.5c01111

Strengthening Bonding Interaction of a (Co_0.91V_0.09)₃(BTC)₂ Metal-Organic Framework with BiVO₄ Photoanodes Enabling Ultrastable Photoelectrochemical Water Oxidation

Liangcheng Xu, Yingjuan Zhang, Boyan Liu, Kang Wan, Xin Wang, Tingsheng Wang, Lianzhou Wang, Songcan Wang, Wei Huang

Institute of Flexible Electronics

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

Abstract

Although the oxygen evolution reaction (OER) activity of BiVO₄ photoanodes has been significantly enhanced, achieving long-term photostability is still challenging due to the gradual dissolution of V⁵⁺ during photoelectrochemical (PEC) water splitting. Herein, we deliberately generate ligand defects in a (Co_0.91V_0.09)₃(BTC)₂ metal-organic framework (CoV-MOF) that creates more undercoordinated sites, forming strong chemical bonds with BiVO₄. Consequently, the dissolution of V⁵⁺ from BiVO₄ during PEC water splitting can be effectively suppressed, leading to significantly enhanced stability. The optimized Co₃O₄/CoV-MOF/BiVO₄ photoanode exhibits a high photocurrent density of 6.0 mA cm^-2 at 1.23 V vs the reversible hydrogen electrode (RHE). Impressively, the photoanode can stably operate for 500 h at 0.6 V vs RHE under AM 1.5 G illumination. This work demonstrates the proof-of-concept of anchoring V⁵⁺ in BiVO₄ photoanodes achieving ultrastable PEC water splitting.

Original language	English
Pages (from-to)	15863-15875
Number of pages	13
Journal	ACS Nano
Volume	19
Issue number	16
DOIs	https://doi.org/10.1021/acsnano.5c01111
State	Published - 29 Apr 2025

Keywords

anchoring vanadium ions
enhanced stability
ligand defects
strengthening bonding interaction
water splitting

UN SDGs

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

Access to Document

10.1021/acsnano.5c01111

Cite this

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title = "Strengthening Bonding Interaction of a (Co0.91V0.09)3(BTC)2 Metal-Organic Framework with BiVO4 Photoanodes Enabling Ultrastable Photoelectrochemical Water Oxidation",

abstract = "Although the oxygen evolution reaction (OER) activity of BiVO4 photoanodes has been significantly enhanced, achieving long-term photostability is still challenging due to the gradual dissolution of V5+ during photoelectrochemical (PEC) water splitting. Herein, we deliberately generate ligand defects in a (Co0.91V0.09)3(BTC)2 metal-organic framework (CoV-MOF) that creates more undercoordinated sites, forming strong chemical bonds with BiVO4. Consequently, the dissolution of V5+ from BiVO4 during PEC water splitting can be effectively suppressed, leading to significantly enhanced stability. The optimized Co3O4/CoV-MOF/BiVO4 photoanode exhibits a high photocurrent density of 6.0 mA cm-2 at 1.23 V vs the reversible hydrogen electrode (RHE). Impressively, the photoanode can stably operate for 500 h at 0.6 V vs RHE under AM 1.5 G illumination. This work demonstrates the proof-of-concept of anchoring V5+ in BiVO4 photoanodes achieving ultrastable PEC water splitting.",

keywords = "anchoring vanadium ions, enhanced stability, ligand defects, strengthening bonding interaction, water splitting",

author = "Liangcheng Xu and Yingjuan Zhang and Boyan Liu and Kang Wan and Xin Wang and Tingsheng Wang and Lianzhou Wang and Songcan Wang and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2025 American Chemical Society.",

year = "2025",

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doi = "10.1021/acsnano.5c01111",

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T1 - Strengthening Bonding Interaction of a (Co0.91V0.09)3(BTC)2 Metal-Organic Framework with BiVO4 Photoanodes Enabling Ultrastable Photoelectrochemical Water Oxidation

AU - Xu, Liangcheng

AU - Zhang, Yingjuan

AU - Liu, Boyan

AU - Wan, Kang

AU - Wang, Xin

AU - Wang, Tingsheng

AU - Wang, Lianzhou

AU - Wang, Songcan

AU - Huang, Wei

PY - 2025/4/29

Y1 - 2025/4/29

N2 - Although the oxygen evolution reaction (OER) activity of BiVO4 photoanodes has been significantly enhanced, achieving long-term photostability is still challenging due to the gradual dissolution of V5+ during photoelectrochemical (PEC) water splitting. Herein, we deliberately generate ligand defects in a (Co0.91V0.09)3(BTC)2 metal-organic framework (CoV-MOF) that creates more undercoordinated sites, forming strong chemical bonds with BiVO4. Consequently, the dissolution of V5+ from BiVO4 during PEC water splitting can be effectively suppressed, leading to significantly enhanced stability. The optimized Co3O4/CoV-MOF/BiVO4 photoanode exhibits a high photocurrent density of 6.0 mA cm-2 at 1.23 V vs the reversible hydrogen electrode (RHE). Impressively, the photoanode can stably operate for 500 h at 0.6 V vs RHE under AM 1.5 G illumination. This work demonstrates the proof-of-concept of anchoring V5+ in BiVO4 photoanodes achieving ultrastable PEC water splitting.

AB - Although the oxygen evolution reaction (OER) activity of BiVO4 photoanodes has been significantly enhanced, achieving long-term photostability is still challenging due to the gradual dissolution of V5+ during photoelectrochemical (PEC) water splitting. Herein, we deliberately generate ligand defects in a (Co0.91V0.09)3(BTC)2 metal-organic framework (CoV-MOF) that creates more undercoordinated sites, forming strong chemical bonds with BiVO4. Consequently, the dissolution of V5+ from BiVO4 during PEC water splitting can be effectively suppressed, leading to significantly enhanced stability. The optimized Co3O4/CoV-MOF/BiVO4 photoanode exhibits a high photocurrent density of 6.0 mA cm-2 at 1.23 V vs the reversible hydrogen electrode (RHE). Impressively, the photoanode can stably operate for 500 h at 0.6 V vs RHE under AM 1.5 G illumination. This work demonstrates the proof-of-concept of anchoring V5+ in BiVO4 photoanodes achieving ultrastable PEC water splitting.

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