Citation: Lina Wang, Hairu Wang, Qian Bu, Qiong Mei, Junbo Zhong, Bo Bai, Qizhao Wang. Al-O bridged NiFeO_x/BiVO₄ photoanode for exceptional photoelectrochemical water splitting[J]. Chinese Chemical Letters, ;2025, 36(4): 110139. doi: 10.1016/j.cclet.2024.110139 shu

Al-O bridged NiFeO_x/BiVO₄ photoanode for exceptional photoelectrochemical water splitting

Lina Wang ^{a, d} ,
Hairu Wang ^a ,
Qian Bu ^a ,
Qiong Mei ^a ,
Junbo Zhong ^c ,
Bo Bai ^a ,
Qizhao Wang ^{a, b, *,}

a.
School of Water and Environment, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang’an University, Xi’an 710054, China
b.
College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
c.
Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities, Sichuan University of Science & Engineering, Zigong 643000, China
d.
School of Engineering and Management, Shanxi Vocational University of Engineering Science and Technology, Jinzhong 030619, China

qzwang@chd.edu.cn

wangqizhao@163.com

Received Date: 14 February 2024
Revised Date: 19 May 2024
Accepted Date: 17 June 2024
Available Online: 18 June 2024

Figures(6)

Developing BiVO₄ photoanode with efficient carrier transfer and fast water oxidation kinetics is the permanent pursuit to achieve the state-of-art solar-driven photoelectrochemical (PEC) water splitting. The capacity to increase the PEC activity of BiVO₄ by loading oxygen evolution co-catalysts (OECs) has been proven, however it suffers from sluggish charge carriers dynamics brought on by the complicated interface between BiVO₄ and OECs as well as poor long-term durability. Herein, we connected OECs (NiFeO_x) and photoanode with a Al-O bridge for bettering the PEC performance of BiVO₄. The Al-O bridge served as a channel to extract hole from BiVO₄ to NiFeO_x, thus boosting charge carriers′ separation and preventing BiVO₄ from photo-corrosion. The Al-O bridging photoanode (NiFeO_x/Al₂O₃/BiVO₄) demonstrated a high photocurrent density of 5.87 mA/cm² at 1.23 V vs. RHE and long-term photostability in comparison to NiFeO_x/BiVO₄ photoanode. This study proposes a unique technique to boost charge carriers′ separation between BiVO₄ and OECs for high-efficiency solar-driven PEC water splitting.
- PEC,
- Photoanode,
- Bridge,
- OECs,
- Water splitting
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Al-O bridged NiFeOx/BiVO4 photoanode for exceptional photoelectrochemical water splitting

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通讯作者: 陈斌, bchen63@163.com

Al-O bridged NiFeO_x/BiVO₄ photoanode for exceptional photoelectrochemical water splitting