Citation: Tiange Wei, Mengxia Ji, Yi Zhang, Keke Wang, Meng Wang, Yuanbin She, Jiexiang Xia, Huaming Li. Synergistic optimization of charge transfer and active sites in Bi₁₂O₁₇Br₂/CuTCPP for efficient CO₂ photoreduction[J]. Chinese Chemical Letters, ;2026, 37(6): 111988. doi: 10.1016/j.cclet.2025.111988 shu

Synergistic optimization of charge transfer and active sites in Bi₁₂O₁₇Br₂/CuTCPP for efficient CO₂ photoreduction

Tiange Wei ^a ,
Mengxia Ji ^a ,
Yi Zhang ^{a, c} ,
Keke Wang ^b ,
Meng Wang ^a ,
Yuanbin She ^{b, *,} ,
Jiexiang Xia ^{a, *,} ,
Huaming Li ^{a, *,}

a.
Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
b.
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
c.
Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China

sheyb@zjut.edu.cn

xjx@ujs.edu.cn

lhm@ujs.edu.cn

Received Date: 5 June 2025
Revised Date: 14 October 2025
Accepted Date: 20 October 2025
Available Online: 21 October 2025

Figures(6)

Utilizing sunlight to directly convert CO₂ into value-added chemicals presents a pivotal strategy for sustainable CO₂ conversion and mitigating environmental challenges. Herein, a surface-mounted 5,10,15,20-tetra(4-carboxyphenyl)porphyrin copper(Ⅱ) (CuTCPP) anchoring on Bi₁₂O₁₇Br₂ nanotubes (CuTCPP/Bi₁₂O₁₇Br₂) heterojunction was employed as an operable platform for photocatalytic CO₂ reduction. The built-in electric field at the interface facilitates the efficient electron transfer from Bi₁₂O₁₇Br₂ to CuTCPP, significantly enhancing photoexcited charge separation and transfer kinetics. Besides, the Cu(Ⅱ) sites in CuTCPP act as supplementary catalytic centers that reduce the adsorption and activation energy barrier of CO₂, thus accelerating the formation of *CO intermediates. The CuTCPP/Bi₁₂O₁₇Br₂ heterojunction exhibits enhanced photoreduction activity of CO₂, achieving a CO evolution rate of 92.2 μmol g^-1 h^-1, which represents a 4.0-fold enhancement over Bi₁₂O₁₇Br₂. This work offers new insights into the development of heterojunctions with synergistically optimized charge transfer and active sites.
- Charge transfer,
- Active sites,
- Cu porphyrin,
- CO₂ photoreduction
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Synergistic optimization of charge transfer and active sites in Bi12O17Br2/CuTCPP for efficient CO2 photoreduction

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Synergistic optimization of charge transfer and active sites in Bi₁₂O₁₇Br₂/CuTCPP for efficient CO₂ photoreduction