Citation: Hequn Yang, Fei Rao, Dean Pan, Liu Chen, Numan Abbas, Gangqiang Zhu. Rare earth praseodymium single atoms on g-C₃N₄ tubes for enhanced in-plane charge transfer towards H₂O₂ production in pure water[J]. Acta Physico-Chimica Sinica, ;2026, 42(6): 100210. doi: 10.1016/j.actphy.2025.100210 shu

Rare earth praseodymium single atoms on g-C₃N₄ tubes for enhanced in-plane charge transfer towards H₂O₂ production in pure water

Hequn Yang ^{1, 2} ,
Fei Rao ^1,, ,
Dean Pan ² ,
Liu Chen ¹ ,
Numan Abbas ¹ ,
Gangqiang Zhu ^1,,

1.
Quantum Materials and Devices Key Laboratory of Shaanxi Province's High Education Institution, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, Shaanxi Province, China
2.
Jiangxi Jingshun Low Carbon Technology Co., Ltd., Gaoan 330899, Jiangxi Province, China

Corresponding author: Fei Rao, rf612527@snnu.edu.cn Gangqiang Zhu, zgq2006@snnu.edu.cn
Received Date: 7 September 2025
Revised Date: 21 October 2025
Accepted Date: 22 October 2025

Hydrogen peroxide (H₂O₂) is regarded as an ecologically sustainable oxidant with broad applications. Photocatalytic generation of H₂O₂ from pure water and oxygen offers a green and energy-efficient alternative to conventional processes. Here, single-atom praseodymium (Pr) was anchored onto tubular porous graphitic carbon nitride (Pr-TCN) via a simple impregnation method for visible-light-induced H₂O₂ production (λ ≥ 420 nm). The isolated Pr sites accelerate the in-plane charge transfer by establishing a smooth and flexible transfer pathway for photogenerated electrons, and promote ^*OOH intermediate formation, thereby enhancing water oxidation. The optimized 5% Pr-TCN achieves a H₂O₂ generation rate of 227.37 μmol g⁻¹ h⁻¹, 1.8 times higher than unadulterated TCN. This work demonstrates a scalable single-atom engineering strategy for developing efficient photocatalysts for sustainable H₂O₂ production.
- Pr single-atom,
- Visible-light-induced oxygen reduction,
- Hydrogen peroxide production,
- Polymeric carbon nitride
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Rare earth praseodymium single atoms on g-C3N4 tubes for enhanced in-plane charge transfer towards H2O2 production in pure water

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Rare earth praseodymium single atoms on g-C₃N₄ tubes for enhanced in-plane charge transfer towards H₂O₂ production in pure water