物理化学学报 >> 2026, Vol. 42 >> Issue (6): 100210.doi: 10.1016/j.actphy.2025.100210

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稀土镨单原子促进石墨相氮化碳管面内电荷转移以提升纯水中过氧化氢的产率

杨鹤群1,2, 饶斐1,*(), 潘德安2, 陈柳1, 努曼·阿巴斯1, 朱刚强1,*()   

  1. 1 陕西师范大学物理学与信息技术学院，量子材料与器件陕西省高等学校重点实验室，陕西 西安 710062
    2 江西京顺低碳科技有限公司, 江西 高安 330899
  • 收稿日期:2025-09-07 修回日期:2025-10-21 录用日期:2025-10-22 发布日期:2026-04-21
  • 通讯作者: Email: zgq2006@snnu.edu.cn Tel./Fax: +86-29-81530750 (朱刚强)rf612527@snnu.edu.cn (饶斐)

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

Hequn Yang1,2, Fei Rao1,*(), Dean Pan2, Liu Chen1, Numan Abbas1, Gangqiang Zhu1,*()   

  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
  • Received:2025-09-07 Revised:2025-10-21 Accepted:2025-10-22 Published:2026-04-21
  • Contact: Email: zgq2006@snnu.edu.cn Tel./Fax: +86-29-81530750 (Gangqiang Zhu)rf612527@snnu.edu.cn (Fei Rao)

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摘要：

过氧化氢(H2O2)被认为是一种具有广泛应用价值的生态可持续氧化剂。光催化纯水和氧气合成H2O2技术为传统工艺提供了一种绿色且节能的替代方案。本研究采用简单浸渍法将单原子镨(Pr)锚定在管状多孔石墨相氮化碳(Pr-TCN)上，通过可见光诱导(λ ≥ 420 nm)合成H2O2。孤立的Pr位点通过为光生电子建立平滑的传输路径，加速面内电荷转移，并促进*OOH中间体形成，从而增强H2O2生成效率。优化后的5% Pr-TCN实现了227.37 μmol g−1 h−1的H2O2生成速率，是纯TCN的1.8倍。这项工作展示了一种可扩展的单原子工程策略，用于开发高效光催化剂以实现可持续H2O2生产。

关键词: Pr单原子, 可见光诱导氧还原, 过氧化氢生产, 聚合碳氮化物

Abstract:

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.

Key words: Pr single-atom, Visible-light-induced oxygen reduction, Hydrogen peroxide production, Polymeric carbon nitride