近日，北京工业大学庄春强团队报道了混合焓诱导的单分散Pb-Zr双原子催化剂用于高效光催化过氧化氢生产。这一研究成果于2026年3月31日发表在《结构化学》杂志上。

光生载流子的高效分离与利用仍然是光催化领域的核心挑战。双原子体系通过协同相互作用为调控载流子动力学提供了独特机遇，但其理性设计仍十分缺乏。

研究组提出一种基于混合焓的双原子光催化剂设计策略。在该理念指导下，成功在氮化碳（C₃N₄）载体上获得了PbZr双原子体系。该催化剂在光催化产过氧化氢（H₂O₂）中表现出卓越性能，产率高达69 mmol/g，是纯C₃N₄的2.7倍，并超越了相应的单原子光催化剂Pb-C₃N₄（37.1 mmol/g）和Zr-C₃N₄（41.1 mmol/g）。

载流子动力学研究表明，双原子之间的协同相互作用促进了高效的电荷分离与输运。机理研究揭示，PbZr-C₃N₄上H₂O₂的生成主要通过氧还原驱动的双电子路径进行。该工作确立了基于混合焓的理性设计原则，用于开发高效的氧还原反应双原子光催化剂。

附：英文原文

Title: Mixing enthalpy-induced monodispersed Pb-Zr dual-atomic cata-lysts for efficient photocatalytic hydrogen peroxide production

Author: anonymous

Issue&Volume: 2026-03-31

Abstract: Efficient separation and utilization of photogenerated carriers remain central challenges in photocatalysis. Dual-atom systems offer unique opportunities to regulate carrier dynamics through synergistic interactions, yet their rational designs are still lacking. Here, we propose a design strategy for dual-atom photocatalysts based on mixing enthalpy. Guided by this concept, a PbZr dual-atom system was successfully obtained on a carbon nitride support (C3N4). It exhibits outstanding performance in photocatalytic hydrogen peroxide (H2O2), delivering a yield of 69 mmol/g, which is 2.7 times higher than that of pristine C3N4 and surpasses the corresponding single-atom photocatalysts Pb-C3N4 (37.1 mmol/g) and Zr-C3N4 (41.1 mmol/g). Carrier dynamics reveals that synergistic interactions between dual atoms promotes efficient charge separation and transport. Mechanistic investigations demonstrate that H2O2 generation over PbZr-C3N4 proceeds predominantly via an oxygen reduction–driven two-electron pathway. This work establishes a mixing-enthalpy-guided principle for the rational design of efficient dual-atom photocatalysts for oxygen reduction reactions.

DOI: 10.1016/j.cjsc.2026.100940

Source: https://cjsc.ac.cn/cms/issues/1024