东北师范大学朱广山报道了在UiO-66-NH₂晶体中约束合成原子铜锚定聚合氮化碳，用于高性能CO₂到CH₃OH的光催化。相关研究成果于2024年7月29日发表在《德国应用化学》。

光催化二氧化碳还原为增值燃料显示了一种有吸引力的场景，可以增加能源供应并减少全球变暖。

该文中，研究人员报告了在晶体UiO-66-NH₂内掺入Cu单原子（CuSAs）的聚合物氮化碳（PCN）的限制合成，该方法结合了异质结光催化和单原子催化（SAC）的优点，实现了高性能的CO₂到CH₃OH的转化。一系列光谱研究显示了CuSAs@PCN在晶体UiO-66-NH²内部。

值得注意的是，三元复合材料对CO₂到CH₃OH的转化显示出4.15 mmol·h^-1·g^-1的优异光催化转换频率。理论和实验研究表明，CuSAs的掺杂以及II型异质结的形成是实现CH₃OH生成的原因。

该研究为设计高性能光催化剂以在原子尺度上，将二氧化碳转化为燃料提供了新的见解。

附：英文原文

Title: Confinement Synthesis of Atomic Copper-Anchored Polymeric Carbon Nitride in Crystalline UiO-66-NH2 for High-Performance CO2-to-CH3OH Photocatalysis

Author: Xingbing Liu, Changyan Zhu, Mengying Li, Hongzhu Xing, Siyang Zhu, Xin Liu, Guangshan Zhu

Issue&Volume: 2024-07-29

Abstract: Photocatalytic CO2 reduction to value-added fuels displays an attractive scenario to enhance energy supply and reduce global warming. We report herein the confinement synthesis of polymeric carbon nitride (PCN) incorporating with Cu single atoms (CuSAs) inside the crystalline UiO-66-NH2, which combines the merits of heterojunction photocatalysis and single-atom catalysis (SAC) to achieve high-performance CO2-to-CH3OH conversion. A series of spectral studies displays the formation of CuSAs@PCN inside the crystalline UiO-66-NH2. Remarkably, the ternary composite shows an excellent photocatalytic turnover frequency of 4.15 mmol·h-1·g-1 for CO2-to-CH3OH conversion. Theoretical and experimental studies demonstrate the doping of CuSAs, as well as the formation of type-II heterojunction, are causal factors to achieve CH3OH generation. The study provides new insights designing high-performance photocatalyst for CO2 conversion to fuels at atomic scale.

DOI: 10.1002/anie.202412408

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202412408