石墨二炔@Janus磁铁矿用于光催化固氮，这一成果由中国科学院化学研究所Yuliang Li研究团队经过不懈努力而取得。 相关论文于2020年10月27日发表在国际学术期刊《德国应用化学》上。

研究人员设计并制造了一个具有高活性的石墨二炔异质结与高效的光催化相结合。该催化剂在光催化合成氨反应上表现出转化性能。这种优异的性能是由于石墨二炔含有Fe位点特定的磁铁矿，从而导致催化剂中的价态转变。结果显示石墨二炔在有效调节磁铁矿活性和配位环境上的强大优势，同时揭示了磁铁矿可以选择性地形成两种不同价态的四面体配位Fe和八面体配位Fe。

该催化剂对光催化合成氨表现出显著的催化性能，表现出优异的转化光催化活性，氨产率(YNH3)达到前所未有的1762.35±153.71 μmol h^-1 gcat ^-1(最高可达1916.06 μmol h^-1 gcat ^-1)。这项工作充分利用了石墨二炔的结构和性质特点，在催化领域为光催化开辟了一个新的方向。

附：英文原文

Title: Graphdiyne@Janus Magnetite for Photocatalysis Nitrogen Fixation

Author: Yuliang Li, Yan Fang, Yurui Xue, Lan Hui, Huidi Yu

Issue&Volume:

Abstract: A highly active graphdiyne heterojunction integrated with high‐efficiency photocatalysis is designed and fabricated. This catalyst demonstrates transformative properties on photocatalysis for ammonia synthesis. Such excellent properties are reigned from graphdiyne incorporating Fe site‐specific magnetite resulting in a valence state transition within the catalyst. Our results show the strong advantages of graphdiyne in effectively regulating magnetite activity and coordination environments and also indicate that magnetite can selectively form two different valence tetrahedral coordination Fe and octahedral coordination Fe. The catalysts show remarkable catalytic performance for ammonia synthesis by photocatalysis, indicating transformative photocatalytic activity with an ammonia yield (Y  NH3  ) of unprecedented level of 1762.35 ± 153.71 μmol h  ‐1  g  cat.  ‐1  (the highest Y  NH3  could reach up to 1916.06 μmol h  ‐1  g  cat.  ‐1  ). This work makes full use of the structural and property features of graphdiyne and opens up a new direction for photocatalysis in the field of catalysis.

DOI: 10.1002/anie.202012357

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202012357