光催化
磁铁矿
八面体
杰纳斯
价(化学)
化学
异质结
化学工程
无机化学
材料科学
纳米技术
催化作用
晶体结构
结晶学
有机化学
冶金
工程类
光电子学
作者
Yan Fang,Yurui Xue,Lan Hui,Haitao Yu,Yuliang Li
标识
DOI:10.1002/anie.202012357
摘要
Abstract A highly active graphdiyne heterojunction with highly efficient 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 ) of unprecedented level of 1762.35±153.71 μmol h −1 g cat. −1 (the highest Y 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.
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