催化作用
等离子体子
表面等离子共振
吸附
多孔性
材料科学
价(化学)
氮气
光化学
化学工程
极化(电化学)
价电子
多孔介质
纳米技术
化学
纳米颗粒
电子
物理化学
有机化学
光电子学
复合材料
工程类
物理
量子力学
作者
Tingting Hou,Lanlan Chen,Xin Yue,Wenkun Zhu,Chongyang Zhang,Wenhua Zhang,Shuquan Liang,Liangbing Wang
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2020-06-26
卷期号:5 (7): 2444-2451
被引量:44
标识
DOI:10.1021/acsenergylett.0c00959
摘要
Developing low-cost Cu-based photocatalysts is a promising strategy to boost catalytic activity for nitrogen (N2) photofixation, but it remains a challenge. Herein, we successfully applied porous CuFe to construct plasmon-assisted Cu-based photocatalysts in N2 photofixation via plasmonic catalysis. Surface Fe atoms were regarded as the active sites to efficiently adsorb and activate N2, while Cu frameworks generated hot electrons by surface plasmon resonance (SPR). Impressively, porous Cu96Fe4 attained an NH3 production rate of 342 μmol·gcat.–1·h–1 in N2 photofixation without any sacrificial agents. More importantly, porous Cu96Fe4 also displayed excellent stability by maintaining ∼100% initial activity after 10 cycles. Further mechanistic studies revealed that the valence state and coordination numbers of Fe atoms in porous Cu96Fe4 increased during catalytic process, indicating the formation of a surface nitrogen-containing complex. In addition, the reaction barrier significantly decreased because of the efficient polarization of N2 over Fe atoms.
科研通智能强力驱动
Strongly Powered by AbleSci AI