The in-built bionic “MoFe cofactor” in Fe-doped two-dimensional MoTe2 nanosheets for boosting the photocatalytic nitrogen reduction performance,Journal of Materials Chemistry A

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The in-built bionic “MoFe cofactor” in Fe-doped two-dimensional MoTe2 nanosheets for boosting the photocatalytic nitrogen reduction performance
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-05-28 , DOI: 10.1039/d0ta04251j
Hongda Li _{1,

2,

3,

4,

5} , Shaonan Gu _{5,

6,

7,

8,

9} , Zijun Sun _{1,

2,

3,

4,

5} , Fei Guo _{1,

2,

3,

4,

5} , Yuanmiao Xie _{1,

2,

3,

4,

5} , Boran Tao _{1,

2,

3,

4,

5} , Xiong He _{1,

2,

3,

4,

5} , Wenfeng Zhang _{10,

11,

12,

13,

14} , Haixin Chang _{10,

11,

12,

13,

14}

Affiliation

Center for Materials Science and Engineering
School of Mechanical and Transportation Engineering
Guangxi University of Science and Technology
Liuzhou
China
Key Laboratory of Fine Chemicals in Universities of Shandong
School of Chemistry and Pharmaceutical Engineering
Qilu University of Technology (Shandong Academy of Sciences)
Jinan
Quantum-Nano Matter and Device Lab
State Key Laboratory of Material Processing and Die & Mould Technology
School of Materials Science and Engineering
Huazhong University of Science and Technology
Wuhan 430074

In biological nitrogen fixation systems, the MoFe cofactor of nitrogenase plays a crucial role in enhancing the activation of dinitrogen to drive the nitrogen reduction reaction. However, the development of effective bionic inorganic photocatalysts still remains a great challenge and the photocatalytic system of both Mo- and Fe-based semiconductors for nitrogen reduction is rarely studied. In this work, a novel photocatalytic nitrogen reduction bionic system based on Fe-doped two-dimensional MoTe₂ nanosheets has been proposed. The bionic “MoFe cofactor” formed by introducing iron into MoTe₂ can effectively facilitate the transport and separation of photo-generated charge carriers by one-electron and two-electron redox reactions and 15 times longer photocarrier lifetime. As a result, the photocatalytic nitrogen reduction activity of Fe-doped MoTe₂ is obviously boosted, which is about 11-fold higher in comparison to that of pure MoTe₂. The presented work provides an effective route to design novel bionic Mo–Fe inorganic two-dimensional semiconductor photocatalysts for nitrogen reduction.

中文翻译：

掺铁二维MoTe2纳米片中的内置仿生“ MoFe辅助因子”，可提高光催化氮还原性能

在生物固氮系统中，固氮酶的MoFe辅因子在增强二氮的活化以驱动氮还原反应中起着至关重要的作用。然而，有效的仿生无机光催化剂的开发仍然是一个巨大的挑战，很少研究钼和铁基半导体用于氮还原的光催化体系。在这项工作中，提出了一种基于Fe掺杂的二维MoTe ₂纳米片的新型光催化氮还原仿生系统。通过将铁引入MoTe ₂形成的仿生“ MoFe辅助因子”通过一电子和两电子氧化还原反应可以有效地促进光生电荷载流子的传输和分离，并使光载流子寿命延长15倍。结果，掺杂Fe的MoTe ₂的光催化氮还原活性显着提高，与纯MoTe ₂相比，高约11倍。提出的工作为设计新型的用于还原氮的仿生Mo-Fe无机二维半导体光催化剂提供了一条有效途径。

更新日期：2020-07-07

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