Single Atoms of Iron on MoS2Nanosheets for N2Electroreduction into Ammonia

被引：181

作者：

Su, Hongyang ^{[1
]}

Chen, Lanlan ^{[2
,3
]}

Chen, Yizhen ^{[1
]}

Si, Rui ^{[4
]}

Wu, Yuting ^{[1
]}

Wu, Xiaonan ^{[1
]}

Geng, Zhigang ^{[1
]}

Zhang, Wenhua ^{[2
,3
]}

Zeng, Jie ^{[1
]}

机构：

[1] Univ Sci & Technol China, Anhui Higher Educ Inst,Dept Chem Phys, Key Lab Surface & Interface Chem & Energy Catalys, Hefei Natl Lab Phys Sci Microscale,CAS Key Lab St, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

[4] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201210, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 46期

关键词：

ammonia; electrochemistry; heterogeneous catalysis; iron; nanostructures; ACTIVE EDGE SITES; NITROGEN-FIXATION; REDUCTION; MOS2; EVOLUTION; CO2;

D O I：

10.1002/anie.202009217

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Efforts have been devoted to achieving a highly efficient artificial synthesis of ammonia (NH3). Reported herein is a novel Fe-MoS(2)catalyst with Fe atomically dispersed onto MoS(2)nanosheets, imitating natural nitrogenase, to boost N(2)electroreduction into NH(3)at room temperature. The Fe-MoS(2)nanosheets exhibited a faradic efficiency of 18.8 % with a yield rate of 8.63 mu gNH3 mg(cat.)(-1) h(-1)for NH(3)at -0.3 V versus the reversible hydrogen electrode. The mechanism study revealed that the electroreduction of N(2)was promoted and the competing hydrogen evolution reaction was suppressed by decorating the edge sites of S in MoS(2)with the atomically dispersed Fe, resulting in high catalytic performance for the electroreduction of N(2)into NH3. This work provides new ideas for the design of catalysts for N(2)electroreduction and strengthens the understanding about N(2)activation over Mo-based catalysts.

引用

页码：20411 / 20416

页数：6

共 46 条

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