Efficient Electrochemical N2 Reduction to NH3 on MoN Nanosheets Array under Ambient Conditions

被引：238

作者：

Zhang, Ling ^{[1
,2
]}

Ji, Xuqiang ^{[1
]}

Ren, Xiang ^{[1
]}

Luo, Yonglan ^{[1
]}

Shi, Xifeng ^{[3
]}

Asiri, Abdullah M. ^{[4
,5
]}

Zheng, Baozhan ^{[2
]}

Sun, Xuping ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[2] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China

[3] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China

[4] King Abdulaziz Univ, Chem Dept, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia

[5] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, POB 80203, Jeddah 21589, Saudi Arabia

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2018年 / 6卷 / 08期

基金：

中国国家自然科学基金;

关键词：

MoN nanosheets array; Non-noble-metal catalyst; Electrocatalysis; N-2 reduction reaction; Ambient conditions; METAL NITRIDE CATALYSTS; AMMONIA-SYNTHESIS; ATMOSPHERIC-PRESSURE; NANOWIRE ARRAYS; NITROGEN; WATER; HYDROGEN; CATHODE; ELECTROCATALYSIS; TEMPERATURE;

D O I：

10.1021/acssuschemeng.8b01438

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical N-2 reduction reaction (NRR) under ambient conditions offers us an environmentally friendly route for artificial synthesis of NH3. However, up to now, few noble-metal-free electrocatalysts with satisfactory catalytic activities have been explored. In this Letter, we demonstrate that MoN nanosheets array on carbon cloth (MoN NA/CC) acts as a high-performance NRR electrocatalyst toward NH3 electrosynthesis in 0.1 M HCl under ambient conditions. This catalyst achieves a large NH3 yield of 3.01 x 10(-10) mol s(-1) cm(-2) and a Faradaic efficiency of 1.15% at -0.3 V vs reversible hydrogen electrode with strong electrochemical durability and selectivity. Density functional theory calculations reveal that MoN NA/CC catalyzes NRR via the Mars-van Krevelen mechanism.

引用

页码：9550 / 9554

页数：9

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