A MoS2 nanosheet-reduced graphene oxide hybrid: an efficient electrocatalyst for electrocatalytic N2 reduction to NH3 under ambient conditions

被引：154

作者：

Li, Xianghong ^{[1
]}

Ren, Xiang ^{[1
]}

Liu, Xuejing ^{[1
]}

Zhao, Jinxiu ^{[1
]}

Sun, Xu ^{[1
]}

Zhang, Yong ^{[1
]}

Kuang, Xuan ^{[1
]}

Yan, Tao ^{[1
]}

Wei, Qin ^{[1
]}

Wu, Dan ^{[1
]}

机构：

[1] Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2019年 / 7卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ATMOSPHERIC-PRESSURE; NITROGEN REDUCTION; HIGH SELECTIVITY; NANOWIRE ARRAY; EVOLUTION; AMMONIA; FIXATION; CATALYST; ELECTROSYNTHESIS; TEMPERATURE;

D O I：

10.1039/c8ta10433f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

NH3 production heavily relies on the traditional Haber-Bosch process, which is not only energy-intensive (1-3% of human's energy consumption) but also carbon-intensive (1.6% of global CO2 emissions). Electrochemical reduction offers a sustainable and eco-friendly alternative for NH3 synthesis. Despite tremendous efforts, developing N2 reduction reaction (NRR) electrocatalysts with high activity and durability remains a great challenge. Here, we firstly report a MoS2 nanosheet-reduced graphene oxide hybrid (MoS2-rGO) as a highperformance catalyst for the NRR. In 0.1 M LiClO4, this catalyst attains a high faradaic efficiency of 4.58% and a highNH(3) yield of 24.82 mg h(-1) mg(cat.)(-1) at -0.45 V vs. the reversible hydrogen electrode. Notably, such MoS2-rGO shows high electrochemical stability during electrolysis and recycling tests. Density functional theory calculations reveal that the potential-determining step of the proton-electron coupling transferring process is *NHNH2 -> *NH2NH2, and the following hydrogenation steps are feasible.

引用

页码：2524 / 2528

页数：5

共 59 条

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