Edge-hosted CoFeB active sites with graphene nanosheets for highly selective nitrogen reduction reaction towards ambient ammonia synthesis

被引：8

作者：

Arif, Muhammad ^{[1
,2
]}

Kumar, Anuj ^{[3
,11
]}

Mushtaq, Muhammad Asim ^{[4
]}

Azhar, Umair ^{[1
]}

Sagir, Muhammad ^{[1
]}

Tahir, Muhammad Bilal ^{[5
,10
]}

Talib, Unaiza ^{[6
]}

Ajmal, Saira ^{[4
]}

Alotaibi, Khalid M. ^{[7
]}

Yasin, Ghulam ^{[4
,8
,9
]}

机构：

[1] Khwaja Fareed Univ Engn & Informat Technol, Inst Chem & Environm Engn, Rahim Yar Khan 64200, Punjab, Pakistan

[2] Khwaja Fareed Univ Engn & Informat Technol, Ctr Thermal & Renewable Energy Res, Rahim Yar Khan 64200, Punjab, Pakistan

[3] GLA Univ, Dept Chem, Nanotechnol Res Lab, Mathura 281406, Uttar Pradesh, India

[4] Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Guangdong, Peoples R China

[5] Khwaja Fareed Univ Engn & Informat Technol, Inst Phys, Rahim Yar Khan 64200, Punjab, Pakistan

[6] Khwaja Fareed Univ Engn & Informat Technol, Inst Chem, Rahim Yar Khan, Punjab, Pakistan

[7] King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia

[8] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300350, Peoples R China

[9] Dongguan Univ Technol, Sch Environm & Civil Engn, Dongguan 523808, Guangdong, Peoples R China

[10] Khwaja Fareed Univ Engn & Informat Technol, Ctr Innovat Mat Res, Rahim Yar Khan 64200, Punjab, Pakistan

[11] GLA Univ, Dept Chem, Nanotechnol Res Lab, Mathura 281406, Uttar Pradesh, India

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 473卷 / 473期

基金：

中国国家自然科学基金;

关键词：

Electrocatalysis; Enfolded and interconnected micro/; nanostructures; CoFeB@rGO heterostructures; Nitrogen reduction reaction; NH; 3; synthesis; pH universal; DOPED GRAPHENE; N-2; NANOPARTICLES; EFFICIENT; ELECTROCATALYSTS; NH3;

D O I：

10.1016/j.cej.2023.145368

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Electrocatalytic nitrogen reduction reaction (NRR) offers a suitable alternative to the conventional high energy intensive Haber-Bosch process for ambient ammonia (NH3) production without the release of greenhouse gases. Herein, a chemical reduction method is employed to effectively fabricate a hierarchical 3D nanostructure composed of CoFeB nanospheres precisely enveloped and interconnected with dynamically adaptable reduced graphene oxide (rGO) nanosheets for electrocatalytic NRR. Interconnected 3D CoFeB@ rGO nanostructures selectively reduced gaseous N2 to NH3 and demonstrated high Faradaic efficiency (31.6%) and NH3 yield rate (35 & mu;g h-1 mg-1) at - 0.2 V in 0.05 M H2SO4, comparable to various state-of-the-art electrocatalytic materials for ambient NRR. Density functional theory (DFT) simulations additionally verify that interconnected CoFeB nanospheres with mechanically flexible graphene nanosheets are beneficial in lowering the energy threshold for N2 adsorption and successive protonation. First example of CoFeB@rGO heterostructures as electrocatalysts for high efficiency, pH-universal NRR to NH3 synthesis is highlighted in this study.

引用

页数：11