Ambient ammonia production via selective electroreduction of nitrite by NiCu@TiO2 nanoribbon array

被引：2
|
作者：
Cai, Li [1 ]
Zhang, Ailin [1 ]
Liang, Yimei [2 ]
Fan, Xiaoya [2 ]
He, Xun [2 ]
Yang, Congling [1 ]
Ouyang, Ling [2 ]
Zheng, Dongdong [3 ]
Sun, Shengjun [3 ]
Luo, Yonglan [2 ]
Liu, Qian [4 ]
Alfai, Sulaiman [5 ]
Farouk, Asmaa [6 ]
Hamdy, Mohamed S. [6 ]
Zheng, Wei [7 ]
Kong, Qingquan [4 ]
Sun, Xuping [2 ,3 ]
机构：
[1] Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610066, Sichuan, Peoples R China
[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China
[3] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China
[4] Chengdu Univ, Inst Adv Study, Chengdu 610106, Sichuan, Peoples R China
[5] King Abdulaziz Univ, Fac Sci, Chem Dept, Jeddah 21589, Saudi Arabia
[6] King Khalid Univ, Coll Sci, Dept Chem, POB 9004, Abha 61413, Saudi Arabia
[7] Sichuan Prov Financial Supervis Adm, Chengdu 610041, Sichuan, Peoples R China
来源：
MATERIALS TODAY ENERGY | 2023年 / 38卷
关键词：
Electrocatalysis; NiCu@TiO2 nanoribbon array; NO2-; reduction; NH3; production; Density functional theory; REDUCTION; GRAPHENE; NITRATE;
D O I：
10.1016/j.mtener.2023.101428
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：
Electrochemical nitrite (NO2-) reduction has the dual nature of alleviating NO2- pollution in water and converting it into beneficial ammonia (NH3). But highly active electrocatalysts are needed to overcome the slow kinetics of six-electron transfer. Herein, we report a nickel-copper bimetallic nanoparticle-decorated TiO2 nanoribbon array on a titanium plate (NiCu@TiO2/TP) as a high-efficiency catalyst for NH3 production. As expected, such an electrocatalyst displays a maximum Faradaic efficiency (FE) of 96.25% and a high NH3 yield of 688.97 mu mol/h/cm(2) at -0.5 V. Moreover, NiCu@TiO2/TP shows remarkable durability and stability during recycling tests. And the reaction mechanism is also investigated by theoretical calculations.(c) 2023 Elsevier Ltd. All rights reserved.
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页数：7
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