Triggering Heteroatom Ensemble Effect over RuFe Alloy to Promote Nitrogen Chemisorption for Efficient Ammonia Electrosynthesis at Ambient Conditions.

Liu, Sisi; He, Yanzheng; Cheng, Qiyang; Huan, Yunfei; Yuan, Xiaolei; Liu, Jie; Shen, Xiaowei; Wang, Mengfan; Yan, Chenglin; Qian, Tao

Liu, Sisi; He, Yanzheng; Cheng, Qiyang; Huan, Yunfei; Yuan, Xiaolei; Liu, Jie; Shen, Xiaowei; Wang, Mengfan; Yan, Chenglin; Qian, Tao.

Afiliación

Liu S; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
He Y; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Cheng Q; Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou 215006, China.
Huan Y; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Yuan X; Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou 215006, China.
Liu J; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Shen X; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Wang M; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Yan C; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Qian T; Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou 215006, China.

J Phys Chem Lett ; 15(35): 8990-8996, 2024 Sep 05.

Article en En | MEDLINE | ID: mdl-39186307

ABSTRACT

ABSTRACT

Ammonia (NH3) electrosynthesis from nitrogen (N2) provides a promising strategy for carbon neutrality, circumventing the energy-intensive and carbon-emitting Haber-Bosch process. However, the current system still presents unsatisfactory performance, and the bottleneck lies in the rational synthesis of catalytic centers with efficient N2 chemisorption ability. Herein, a heteroatom ensemble effect is deliberately triggered over RuFe alloy with spatial proximity of metal sites to promote electrocatalytic nitrogen reduction. The heteronuclear RuFe ensemble with increased surface polarization and modulated electronic structure offers the feasibility to optimize the adsorption configuration of electroactive substances and facilitate chemical bond scission. The promotion of N2 chemisorption and the following hydrogenation are demonstrated by the in situ Fourier transform infrared spectroscopy characterizations. The catalyst thus permits significantly enhanced conversion of N2 to NH3 in a 0.1 M HCl environment, with a maximum ammonia yield rate of 75.45 µg h-1 mg-1 and a high Faradaic efficiency of 35.49%.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos

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