Zinc doped Fe2O3 for boosting Electrocatalytic Nitrogen Fixation to ammonia under mild conditions

Siqi YU; Qin WANG; Jianwei WANG; Yong XIANG; Xiaobin NIU; Tingshuai LI

doi:10.1016/j.ijhydene.2021.01.180

Zinc doped Fe₂O₃ for boosting Electrocatalytic Nitrogen Fixation to ammonia under mild conditions

Siqi YU, Qin WANG, Jianwei WANG, Yong XIANG, Xiaobin NIU^*, Tingshuai LI^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

20 Citations (Scopus)

Abstract

Artificial nitrogen fixation is emerging as a promising approach for synthesis of ammonia at mild conditions. Inspired by biological nitrogen fixation based on bacteria containing iron, zinc doped Fe₂O₃ nanoparticles are proposed as an efficient and earth abundant electrocatalyst for converting N₂ to NH₃. In neutral media, it achieves a maximum Faradaic efficiency (FE) of 10.4% and a large NH₃ yield rate of 15.1 μg h⁻¹ mg⁻¹_cat. at −0.5 V vs. reversible hydrogen electrode. This catalyst also exhibits excellent selectivity and stability. Theoretical calculations suggest the reaction follows the associative enzymatic mechanism and it has a barrier of as low as 0.68 eV.

Original language	English
Pages (from-to)	14331-14337
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	46
Issue number	27
Early online date	18 Feb 2021
DOIs	https://doi.org/10.1016/j.ijhydene.2021.01.180
Publication status	Published - 19 Apr 2021
Externally published	Yes

Funding

This work was supported by Department of Science and Technology of Sichuan Province (No. 2019YFG0138).

Keywords

Artificial nitrogen fixation
Electrocatalyst
Faradaic efficiency
Theoretical calculation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2021.01.180

Cite this

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title = "Zinc doped Fe2O3 for boosting Electrocatalytic Nitrogen Fixation to ammonia under mild conditions",

abstract = "Artificial nitrogen fixation is emerging as a promising approach for synthesis of ammonia at mild conditions. Inspired by biological nitrogen fixation based on bacteria containing iron, zinc doped Fe2O3 nanoparticles are proposed as an efficient and earth abundant electrocatalyst for converting N2 to NH3. In neutral media, it achieves a maximum Faradaic efficiency (FE) of 10.4% and a large NH3 yield rate of 15.1 μg h−1 mg−1cat. at −0.5 V vs. reversible hydrogen electrode. This catalyst also exhibits excellent selectivity and stability. Theoretical calculations suggest the reaction follows the associative enzymatic mechanism and it has a barrier of as low as 0.68 eV.",

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AU - YU, Siqi

AU - WANG, Qin

AU - WANG, Jianwei

AU - XIANG, Yong

AU - NIU, Xiaobin

AU - LI, Tingshuai

PY - 2021/4/19

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AB - Artificial nitrogen fixation is emerging as a promising approach for synthesis of ammonia at mild conditions. Inspired by biological nitrogen fixation based on bacteria containing iron, zinc doped Fe2O3 nanoparticles are proposed as an efficient and earth abundant electrocatalyst for converting N2 to NH3. In neutral media, it achieves a maximum Faradaic efficiency (FE) of 10.4% and a large NH3 yield rate of 15.1 μg h−1 mg−1cat. at −0.5 V vs. reversible hydrogen electrode. This catalyst also exhibits excellent selectivity and stability. Theoretical calculations suggest the reaction follows the associative enzymatic mechanism and it has a barrier of as low as 0.68 eV.

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KW - Electrocatalyst

KW - Faradaic efficiency

KW - Theoretical calculation

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