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 PublicationsJournal Article (refereed)peer-review

16 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−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.

Original languageEnglish
Pages (from-to)14331-14337
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number27
Early online date18 Feb 2021
DOIs
Publication statusPublished - 19 Apr 2021
Externally publishedYes

Bibliographical note

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

Keywords

  • Artificial nitrogen fixation
  • Electrocatalyst
  • Faradaic efficiency
  • Theoretical calculation

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