Electrospun zirconia nanofibers for enhancing the electrochemical synthesis of ammonia by artificial nitrogen fixation

Jiaojiao XIA; Haoran GUO; Maozeng CHENG; Chuyan CHEN; Minkang WANG; Yong XIANG; Tingshuai LI; Enrico TRAVERSA

doi:10.1039/d0ta08089f

Electrospun zirconia nanofibers for enhancing the electrochemical synthesis of ammonia by artificial nitrogen fixation

Jiaojiao XIA, Haoran GUO, Maozeng CHENG, Chuyan CHEN, Minkang WANG, Yong XIANG, Tingshuai LI^*, Enrico TRAVERSA

^*Corresponding author for this work

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

44 Citations (Scopus)

Abstract

The electrocatalytic nitrogen reduction reaction (NRR) has been deemed a promising and reliable approach to massively produce ammonia under ambient conditions. A high-efficiency electrocatalyst with an excellent selectivity is highly required to reduce the multiple reaction barriers of N₂+ 3H₂O → 2NH₃+ 1.5O₂. Here, we report electrospun zirconia nanofibers as a non-noble NRR electrocatalyst to convert nitrogen to ammonia. Theoretical calculations predict that the Zr sites with oxygen vacancies are favorable for nitrogen adsorption and reduction. Experimentally, the larger concentration of oxygen defects in such an electrocatalyst allowed achieving a NH₃formation rate of 9.63 μg h⁻¹mg_cat.⁻¹and an optimal faradaic efficiency of 12.1% at −0.7 Vvs.the reversible hydrogen electrode in 0.1

Original language	English
Pages (from-to)	2145-2151
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	9
Issue number	4
Early online date	16 Nov 2020
DOIs	https://doi.org/10.1039/d0ta08089f
Publication status	Published - 2 Feb 2021
Externally published	Yes

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Publisher Copyright:
© The Royal Society of Chemistry 2020.

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abstract = "The electrocatalytic nitrogen reduction reaction (NRR) has been deemed a promising and reliable approach to massively produce ammonia under ambient conditions. A high-efficiency electrocatalyst with an excellent selectivity is highly required to reduce the multiple reaction barriers of N2+ 3H2O → 2NH3+ 1.5O2. Here, we report electrospun zirconia nanofibers as a non-noble NRR electrocatalyst to convert nitrogen to ammonia. Theoretical calculations predict that the Zr sites with oxygen vacancies are favorable for nitrogen adsorption and reduction. Experimentally, the larger concentration of oxygen defects in such an electrocatalyst allowed achieving a NH3formation rate of 9.63 μg h−1mgcat.−1and an optimal faradaic efficiency of 12.1% at −0.7 Vvs.the reversible hydrogen electrode in 0.1",

author = "Jiaojiao XIA and Haoran GUO and Maozeng CHENG and Chuyan CHEN and Minkang WANG and Yong XIANG and Tingshuai LI and Enrico TRAVERSA",

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AU - XIA, Jiaojiao

AU - GUO, Haoran

AU - CHENG, Maozeng

AU - CHEN, Chuyan

AU - WANG, Minkang

AU - XIANG, Yong

AU - LI, Tingshuai

AU - TRAVERSA, Enrico

PY - 2021/2/2

Y1 - 2021/2/2

N2 - The electrocatalytic nitrogen reduction reaction (NRR) has been deemed a promising and reliable approach to massively produce ammonia under ambient conditions. A high-efficiency electrocatalyst with an excellent selectivity is highly required to reduce the multiple reaction barriers of N2+ 3H2O → 2NH3+ 1.5O2. Here, we report electrospun zirconia nanofibers as a non-noble NRR electrocatalyst to convert nitrogen to ammonia. Theoretical calculations predict that the Zr sites with oxygen vacancies are favorable for nitrogen adsorption and reduction. Experimentally, the larger concentration of oxygen defects in such an electrocatalyst allowed achieving a NH3formation rate of 9.63 μg h−1mgcat.−1and an optimal faradaic efficiency of 12.1% at −0.7 Vvs.the reversible hydrogen electrode in 0.1

AB - The electrocatalytic nitrogen reduction reaction (NRR) has been deemed a promising and reliable approach to massively produce ammonia under ambient conditions. A high-efficiency electrocatalyst with an excellent selectivity is highly required to reduce the multiple reaction barriers of N2+ 3H2O → 2NH3+ 1.5O2. Here, we report electrospun zirconia nanofibers as a non-noble NRR electrocatalyst to convert nitrogen to ammonia. Theoretical calculations predict that the Zr sites with oxygen vacancies are favorable for nitrogen adsorption and reduction. Experimentally, the larger concentration of oxygen defects in such an electrocatalyst allowed achieving a NH3formation rate of 9.63 μg h−1mgcat.−1and an optimal faradaic efficiency of 12.1% at −0.7 Vvs.the reversible hydrogen electrode in 0.1

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JO - Journal of Materials Chemistry A

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Electrospun zirconia nanofibers for enhancing the electrochemical synthesis of ammonia by artificial nitrogen fixation

Abstract

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