A pyrolysis-phosphorization approach to fabricate carbon nanotubes with embedded CoP nanoparticles for ambient electrosynthesis of ammonia

No Thumbnail Available
File version
Author(s)
Zhang, S
Gong, W
Lv, Y
Wang, H
Han, M
Wang, G
Shi, T
Zhang, H
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2019
Size
File type(s)
Location
License
Abstract

We report a pyrolysis-phosphorization approach to fabricate carbon nanotubes with embedded CoP nanoparticles (CoP/CNs) using ZIF-67 as a precursor for electrocatalytic nitrogen (N2) reduction to ammonia (NH3) under ambient conditions. The results demonstrate that the as-synthesized CoP/CNs as electrocatalysts exhibit high electrocatalytic activity toward the N2 reduction reaction (NRR), affording a large NH3 yield rate of 48.9 μg h-1 mgcat.-1 with a faradaic efficiency (FE) of 8.7% at -0.4 V (vs. RHE) in 0.1 M Na2SO4 electrolyte. The 15N isotopic labelling experiments confirm that the NH3 obtained is indeed from the CoP/CN catalyzed NRR process. Our theoretical calculation results reveal that the N2 molecules prefer to be adsorbed on the highly unsaturated three coordinated Co sites of the CoP(112) plane following an associative distal hydrogenation process.

Journal Title

Chemical Communications

Conference Title
Book Title
Edition
Volume

55

Issue

82

Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Chemical sciences

Persistent link to this record
Citation

Zhang, S; Gong, W; Lv, Y; Wang, H; Han, M; Wang, G; Shi, T; Zhang, H, A pyrolysis-phosphorization approach to fabricate carbon nanotubes with embedded CoP nanoparticles for ambient electrosynthesis of ammonia, Chemical Communications, 2019, 55 (82), pp. 12376-12379

Collections