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A Biomass‐Derived Carbon‐Based Electrocatalyst for Efficient N 2 Fixation to NH 3 under Ambient Conditions

Authors :
Hongyu Chen
Rongrong Cao
Hong Huang
Qian Liu
Li Xia
Xifeng Shi
Abdullah M. Asiri
Zhiguo Niu
Tingshuai Li
Xuping Sun
Source :
Chemistry – A European Journal. 25:1914-1917
Publication Year :
2019
Publisher :
Wiley, 2019.

Abstract

Currently, NH3 production primarily depends on the Haber-Bosch process, which operates at elevated temperatures and pressures and leads to serious CO2 emissions. Electrocatalytic N2 reduction offers an environmentally benign approach for the sustainable synthesis of NH3 under ambient conditions. This work reports the development of biomass-derived amorphous oxygen-doped carbon nanosheet (O-CN) using tannin as the precursor. As a metal-free electrocatalyst for N2 -to-NH3 conversion, such O-CN shows high catalytic performances, achieving a large NH3 yield of 20.15 μg h-1 mg-1 cat. and a high Faradic efficiency of 4.97 % at -0.6 V vs. reversible hydrogen electrode (RHE) in 0.1 m HCl at ambient conditions. Remarkably, it also exhibits high electrochemical selectivity and durability.

Details

ISSN :
15213765 and 09476539
Volume :
25
Database :
OpenAIRE
Journal :
Chemistry – A European Journal
Accession number :
edsair.doi...........c58158461681fbc38040caef6ed5d154