A Biomass-Derived Carbon-Based Electrocatalyst for Efficient N2 Fixation to NH3 under Ambient Conditions.
Hong HuangLi XiaRongRong CaoZhiguo NiuHongyu ChenQian LiuTingshuai LiXifeng ShiAbdullah M AsiriXuping SunPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2019)
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.
Keyphrases
- room temperature
- air pollution
- particulate matter
- metal organic framework
- perovskite solar cells
- ionic liquid
- wastewater treatment
- emergency department
- quantum dots
- minimally invasive
- squamous cell carcinoma
- gold nanoparticles
- anaerobic digestion
- mass spectrometry
- risk assessment
- adverse drug
- visible light
- reduced graphene oxide
- carbon nanotubes
- molecularly imprinted