Porous Carbon Membrane-Supported Atomically Dispersed Pyrrole-Type FeN4 as Active Sites for Electrochemical Hydrazine Oxidation Reaction.
Yu-Cheng WangLi-Yang WanPei-Xin CuiLei TongYu-Qi KeTian ShengMiao ZhangShu-Hui SunHai-Wei LiangYue-Sheng WangKarim ZaghibHong WangZhi-You ZhouJiayin YuanPublished in: Small (Weinheim an der Bergstrasse, Germany) (2020)
The rational design of catalytically active sites in porous materials is essential in electrocatalysis. Herein, atomically dispersed Fe-Nx sites supported by hierarchically porous carbon membranes are designed to electrocatalyze the hydrazine oxidation reaction (HzOR), one of the key techniques in electrochemical nitrogen transformation. The high intrinsic catalytic activity of the Fe-Nx single-atom catalyst together with the uniquely mixed micro-/macroporous membrane support positions such an electrode among the best-known heteroatom-based carbon anodes for hydrazine fuel cells. Combined with advanced characterization techniques, electrochemical probe experiments, and density functional theory calculation, the pyrrole-type FeN4 structure is identified as the real catalytic site in HzOR.
Keyphrases
- metal organic framework
- electron transfer
- density functional theory
- visible light
- gold nanoparticles
- ionic liquid
- fluorescent probe
- molecular dynamics
- molecularly imprinted
- living cells
- label free
- induced apoptosis
- highly efficient
- hydrogen peroxide
- aqueous solution
- cell cycle arrest
- reduced graphene oxide
- oxidative stress
- cell death
- mass spectrometry
- pi k akt
- simultaneous determination
- cell proliferation
- carbon nanotubes
- solid state
- high resolution
- single molecule