Phosphorus ‐Doped Iron Nitride Nanoparticles Encapsulated by Nitrogen‐Doped Carbon Nanosheets on Iron Foam In Situ Derived from Saccharomycetes Cerevisiae for Electrocatalytic Overall Water Splitting

Saccharomycetes cerevisiae is used as a nitrogen source to safely produce metal nitride instead of the high ‐cost and hazardous NH3. Elemental diffusion pattern and contact form forS. cerevisiae affect the composition and phase of products. The obtained P ‐Fe3N@NC NSs/IF with Fe sites as the active center and P ‐doping regulating H‐binding strength exhibits excellent electrocatalytic performance for overall water splitting. AbstractIt is vitally essential to propose a novel, economical, and safe preparation method to design highly efficient electrocatalysts. Herein, phosphorus ‐doped iron nitride nanoparticles encapsulated by nitrogen‐doped carbon nanosheets are grown directly on the iron foam substrate (P‐Fe3N@NC NSs/IF) by in situ deriving fromSaccharomycetes cerevisiae (S. cerevisiae), where anion elements of C, N, and P all fromS. cerevisiae replace the hazardous CH4, NH3, and H3P. The diffusion pattern of N, P inS. cerevisiae and contact form between metal andS. cerevisiae observably affect the composition and phase of the product during high ‐temperature calcination. The obtained P‐Fe3N@NC NSs/IF demonstrates superior electrocatalytic performance for the hydrogen evolution reaction and oxygen evolution reaction, also satisfying durability. Theoretical calculation confirms that Fe sites of P ‐Fe3N serve as the active center, and N sites and P doping regulate the hydrogen binding strength to enhance catalytic ability. Additionally, the two ‐electrode...
Source: Small - Category: Nanotechnology Authors: Tags: Full Paper Source Type: research