Journal
SMALL
Volume 16, Issue 32, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202001980
Keywords
carbon nanosheets; iron nitride; overall water splitting; phosphorus doping; Saccharomycetes cerevisiae
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Funding
- Taishan Scholars Project Special Funds [tsqn201812083]
- Natural Science Foundation of Shandong Province [ZR2019YQ20, 2019JMRH0410]
- Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program [2016TQ03N541]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2017B030306001]
- National Natural Science Foundation of China [51972147]
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It 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. cerevisiaereplace the hazardous CH4, NH3, and H3P. The diffusion pattern of N, P inS. cerevisiaeand contact form between metal andS. cerevisiaeobservably 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 electrolyzer assembled by P-Fe3N@NC NSs/IF as both anode and cathode electrodes needs only 1.61 V to reach 10 mA cm(-2)for overall water splitting with a superb stability. TheS. cerevisiae-based process presents a feasible approach for synthesis of nitrides, carbides, phosphides, and electrocatalytic applications.
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