Synthesis of Ordered Intermetallic PtBi2 Nanoparticles for Methanol-Tolerant Catalyst in Oxygen Electroreduction
Ordered intermetallic phase PtBi2 nanoparticles with an average particle size of 4.1±1.7 nm
were synthesized at ambient conditions in an aqueous solution by co-reducing H2PtCl6 and
Bi (NO3) 3 with NaBH4 in the presence of polyvinylpyrrolidone (PVP) as a capping agent.
The produced PtBi2 nanoparticle catalyst, which has some distinguishable properties from
Pt or Pt-based disordered catalysts, displays a strong electrocatalytic activity toward oxygen
reduction with a methanol-tolerant property. The methods, such as powder X-ray diffraction …
were synthesized at ambient conditions in an aqueous solution by co-reducing H2PtCl6 and
Bi (NO3) 3 with NaBH4 in the presence of polyvinylpyrrolidone (PVP) as a capping agent.
The produced PtBi2 nanoparticle catalyst, which has some distinguishable properties from
Pt or Pt-based disordered catalysts, displays a strong electrocatalytic activity toward oxygen
reduction with a methanol-tolerant property. The methods, such as powder X-ray diffraction …
Ordered intermetallic phase PtBi2 nanoparticles with an average particle size of 4.1 ± 1.7 nm were synthesized at ambient conditions in an aqueous solution by co-reducing H2PtCl6 and Bi(NO3)3 with NaBH4 in the presence of polyvinylpyrrolidone (PVP) as a capping agent. The produced PtBi2 nanoparticle catalyst, which has some distinguishable properties from Pt or Pt-based disordered catalysts, displays a strong electrocatalytic activity toward oxygen reduction with a methanol-tolerant property. The methods, such as powder X-ray diffraction (XRD), transmission electron micrograph (TEM), selected area electron diffraction (SAED), energy-dispersed X-ray spectroscopy (EDS), and cyclic voltammetry, were employed for catalyst structure and activity characterization.
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