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Laser-Assisted Production of Carbon-Encapsulated Pt-Co Alloy Nanoparticles for Preferential Oxidation of Carbon Monoxide.

Frontiers in chemistry (2018-11-06)
Gema Martinez, Ana Malumbres, Angela Lopez, Reyes Mallada, Jose L Hueso, Jesus Santamaria
ABSTRACT

C-encapsulated highly pure PtxCoy alloy nanoparticles have been synthesized by an innovative one-step in-situ laser pyrolysis. The obtained X-ray diffraction pattern and transmission electron microscopy images correspond to PtxCoy alloy nanoparticles with average diameters of 2.4 nm and well-established crystalline structure. The synthesized PtxCoy/C catalyst containing 1.5 wt% of PtxCoy nanoparticles can achieve complete CO conversion in the temperature range 125-175°C working at weight hourly space velocities (WHSV) of 30 L h-1g-1. This study shows the first example of bimetallic nanoalloys synthesized by laser pyrolysis and paves the way for a wide variety of potential applications and metal combinations.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Platinum(II) acetylacetonate, 97%
Sigma-Aldrich
Cobalt(III) acetylacetonate, 99.99% trace metals basis