AUTHOR=Martinez Gema , Malumbres Ana , Lopez Angela , Mallada Reyes , Hueso Jose L. , Santamaria Jesus 

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

JOURNAL=Frontiers in Chemistry

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00487

DOI=10.3389/fchem.2018.00487

ISSN=2296-2646

ABSTRACT=<p>C-encapsulated highly pure Pt<sub>x</sub>Co<sub>y</sub> alloy nanoparticles have been synthesized by an innovative one-step <italic>in-situ</italic> laser pyrolysis. The obtained X-ray diffraction pattern and transmission electron microscopy images correspond to Pt<sub>x</sub>Co<sub>y</sub> alloy nanoparticles with average diameters of 2.4 nm and well-established crystalline structure. The synthesized Pt<sub>x</sub>Co<sub>y</sub>/C catalyst containing 1.5 wt% of Pt<sub>x</sub>Co<sub>y</sub> nanoparticles can achieve complete CO conversion in the temperature range 125–175°C working at weight hourly space velocities (WHSV) of 30 L h<sup>−1</sup>g<sup>−1</sup>. 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.</p>