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

• Main Authors: Gema Martinez, Ana Malumbres, Angela Lopez, Reyes Mallada, Jose L. Hueso, Jesus Santamaria
• Format: Article
• Language: English
• Published: Frontiers Media S.A. 2018-10-01
• Series: Frontiers in Chemistry
• Subjects: bimetallic alloy; nanoparticles; PtxCoy/C catalyst; laser pyrolysis; preferential CO oxidation
• Online Access: https://www.frontiersin.org/article/10.3389/fchem.2018.00487/full
• ISSN: 2296-2646

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.