Synthesis and characterization of high entropy alloy nanoparticles as electrocatalysts for the carbon dioxide reduction reaction

Author

Pérez Blanes, Helena

Abstract

One of the biggest concerns that society must face nowadays is the excessive emission of carbon dioxide (CO2) into the atmosphere. The need to synthesize stable and selective cata-lysts from abundant and low-cost materials for the reduction of CO2 into fossil fuels, such as methane or ethane, has grown. In this regard, nanoparticles based on high entropy alloys (HEA-NPs) are emerging as new materials with outstanding properties.
In this work, different types of Al8Cr17Co17Cu8Fe17Ni33 HEA-NPs have been synthesized by pulsed-laser assisted method investigating the solvent and stabilizer effect on the electrocat-alytic behavior of HEA-NPs. Moreover, transmission electron microscopy (TEM) measure-ments combined with energy dispersive X-ray (EDX) mapping have been used to characterize the structure and composition of the laser-generated HEA-NPs. The electrocatalytic perfor-mance for the CO2 reduction (activity and stability) of the laser-generated HEA-NPs has been characterized by the linear sweep voltammetry (LSV) and chronoamperometry (CA) using the rotating disc electrode (RDE).

Director

Colominas Fuster, Sergi
Witt, Julia

Degree

IQS SE - Undergraduate Program in Chemical Engineering

Date

2022-06-20