Modeling Core-Shell Nanocatalysts Preparation using Water in Oil Microemulsions | Chapter 9 | Research Aspects in Chemical and Materials Sciences Vol. 1

 The capacity to alter the structure at the nanoscale is required for the creation of a new generation of catalysts with excellent catalytic performance. Controlling the metal distribution in bimetallic nanocatalysts, in particular, is crucial to increasing their catalytic activity. The long-term goal of this research is to apply the knowledge gained in the synthesis of bimetallic nanoparticles in microemulsions. Only by analysing the parameters impacting metal sequence can such a difficult goal be attained. We created a computer simulation model for the one-step production of bimetallic nanoparticles in microemulsions to achieve this goal. Under various experimental settings, the model predicts the metal distribution in bimetallic nanocatalysts. From a mechanistic standpoint, Au/Pt and Au/Ag nanostructures are investigated and addressed. The findings may be applied to other bimetallic combinations with comparable standard reduction potential discrepancies. It was demonstrated that adjusting the initial reactant concentration inside micelles may readily change both surface and interior compositions at nanoscale precision. The confinement of reactants inside micelles has a significant impact on the reaction rates of metal precursors, according to a kinetic investigation. As a result of the greater concentration, the final nanocatalyst has a more mixed core and a more defined exterior.

Author(s) Details:

Concha Tojo,
Physical Chemistry Department, Universidade de Vigo, E-36310, Vigo, Spain.

David Buceta,
Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782, Santiago de Compostela, Spain.

M. Arturo López-Quintela,
Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782, Santiago de Compostela, Spain.

Please see the link here: https://stm.bookpi.org/RACMS-V1/article/view/7106