Kinetics and Surface Composition of Au/Pt Nanoparticles Synthesized in Microemulsion Template Using a Prediction Model | Chapter 8 | Advances and Challenges in Science and Technology Vol. 3

 The objective concerning this study is producing custom-made Au/Pt nanoparticles. The presence of Au on the surface of Au/Pt nanocatalysts has existed shown to increase the Pt catalytic activity. That is why the strength to exert control over surface arrangement is key to improve impetuses efficiency of bimetallic nanoparticles. A computer imitation study was carried out in consideration of comprehend how the developing surface can be reduced by the simple method of varying Au:Pt percentage. We present an in-depth energetic simulation study on the influence of Au:Pt ratio on the establishment of Au/Pt nanoparticles synthetized in microemulsions. The resulting nanostructures and surface arrangements are explained as a function of kinetic limits such as Au:Pt percentage, concentration and intermicellar rate of exchange. It should be stressed that the compartmentalization of the backlash medium play a fundamental role in the combination because micelles act as drug pump of the faster forerunner metal (Au). It allows us to interpret that a higher Au forerunner amount in feeding resolution results in a Au reduction which takes place over a more protracted period of time. As a result, Au is located until longer stages of the combining, so that Au is present at nanoparticle surface. Micelles as response media produces a minor affect Pt due to its more gradual reduction. By regulating the Au:Pt ratio, it is possible to build surfaces with distinguishing compositions based on the apparent kinetic acts of Au and Pt. The conclusions on the scope of atomic mixing under different Au:Pt ratios are further by means of numerical results on surface composition, that correctly mirror exploratory data.

Author(s) Details:

Jorge Perez-Alvarez,
Physical Chemistry Department, University of Vigo, E-36310, Vigo, Spain.

Concha Tojo,
Physical Chemistry Department, University of 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 Lopez-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/ACST-V3/article/view/12020