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oapen-20.500.12657-492982021-11-23T14:03:09Z Chapter Microemulsions as Nanoreactors to Obtain Bimetallic Nanoparticles Tojo, C. Buceta, David Arturo López-Quintela, M. bimetallic nanoparticles, microemulsions, reduction rate, intermicellar exchange rate, nanocatalysts bic Book Industry Communication::P Mathematics & science::PN Chemistry Microemulsions are frequently used as nanoreactors for the synthesis of bimetallic nanoparticles. The ability to manipulate the metal distribution in bimetallic nanoparticles is essential for optimizing applications, and it requires a deeper understanding of how compartmentalization of reaction medium affects nanoparticle synthesis. A simulation model was developed to predict the atomic structure of bimetallic nanoparticles prepared via microemulsion in terms of metals employed and microemulsion composition. The model was successfully proved by comparing theoretical and experimental Au/Pt STEM profiles. On this basis, the model becomes a strong tool to further enhance our knowledge of the complex mechanisms governing reactions in microemulsions and its impact on final nanostructures. The purpose of this study is to perform a comprehensive kinetic analysis of coreduction of different couple of metals in the light of the interplay between three kinetic parameters: intermicellar exchange rate, chemical reduction rates of the two metals, and reactants concentration. The particular combination of these factors determines the reaction rate of each metal, which in turn determines the final metal arrangement. 2021-06-02T10:11:39Z 2021-06-02T10:11:39Z 2019 chapter ONIX_20210602_10.5772/intechopen.80549_412 https://library.oapen.org/handle/20.500.12657/49298 eng application/pdf n/a 63269.pdf InTechOpen 10.5772/intechopen.80549 10.5772/intechopen.80549 09f6769d-48ed-467d-b150-4cf2680656a1 H2020-NMP-PILOTS-2014 646155 open access
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Microemulsions are frequently used as nanoreactors for the synthesis of bimetallic nanoparticles. The ability to manipulate the metal distribution in bimetallic nanoparticles is essential for optimizing applications, and it requires a deeper understanding of how compartmentalization of reaction medium affects nanoparticle synthesis. A simulation model was developed to predict the atomic structure of bimetallic nanoparticles prepared via microemulsion in terms of metals employed and microemulsion composition. The model was successfully proved by comparing theoretical and experimental Au/Pt STEM profiles. On this basis, the model becomes a strong tool to further enhance our knowledge of the complex mechanisms governing reactions in microemulsions and its impact on final nanostructures. The purpose of this study is to perform a comprehensive kinetic analysis of coreduction of different couple of metals in the light of the interplay between three kinetic parameters: intermicellar exchange rate, chemical reduction rates of the two metals, and reactants concentration. The particular combination of these factors determines the reaction rate of each metal, which in turn determines the final metal arrangement.
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