Publicação
Engineering design and synthesis of multifunctional nanoparticles based on combinations of soft and metallic materials, and study of their optical, imaging, and biological applications
| Resumo: | Metallic nanoparticles have acquired increasing interest and significance in various scientific disciplines due to their unique physical, chemical, and optical properties. This thesis is focused on the development of new sustainable synthetic routes for nanoparticles with diverse potential applications such as catalysis and antibacterial activity. A comprehensive investigation of a new synthesis of branched gold nanoparticles, focusing their tunability and optical and structural characteristics is presented. Furthermore, the synthesis and characterization of mixed branched AuPd and AuPt bimetallic nanoparticles are presented, and the nanoparticles have been deeply characterized and their nanozyme catalytic properties were assessed. Additionally, the thesis investigates the fabrication of silver@mesoporous silica and gold@mesoporous silica nanostructures, highlighting the flexibility of the synthetic protocol and their potential application in as antibacterial agents has been studied. Moreover, the work explores the doping of a polyurethane polymer with silver@mesoporous silica nanoparticles, aiming to enhance the potential use of these nanomaterials in a bigger range of applications. Overall, the research presented in this thesis aims to contribute to the advancement of nanoscience by presenting new progresses into the design, synthesis, characterization, and application of nanomaterials with tailored properties. |
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| Autores principais: | Nuti, Silvia |
| Assunto: | Nanoparticles Gold Silver Platinum Palladium Bimetallic |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | tese de doutoramento |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | Metallic nanoparticles have acquired increasing interest and significance in various scientific disciplines due to their unique physical, chemical, and optical properties. This thesis is focused on the development of new sustainable synthetic routes for nanoparticles with diverse potential applications such as catalysis and antibacterial activity. A comprehensive investigation of a new synthesis of branched gold nanoparticles, focusing their tunability and optical and structural characteristics is presented. Furthermore, the synthesis and characterization of mixed branched AuPd and AuPt bimetallic nanoparticles are presented, and the nanoparticles have been deeply characterized and their nanozyme catalytic properties were assessed. Additionally, the thesis investigates the fabrication of silver@mesoporous silica and gold@mesoporous silica nanostructures, highlighting the flexibility of the synthetic protocol and their potential application in as antibacterial agents has been studied. Moreover, the work explores the doping of a polyurethane polymer with silver@mesoporous silica nanoparticles, aiming to enhance the potential use of these nanomaterials in a bigger range of applications. Overall, the research presented in this thesis aims to contribute to the advancement of nanoscience by presenting new progresses into the design, synthesis, characterization, and application of nanomaterials with tailored properties. |
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