Now showing items 1-5 of 5
Transparent ionic conductors and fluorescent materials based on PEO/PPO – siloxane hybrid blends
(2017-09-21) [Tese de doutorado]
Neste trabalho de Tese uma metodologia sol-gel mais verde para a preparação de materiais híbridos orgânico-inorgânicos (OIH) a base de dois poli-éter amina terminal (Jeffamine®), o óxido de poli-etileno (PEO) e o óxido de ...
Studies of oxygen reduction activity and stability of carbon-supported PdNi and PdCu nanoparticles of different compositions
(2018-02-23) [Tese de doutorado]
The slow kinetics of the oxygen reduction reaction is the main cause of the severe performance losses of fuel cell cathode. Pt is the most active pure metal to catalyze this reaction. However, because of their limited ...
Surface structure and electronic properties of carbon supported PdAu nanoparticles and their catalytic behavior toward the oxygen reduction reaction
(2018-03-14) [Tese de doutorado]
Carbon supported PdAu nanoparticles with different Au contents (20-50% in atoms) were synthesized using a procedure carried out in a liquid two-phase system. As-prepared materials presented similar average particle diameter ...
Multifunctional platforms based on upconversion nanoparticles for applications in nanomedicine
(2018-03-20) [Tese de doutorado]
Na área biomédica, existe uma crescente demanda por nanossistemas multifuncionais para realização de imageamento e terapia simultaneamente, visando um diagnóstico precoce e máximo benefício terapêutico. Nanopartículas para ...
Magnetic molecularly imprinted polymers (MMIPs): synthesis and characterization for the spectrophotometric determination of caffeine
(2019-03-22) [Tese de doutorado]
Daily food items contain considerable amount of caffeine that is constantly released to the environment, causing major problems to living organisms that can shift the entire ecosystem resulting adverse public health and ...