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Estudo computacional das interações entre nanopartículas de dióxido de titânio envolvidas no processo de coalescência orientada
(Universidade Federal de São Carlos, 2018-04-03)
Experimental and theoretical studies have shown that the aggregation of TiO2 anatase nanoparticles (NPs) occurs with preferential crystallographic orientation by the so-called oriented attachment mechanism (OA). The growth ...
Hidróxidos duplos lamelares como matrizes para interação com fósforo: avaliação físico-química e aplicações
(Universidade Federal de São Carlos, 2018-02-27)
LAYERED DOUBLE HYDROXIDE AS MATRICES FOR PHOSPHATE
INTERACTION: PHYSICO-CHEMICAL ASSESSMENT AND APPLICATIONS:
Phosphorus is an essential element for all living organisms and is indispensable for diverse
economical ...
Mecanismos eletroquímicos nos processos de descarga do sistema PbO2/H2SO4
(Universidade Federal de São Carlos, 2017-11-17)
The goal of this work was to seek a mechanistic and morphological understanding of the discharge process of lead-acid batteries’ positive plates, which exhibits a complex porous structure. Due to this fact, nonporous ...
Morfologia e propriedades estruturais de óxidos metálicos complexos: um enfoque teórico e experimental
(Universidade Federal de São Carlos, 2018-07-18)
Design, control and direct characterization of the properties of the surfaces are prerequisites for all practical applications of (nano) materials. Within this context, the present doctoral thesis is an experimental and ...
Estudo da eletro-oxidação de moléculas orgânicas pequenas sobre multicamadas metálicas Ptpc/Rh/Pt e Ptpc/Ru/Pt utilizando FTIR in situ
(Universidade Federal de São Carlos, 2018-09-06)
The modification of platinum-based electrodes for the efficiency optimization of the fuel cells has generated a great scientific interest, due to the problems associated with the poisoning of the catalytic surface. In ...
Estudo da corrosão atmosférica do aço AISI 1020 usando a técnica de ruído eletroquímico e microscopia óptica
(Universidade Federal de São Carlos, 2019-12-13)
The objective of this work was to study the corrosion of AISI 1020 exposed in an atmosphere containing acetic acid (HAc) vapor. Electrochemical noise (RE) oscillations and surface micrographs of the samples were obtained ...
Estudo do crescimento de nanocristais de TiO2
(Universidade Federal de São Carlos, 2020-05-29)
STUDY GROWTH OF TiO2 NANOCRYSTALS
In the last three decades, the development of nanotechnology has become a reality in many areas of industry and science, already reaching applications in society in sectors such as: health, ...
Otimização do processo de mineralização de compostos orgânicos utilizando sistemas eletro-Fenton e fotoeletro Fenton por irradiação UV artificial e solar
(Universidade Federal de São Carlos, 2011-09-30)
Electrochemical advanced oxidation processes based on the Fenton s reaction, such as electro-Fenton (EF) and photoelectro-Fenton (PEF) using artificial and solar UV irradiation were employed in the treatment of effluents ...
Ternary nanocomposites based on cellulose nanocrystals, conductive materials and electrospun fibers applied in sensors for detection of heavy metals in water
(Universidade Federal de São Carlos, 2019-03-28)
The monitoring of water resources destined for consumption is a subject of outmost importance for population and ecosystems life quality maintenance. The degradation of these resources with heavy metals, usually associated ...
Nanoemulsões de óleos essenciais: mecanismos de estabilidade e interação com pectina em bionanocompósitos para aplicação em embalagens ativas
(Universidade Federal de São Carlos, 2019-03-22)
Microbial growth is among the challenges impairing food preservation and shelf-life. Essential oils (EO) featuring antimicrobial and antioxidant activities denote an alternative for lessening the contents of synthetic ...