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Nanomateriais semicondutores aplicados na fabricação de dispositivos eletroquímicos
(Universidade Federal de São Carlos, 2019-03-22)
This dissertation was subdivided into 3 different studies. In the first study, it was proposed the development of a photo-electrochemical system for the removal of caffeine in natural water samples. Photo-anodes made with ...
Investigação das propriedades ópticas e fotocatalíticas de materiais a base de fosfato de prata
(Universidade Federal de São Carlos, 2019-08-05)
The semiconductor-based photocatalytic degradation of synthetic dyes has been considered a promising approach in wastewater treatment. The main objective in this doctoral thesis was the investigation on structural, ...
Complexos de rutênio(II) com potenciais atividades antitumorais: síntese, caracterização e ensaios biológicos
(Universidade Federal de São Carlos, 2013-12-13)
In this thesis phosphinic ruthenium complexes coordinated to ligands of biological interest: folic acid, 6-mercaptopurine, 2-mercaptopyridine and 8-aminoquinoline, dpqQX, dppz and dpq (dipyridophenazine and derivatives) ...
Estudo químico do fungo Colletotrichum acutatum e sua interação com Citrus sinensis
(Universidade Federal de São Carlos, 2014-11-06)
Brazil remains the world's largest orange producer, accounting for 32% of the total production of oranges and 50% orange juice. The State of São Paulo holds 97% of Brazilian exports of orange juice, possessing one of the ...
Estratégias espectroanalíticas para análise química inorgânica de plantas medicinais
(Universidade Federal de São Carlos, 2014-12-01)
This thesis describes the development of analytical procedures based on direct solid analysis by high-resolution continuum source atomic absorption spectrometry in graphite furnace (SS-HR-CS GF AAS) and aqueous solutions ...
Estudo de alterações metabólicas nos fungos endofíticos Penicillium brasilianum e Penicillium griseoroseum
(Universidade Federal de São Carlos, 2011-08-26)
Microorganisms, known as being relatively simple, have shown a great adaptation power to different nutritional situations by changing their metabolism with lack or supply of nutrients in the culture medium. This feature ...
Desenvolvimento de nanocompósitos baseados em hidrogéis aplicados à liberação de nutrientes agrícolas
(Universidade Federal de São Carlos, 2014-03-21)
Nanocomposites were developed based on polyacrylamide hydrogels (PAAm) and methylcellulose (MC) reinforced with montmorillonite (MMT), undergoing the materials to subsequent hydrolysis process and evaluating their loading ...
Preparação, caracterização e aplicação de eletrodos de nanotubos de carbono na determinação de Cr(III), Cr(VI) e flavonoides
(Universidade Federal de São Carlos, 2013-01-30)
The objective of this work is the development of a carbon nanotubes past electrode (CNTs) as electrochemical sensors in the analysis of flavonoids, (+) catechin and rutin, and Cr (III) and Cr (VI) ions, by differential ...
Estudo teórico computacional dos sistemas micelares de alquilbenzenos em diiodometano
(Universidade Federal de São Carlos, 2014-02-28)
The surfactant-like behavior of the alkylbenzenes in diiodomethane is experimentally verified, being observed, in addition to the characteristic effects on the surface tension, evidences of clusters formation. The main ...
Uso de imagens digitais e ferramentas quimiométricas para identificação e determinação de Cr (VI) em solos contaminados
(Universidade Federal de São Carlos, 2012-03-23)
The determination of toxic metals in soils is an important factor to access their quality or identify possible contamination. The element Cr has double feature: Cr (III) is essential for human beings and Cr (VI) is toxic. ...