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Now showing items 11-20 of 61
Contra eletrodos de sulfetos metálicos aplicados a células solares sensibilizadas por pontos quânticos
(Universidade Federal de São Carlos, 2019-05-22)
The quantum dot-sensitized solar cells (CSSPQ) are considered as third generation solar cell, derived from dye-sensitized solar cells (CSSC). Several works in the literature shown that the optimization of counter electrodes ...
Avaliação de novas arquiteturas de carbono para o desenvolvimento de sensores eletroquímicos para a determinação de espécies de interesse em diferentes matrizes de amostras
(Universidade Federal de São Carlos, 2019-03-01)
In this doctorate work the efforts were expended in the electrochemical study and electroanalytical application of electrochemical sensors based on two carbonaceous structures: diamond-like carbon (DLC) and carbon black ...
Combinação de reações organocatalíticas e multicomponentes para a síntese de sistemas heterocíclicos e moleculas híbridas
(Universidade Federal de São Carlos, 2019-02-08)
Small enantiomerically pure or enriched organic molecules are key starting materials
in organic synthesis. Chiral building blocks are in high demand in the overall
synthesis of complex natural products and in the discovery ...
Síntese de furanos trissubstituídos via reações de oxopaladação aeróbica
(Universidade Federal de São Carlos, 2019-02-25)
Furans are important heterocyclics with broad application in synthesis as a building block, frequently presented in a wide range of compounds that exhibit biological activity, including natural products. Intramolecular ...
Efeito da promoção de turbulência na hidrodinâmica de um reator tipo filtro-prensa e na degradação eletroquímica do bisfenol S
(Universidade Federal de São Carlos, 2019-06-28)
The kinetics of many electrochemical processes is limited by mass transport, especially at low concentrations of the reactant. The use of turbulence promoters in parallel-plate reactors increases the hydrodynamic turbulence ...
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, ...
Produção e caracterizações de superfícies antimicrobianas e bioativas sobre titânio
(Universidade Federal de São Carlos, 2019-07-19)
Titanium (Ti), being biocompatible and presenting chemical stability and good mechanical properties, is the most used material for manufacturing dental implants. However, implants present a high number of failures mainly ...
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 ...
Complexos de cobre (II) de bases de Schiff prolínicas aplicados como inibidores e miméticos funcionais da enzima Urease e à formação de 1,2,3-triazóis 1,4-dissubstituídos
(Universidade Federal de São Carlos, 2019-03-18)
In this work five Schiff base-type ligands derived from a series of reaction steps were
synthesized starting from the amino acid L-proline, in which four of them are novel
and were completely characterized by 1H, 13C, ...