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Propriedades eletrocatalíticas de eletrodos nanoestruturados constituídos por multicamadas metálicas
(Universidade Federal de São Carlos, 2010-11-08)
This work reports the electrochemical and spectroscopic studies of ethylene glycol and ethanol electrooxidation onto Ptpc/(Pt1Ir1)x/Pty, Ptpc/Irx/Pty (where x and y designate different thickness) and alloys Ptpc/(PtxIry)1.5ML ...
Preparação e caracterização das propriedades luminescentes de blendas de poli(3-ácidotiofenoacético) com acetato de celulose ou poli(vinil álcool)
(Universidade Federal de São Carlos, 2010-11-19)
We have studied the optical properties of Poly(3-Thiopheneacetic Acid) (PTAA) by absorption, emission, and infrared measurements. We have observed, on the contrary of what broadly reported in the literature, that the ...
Nanopartículas coloidais de ouro e prata e sua funcionalização com dibutil-dicalcogenetos
(Universidade Federal de São Carlos, 2010-02-25)
Hybrid materials present interesting combination of the physical and chemical properties of organic and inorganic compounds in a single material that is widely employed in distinct technological applications. In the present ...
Fotoluminescência de nanopartículas de Ni(OH)2 e avaliação catalítica de NiO na redução de NO com CO
(Universidade Federal de São Carlos, 2010-08-10)
In recent years, nanostructured oxides have attracted great interest from different areas of technology due to the possibility of developing new devices or electro-optical equipment. In principle, the physical and chemical ...
Nanocristais de TiO2 : relação entre parâmetros morfológicos, estruturais e fotocatálise
(Universidade Federal de São Carlos, 2010-02-26)
In this work, morphologically different TiO2 nanocrystals were synthesized through the OPM method with the objective of performing a comparative study related to photoactivity. Morphological characterization was performed ...
Perfil dos cursos de formação de professores dos programas de licenciatura em química das instituições públicas de ensino superior da região nordeste do Brasil
(Universidade Federal de São Carlos, 2010-05-28)
This study aimed to determine the profile of Chemistry´s courses of Public Institutions of higher education in Brazilian Northeastern, referencing the current educational paradigms and also the legal guidelines regarding ...
Titanatos de alcalinos terrosos : a ordem associada à desordem
(Universidade Federal de São Carlos, 2010-02-26)
The microwave-assisted hydrothermal method was implemented in the synthesis of alkaline earth titanates under ABO3 stoichiometric known as perovskites, being efficient and innovative. For that, OH- groups played an important ...
Avaliação e caracterização da borracha natural de diferentes clones de seringueira cultivados nos estados de Mato Grosso e Bahia
(Universidade Federal de São Carlos, 2010-03-02)
Natural rubber (NR) is a basic raw material used in the manufacture of a wide range of rubber goods. Usually both quality and productivity levels of Brazilian NR are lower than the imported NR. This is due to a lack of ...
Eletrossíntese de nanoestruturas de polianilina
(Universidade Federal de São Carlos, 2010-01-18)
The potentiodynamic and potentiostatic electrochemical synthesis were performed for the eletrosynthesis of nanofibers and nanoparticles of polyaniline on gold electrodes without the use of physical or chemical templates. ...
Especiação de metais e sua interação com a matéria orgânica dissolvida em um reservatório artificial
(Universidade Federal de São Carlos, 2010-05-28)
Environmental degradation of aquatic ecosystems stimulates investigations about the interactions between dissolved organic matter, trace metals and the biota. This study aimed to investigate the speciation of cadmium, ...