Browsing Exact and Earth Sciences by Author "Arenas, Leliz Ticona"
Now showing items 1-4 of 4
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High performance biocatalyst based on β-D-galactosidase immobilized on mesoporous silica/titania/chitosan material
Ricardi, Natália Carminatti; Arenas, Leliz Ticona; Benvenutti, Edilson Valmir; Hinrichs, Ruth; Flores, Elí Emanuel Esparza; Hertz, Plinho Francisco; Costa, Tania Maria Haas (2021) [Journal article]A new support for the immobilization of β-D-galactosidase from Kluyveromyces lactis was developed, consisting of mesoporous silica/titania with a chitosan coating. This support presents a high available surface area and ... -
Synthesis of silica xerogels with high surface area using acetic acid as catalyst
Arenas, Leliz Ticona; Simm, Carolina Wildner; Gushikem, Yoshitaka; Dias, Silvio Luis Pereira; Moro, Celso Camilo; Costa, Tania Maria Haas; Benvenutti, Edilson Valmir (2007) [Journal article]Nesse trabalho foi estudada a influência do ácido acético na estrutura de poros e na área superficial de sílicas preparadas pelo método sol-gel. Condições experimentais de síntese, tais como temperatura de policondensação ... -
Tuning anatase-rutile phase transition temperature : TiO2/SiO2 nanoparticles applied in dye-sensitized solar cells
Cardoso, Billy Nunes; Kohlrausch, Emerson Cristofer; Laranjo, Marina Teixeira; Benvenutti, Edilson Valmir; Balzaretti, Naira Maria; Arenas, Leliz Ticona; Santos, Marcos José Leite; Costa, Tania Maria Haas (2019) [Journal article]TiO2/SiO2 nanoparticles with 3, 5, and 10 molar percent of silica, were synthesized by hydrothermal method and characterized by SEM, TEM, N2 adsorption-desorption isotherms, X-ray diffraction, and Raman and UV-Vis spectroscopy. ... -
A water soluble 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride silsesquioxane grafted onto Al/SiO2 surface : chromium adsorption study
Arenas, Leliz Ticona; Simon, Nathália Marcolin; Gushikem, Yoshitaka; Costa, Tania Maria Haas; Lima, Éder Cláudio; Benvenutti, Edilson Valmir (2006) [Journal article]O material octanocloreto de 3-n-propil-1-azonia-4-azabiciclo[2.2.2] silsesquioxano (dabcosil silsesquioxano) solúvel em água foi obtido. O dabcosil silsesquioxano foi enxertado na superfície da sílica, previamente modificada ...