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Photoelectrodes with titanate nanotubes sensitized by mesoporphyrin derivative ...

Souza, Antonio Paulo Santos; Almeida, Ana Fabíola Leite; Conegero, Leila de Souza; Viana, Bartolomeu Cruz; Ferreira, Odair Pastor

Titanate nanotubes (TiNTs) with the chemical composition Na2Ti3O7.nH2O (NaTiNT) were obtained through a hydrothermal method in highly alkaline medium. Protonated titanates nanotubes (H-TiNTs), with the composition H2Ti3O7.nH2O, were prepared by ion exchange reaction through a suspension of Na2Ti3O7nH2O nanotubes in HCl medium, promoting the exchange of Na+ ions by H+. Both Na2Ti3O7.nH2O and H2Ti3O7.nH2O produc...

Date: 2021   |   Origin: Oasisbr
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Estudos visando a sintese de alcaloides pirrolizidinicos e indolizidinicos : ap...

Conegero, Leila de Souza

Orientador: Ronaldo Aloise Pilli; Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica; Resumo: O trabalho desenvolvido visou a obtenção de alcalóides pirrolizidínicos e indolizidínicos utilizando a (+)-retronecina (1) e o ácido D-isoascórbico (35D) como matérias primas, respectivamente. A retronecina (1) foi isolada da espécie vegetal Senecio brasiliensis. Para a preparação da base necíni...

Date: 2006   |   Origin: Oasisbr
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