Buscar
Mostrando ítems 1-10 de 495
On the origin of the high capacitance of nitrogen-containing carbon nanotubes in acidic and alkaline electrolytes
(Royal Society of Chemistry, 2014-07)
The synthesis of nitrogenated carbon nanotubes (N-CNTs) with up to 6.1 wt% N, via the use of pyridine as the nitrogen containing carbon precursor, can provide a facile route to significantly enhance the low intrinsic ...
Square wave voltammetry of nitrofurans in aqueous media using a carbon fiber microelectrode
(Springer, 2018)
The nitrofuran compounds exhibit a wide spectrum of biological action, and the understanding of their reduction mechanism can contribute to a better comprehension of their biological action. In this sense, the electrochemical ...
Comparative study of polypyrrole films electrosynthesized in alkaline and acid solutions
(Elsevier Science Sa, 2009-09)
The influence of the pH of electropolymerization solutions on the properties of polypyrrole films has been studied using potentiodynamic techniques and faradaic impedance spectroscopy. Scanning electron microscopy (SEM), ...
Cerium(IV) oxide: Synthesis in alkaline and acidic media, characterization and adsorption properties
(Elsevier Science Sa, 2012-05)
Cerium(IV) oxide or ceria materials were synthesized in alkaline and acidic media, using cerium(IV) sulfate as ceria precursor and cetyltrimethylammonium tosylate as template, in order to evaluate the effect of pH on the ...
Effect of Cd(II) on the ripening of ferrihydrite in alkaline media
(Clay Minerals Society, 2012-04)
To acquire a better understanding of the influence exerted by the presence of Cd + during the process of transforming ferrihydrite to goethite, the morphological and structural changes of several samples obtained by the ...
Immobilization and stabilization of a bimolecular aggregate of the lipase from Pseudomonas fluorescens by multipoint covalent attachment
(2013-01-01)
The soluble lipase from Pseudomonas fluorescens (PFL) forms bimolecular aggregates in which the hydrophobic active centers of the enzyme monomers are in close contact. This bimolecular aggregate could be immobilized by ...
Immobilization and stabilization of a bimolecular aggregate of the lipase from Pseudomonas fluorescens by multipoint covalent attachment
(2013-01-01)
The soluble lipase from Pseudomonas fluorescens (PFL) forms bimolecular aggregates in which the hydrophobic active centers of the enzyme monomers are in close contact. This bimolecular aggregate could be immobilized by ...
Properties of dental resins submitted to pH catalysed hydrolysis
(ELSEVIER SCI LTDOXFORD, 2012)
Objectives: This study evaluated the surface microhardness (SM) and roughness (SR) alterations of dental resins submitted to pH catalysed degradation regimens. Methods: Thirty discs of each TPH Spectrum (Dentsply), Z100 ...