Informamos que as validações de submissão estarão suspensas de 20/12/2019 a 05/01/2020, devido ao recesso de final de ano
Now showing items 1-9 of 9
Polishing of water treated by a biological process with heterogeneous photocatalysis
(Journal of Applied Sciences, 2010-04-20) [Artigo]
Effluent from a vegetal extraction plant situated in the region of Botucatu, state of São Paulo, Brazil was treated by combining a biological process and heterogeneous photocatalysis. The biologically pretreated effluent ...
Schottky emission in nanoscopically crystallized Ce-doped SnO2 thin films deposited by sol-gel-dip-coating
(Thin Solid Films, 2008-11-28) [Artigo]
This paper reports the electrical effects of the incorporation of Ce(III) or Ce(IV) in SnO2 thin films, prepared by the sol-gel-dip-coating technique. This doping has drastically increased the resistivity compared to undoped ...
Application of mesoporous SBA-15 silica functionalized with 4-amino-2-mercaptopyrimidine for the adsorption of Cu(II), Zn(II), Cd(II), Ni(II), and Pb(II) from water
(Acta Chimica Slovenica, 2015-01-01) [Artigo]
This work reports the sol-gel synthesis of an SBA-15 silica and its functionalization with 4-amino-2-mercaptopyrimidine to perform adsorption of metal species from aqueous media. The functionalization of the material was ...
Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
(Orbital: the Electronic Journal of Chemistry, 2013) [Artigo]
The coagulation-flocculation of TiO2 in aqueous suspensions of low and intermediate ionic strength was investigated as a function of pH, of addition of aluminum sulfate and of stirring the suspension. This process was ...
Interface Formation and Electrical Transport in SnO2:Eu3+/GaAs Heterojunction Deposited by Sol-Gel Dip-Coating and Resistive Evaporation
(Journal of Electronic Materials, 2010-08-01) [Artigo]
The natural n-type conduction of tin dioxide (SnO2) may be compensated by trivalent rare-earth doping. In this work, SnO2 thin films doped with Eu3+ have been deposited by the sol-gel dip-coating (SGDC) process, topped by ...
PEDOT:PSS self-assembled films to methanol crossover reduction in Nafion (R) membranes
(Applied Surface Science, 2014-12-30) [Artigo]
Alternative energy sources are on a global demand, with fuel cells as promising devices from mobile to stationary applications. Nafion (R) is at the heart of many of these appliances, being mostly used due to its high ...
Characterization of corn (Zea mays) leaf powder and Its adsorption properties regarding Cu(II) and Cd(II) from aqueous samples
(Bioresources, 2015-01-01) [Resenha]
In this study, a green adsorbent made of corn leaf powder was applied in the removal of Cu(II) and Cd(II) from water samples. The material was characterized by Fourier transform infrared (FTIR) spectroscopy, which indicated ...
Heterojunction between Al2O3 and SnO2 thin films for application in transparent FET
(Materials Research-ibero-american Journal Of Materials, 2014-11-01) [Artigo]
Alternative materials for use in electronic devices have grown interest in the past recent years. In this paper, the heterojunction SnO2/Al2O3 is tested concerning its use as a transparent insulating layer for use in FETs. ...
Multilayer adsorption of Cu(II) and Cd(II) over Brazilian Orchid Tree (Pata-de-vaca) and its adsorptive properties
(Applied Surface Science, 2015-08-01) [Artigo]
Through very simple and inexpensive processes, pata-de-vaca leaves were turned into a powder and applied as an adsorbent for the uptake of Cu(II) and Cd(II) from water. The material was characterized through SEM, EDX, FTIR ...