Now showing items 1-5 of 5
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 ...
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 ...