2 documents found, page 1 of 1
Photocatalytic decolorization of methylene blue in the presence of TiO2/ZnS nan...
Franco, A.; Neves, M.C.; Ribeiro Carrott, M.M.L.; Mendonça, M.H.; Pereira, M.I.; Monteiro, O.C.The synthesis of distinct nanocrystalline TiO2 capped ZnS sampleswas carried out using a chemical deposition method. The materials characterization showed that the presence of ZnS onto TiO2 surface results in a red shift of the material band edge when compared with the initial semiconductor. The photocatalytic activity of the prepared nanocomposites was tested on the decolorization of methylene blue (MB) aqueou...
Corrosion of brass in a natural and artificial seawater under anaerobic conditions
Bastos, M.C.; Mendonça, M.H.; Neto, M.M.M.; Rocha, M.M.G.S.; Proença, L.; Fonseca, I.T.E.The corrosion of brass in deoxygenated nonbuffered and buffered artificial and natural seawater was studied. The weight gains and the average corrosion rates of brass samples, immersed in both media during periods of 1 week, 1 and 3 months, were determined. The morphology of the corroded surfaces, with and without the corrosion products, was analyzed by visual observation and scanning electron microscopy (SEM)....