EFFECT OF MEDIA ON MICROSTRUCTURE OF ELECTROPHRETICALLYDEPOSTED TiO2 LAYERS

In present study, the effect of two organic solvents, metanol and 1-propanol, on the deposition pattern of electrophoretically deposited TiO2 nano-particles on Cu substrate was investigated. Characterization of the obtained layer by scanning electron (SEM), atomic force microscopy (AFM) and optical microscope (OM) showed that a non-uniform porous layers were obtained in methanol, however, deposition from the TiO2/1-propanol cell resulted in the formation of a relatively uniform microstructure. The difference is attributed to considerably high deposition rate of TiO2 nanoparticles in methanol as well as the formation of large aggregates within the medium over time.

کلیدواژه ها:

TiO2 ، Electrophoretic deposition ، uniform layer ، methanol ، 1-propanol