OBSERVATION OF ADSORBED WATER ON VARIOUS MATERIALS BY AFM AND FT-IR

Previous AFM observation showed that small water droplets and water fi lm were observed on the surface when pure water or aqueous solution wa s poured on graphite or mica. In this experiment, pouring pure water a nd 0.01 kmol.m(-3) CuSO4 + H2SO4 aqueous solution on graphite, adsorbe d water observed by AFM was tried to detect by the FT-IR microscope. T he existence of adsorbed water on the surface of gold and pure iron wa s also examined by the FT-IR microscope and BFM. The results showed th at the peak of water was observed near 1590 cm(-1) on the surface of g raphite, gold and pure iron. The existence of liquid film of which thi ckness is 2 nm was confirmed by the AFM observation. From these result s, there is the high possibility that the water film exists on the met al surface used for present experiment.