Determination of specific surface area of copper, zinc, stannous and molybdenum ferrocyanides by dye adsorption

摘要

The adsorption of methylene blue, a cationic organic dyestuff on copper, zinc, stannous and molybdenum ferrocyanides has been studied. High adsorption capacity has been observed for molybdenum ierrocyanide while it is minimum with stannous ferrocyanide. Methylene blue adsorption on these ferrocyanides follows Langmuir adsorption isotherm. Surface area of ferrocyanides has been calculated with the help of dye adsorption and the results indicate that molybdenum ferrocyanide is highly porous with specific surface area of 26.59 m~2 g~(-1).