ACTIVATED CARBON FOR PURIFYING WATER

摘要

PROBLEM TO BE SOLVED: To provide a silver coating film excellent in the adhesibility to an activated carbon and hardly soluble even increasing an amt. of the silver coating film in a granular or fibrous activated carbon, on which the silver coating film suitable for sterilizing a retained water in a water purifier is applied. SOLUTION: Silver having 0.01-1.0μm grain size and 0.1-5.0 atom% oxygen content is applied by 0.1-5.0 mass% by sputtering method to form the silver coating film.