Method for preparing nanometer zero-valent iron grain using improved liquid phase reduction method

摘要: The invention discloses a method for preparing nanometer iron particle with modified liquid phase reduction method. main steps comprise: soluble ferric salt solution and NaBH4 or KBH4 solution; adding polyethylene pyrrolidone into said according to certain proportion, stirring evenly; under continuous condition, continuously until changes black; selecting magnetic method; washing distilled water firstly, then acetone alcohol, storing in alcohol. needs no nitrogen protective device, process is easy operation, production cost low; the distribution of got homogenous (40-80nm), average size 60 nm, specific surface area 45-56m2/g, there oxide.