Method for preparing rapid high-efficiency absorbent used for heavy metal ions

The invention relates to a method for preparing a rapid high-efficiency absorbent for heavy metal ions. The method comprises the following steps: dispersing 2-acrylamide-2-methyl propane sulfonate stabilized hectorite nano-particles in a solution of chitosan, acrylamide, acrylic acid and a cross-linking agent; and by taking potassium peroxodisulfate as an initiator, synthesizing an inorganic-organic nano composite gel type rapid high-efficiency absorbent. According to the method, the raw materials are cheap and readily available, the operation is simple, and aftertreatment is simple. Meanwhile, the gel belongs to an inorganic-organic nano composite material, is excellent in adsorptive property and rapid in adsorption and has application prospects in the field of environmental protection.