| abstract |
The invention relates to a preparation method and application of an α-FeOOH@diatomite composite material. Using cheap diatomite, ferric nitrate nonahydrate and polyvinyl alcohol as raw materials, by adding ferric nitrate and diatomite to polyvinyl alcohol The precursor was obtained by stirring in an aqueous solution and air-dried naturally, and then calcined at high temperature to obtain α-FeOOH@diatomite composite material. High-temperature calcination was used to remove impurities on the surface and pores of diatomite, and at the same time, α-FeOOH was formed under high temperature conditions. FeOOH is also loaded on diatomite to improve the stability of α-FeOOH and the adsorption performance of diatomite; the α-FeOOH@diatomite composite material prepared by the method of the present invention has good resistance to lead ions, copper ions and cadmium ions. Has better adsorption. The invention has rich raw material sources, simple preparation process, cost saving and convenient use, and is suitable for treating lead ions, copper ions and cadmium ions in the water environment, and especially has outstanding adsorption effect on lead ions. |