Biomass/iron-based organic framework composite and preparation method and use thereof

Abstract

A biomass/iron-based organic framework composite and a preparation method and use thereof are provided. The preparation method includes: adding chitosan, an iron-based organic framework MIL-88(B), and a crosslinking agent to an acetic acid solution, thoroughly mixing, and heating in a water bath; and adding a mixed solution dropwise, and allowing a reaction to produce the biomass/iron-based organic framework composite. The biomass/iron-based organic framework composite prepared by the present disclosure has a phosphate adsorption capacity of 1.1 mmol/g, which is higher than the corresponding adsorption capacities of a pure iron-based organic framework material and a pure biomass-based material. Under the optimal adsorption pH condition, a loss of an iron-based organic framework material is less than 1%.