▎ 摘　　要

NOVELTY - Composition comprises metal-organic frameworks and porous carbon coated on the metal-organic frameworks. USE - The composition is useful for removing arsenic. ADVANTAGE - The composition form a strong chemical bond in the form by graphic carbon. The method is convenient and economical. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) manufacturing a composite, comprising preparing porous carbon using alginate, preparing a mixed solution by mixing a solution in which the porous carbon is dispersed and a solution containing an organic ligand and a metal ion, and hydrothermal carbonization of the mixed solution; and (2) arsenic removal method, comprising preparing an aqueous solution containing arsenic and adding the complex for removing arsenic to the aqueous solution.