| abstract |
The invention belongs to the technical field of pollutant treatment, and particularly discloses a cobalt-manganese hydrotalcite aerogel and a preparation method and application thereof. The method is (1) adding Co (NO) 3 ) 2 ยท6H 2 O and Mn (NO) 3 ) 2 Adding the aqueous solution into water to form a salt solution, mixing the salt solution with the aqueous solution to obtain Co precipitate 3 Mn-LDH; (2) mixing Co 3 And mixing Mn-LDH and a graphene oxide solution, performing ultrasonic dispersion, adding sodium ascorbate, performing heating reaction on the mixed solution, and performing freeze drying to obtain the cobalt-manganese hydrotalcite aerogel. Under the excitation of visible light, the hole-electron pair of the cobalt-manganese hydrotalcite accelerates the separation, and the excellent conductivity and wide electron transfer channel of the three-dimensional aerogel accelerate the conduction of electrons, so that persulfate is promoted to generate more active oxidants such as sulfate radicals and hydroxyl radicals to oxidize and decompose organic pollutants, and finally water and carbon dioxide are generated. |