| abstract |
The invention discloses an ion-exchange type COF@MOF/M composite material and a preparation method thereof. MOF crystal materials are first synthesized, then COF@MOF materials are synthesized, and exchange metal ions are finally introduced to form an ion-exchange type COF@MOF/M composite material. Material. The invention fixes metal ions at the nodes of the core-shell structure after the synthesis of the COF@MOF core-shell structure to exert single-atom catalytic activity; COF coats the MOF to form the COF@MOF core-shell structure, and on the one hand forms a multi-level pore structure, When adsorbing small molecules of pollutants, there will be a progressive effect layer by layer, and a nano-confinement effect will be formed in the middle of the lamella to improve the catalytic performance. It will cause the structure to collapse and maintain the shape of the original skeleton; when the ion-exchanged COF@MOF/M composite material prepared by the method of the present invention is used to catalyze the degradation of styrene, the degradation efficiency is obviously improved by more than 30%. |