SnNb2O6/CoFe-LDH sheet-sheet composite magnetic heterostructure catalyst as well as preparation method and application thereof

The invention discloses an SnNb2O6/CoFe-LDH sheet-sheet composite magnetic heterostructure catalyst, and belongs to the field of photocatalytic materials. The preparation method comprises the following steps: firstly, a tin niobate nano sheet is prepared by using a hydrothermal method, and then a CoFe-LDH nano sheet grows on the SnNb2O6 nano sheet by using the hydrothermal method, so that the SnNb2O6/CoFe-LDH composite photocatalyst is finally obtained. The preparation process disclosed by the invention is simple and easy to operate; reaction conditions are mild and easy to control; the obtained magnetic catalyst is high in photocatalytic performance and adsorption performance; and furthermore, under an external magnetic field, the catalyst is relatively high in magnetic response and is convenient to recycle and reuse. The catalyst can efficiently degrade organic pollutants in waste water under the irradiation of simulated sunlight. 本发明公开了种SnNbO/CoFe-LDH片片复合磁性异质结构催化剂，属于光催化材料领域。本发明首先用水热法制备铌酸锡纳米片，然后用水热法将CoFe-LD