Preparation method of g-C3N4 catalyst for degrading tetracycline

The invention discloses a preparation method of a g-C3N4 catalyst for efficiently degrading tetracycline, which comprises the following steps: S1, mixing and stirring melamine and a cyanuric acid solution at room temperature to generate a precipitate, and filtering to obtain the precipitate; s2, the obtained precipitate is washed and dried, and a g-C3N4 precursor is obtained; s3, the obtained g-C3N4 precursor is placed in a protective atmosphere, heating and pyrolysis are conducted, and the g-C3N4 catalyst of the disordered structure is obtained. Experimental results show that the g-C3N4 catalyst has an ultrathin sheet-shaped porous morphology and a large specific surface area, has higher photo-induced electron hole separation efficiency, and shows high catalytic activity when tetracycline is subjected to photocatalytic degradation. 本发明公开了一种用于高效降解四环素的g-C3N4催化剂的制备方法，包括以下步骤：S1、将三聚氰胺、三聚氰酸溶液室温下混合，搅拌，生成沉淀后过滤，得到沉淀物；S2、将所得沉淀物进行洗涤，干燥，得到g-C3N4前躯体；S3、将所得g-C3N4前躯体置于保护性气氛下，升温，热解，得到结构无序的g-C3N4催化剂。实验结果表明，该g-C3N4催化剂具有超薄片状的多