▎ 摘　　要

NOVELTY - Preparing three-dimensional melamine modified sponge involves (i) dissolving ammonium molybdate tetrahydrate in deionized water to obtain aqueous solution of ammonium molybdate tetrahydrate; (ii) adding thioacetamide to aqueous solution of ammonium molybdate tetrahydrate, stirring until mixed to obtain mixed solution of ammonium molybdate tetrahydrate; (iii) transferring mixed solution of ammonium molybdate tetrahydrate into hydrothermal kettle, and drying to obtain molybdenum disulfide (MoS2) nanosphere material; (iv) adding graphene into anhydrous ethanol, dispersing and mixing to obtain graphene oxide (GO) alcohol solution; (v) adding MoS2 nanosphere material to GO alcohol solution, dispersing and mixing to obtain MoS2 alcohol solution; (vi) adding sponge in MoS2 alcohol solution, and drying to obtain MoS2 sponge loaded with MoS2; (vii) immersing MoS2 sponge in the GO alcohol solution, and then drying to obtain the sponge MoS2@GO three-dimensional network composite material. USE - Method for preparing three-dimensional melamine modified sponge for liquid recycling residual chemical in water, where liquid is recovered water, and for removal of residual chemicals in the liquid, where liquid is recycled water (all claimed). ADVANTAGE - The prepared three-dimensional melamine modified sponge has excellent adsorption, stability, hydrophobicity and low cost, and easy to recycle, excellent carrier, sponge not only supports MoS2 and graphene oxide, but also supports MoS2 and graphene oxide. It also has a good adsorption effect on the residual dye chemicals in the water body, and significantly improves the removal effect of melamine modified sponge on residues. The material can not only help the recovery of residual substances in the water body, but also its own recovery is extremely convenient, which can effectively solve the problem of secondary pollution to the environment caused by some powder catalysts. DETAILED DESCRIPTION - Preparing three-dimensional melamine modified sponge involves (i) dissolving ammonium molybdate tetrahydrate in deionized water to obtain aqueous solution of ammonium molybdate tetrahydrate; (ii) adding thioacetamide to aqueous solution of ammonium molybdate tetrahydrate, and stirring until mixed to obtain mixed solution of ammonium molybdate tetrahydrate; (iii) transferring mixed solution of ammonium molybdate tetrahydrate into hydrothermal kettle, heating for reaction, and drying to obtain molybdenum disulfide (MoS2) nanosphere material; (iv) adding graphene into anhydrous ethanol, dispersing and mixing to obtain graphene oxide (GO) alcohol solution; (v) adding MoS2 nanosphere material to GO alcohol solution, dispersing and mixing to obtain MoS2 alcohol solution; (vi) adding sponge in MoS2 alcohol solution for 10-100 minutes, and drying to obtain MoS2 sponge loaded with MoS2; (vii) immersing MoS2 sponge in the GO alcohol solution for 10-100 minutes, and then drying to obtain the sponge MoS2@GO three-dimensional network composite material; and (viii) soaking obtained sponge MoS2@GO three-dimensional network composite material in inorganic salt solution, adjusting pH to 1-3, stirring, and drying to obtain melamine modified sponge.