▎ 摘　　要

NOVELTY - Method for preparing bismuth tungstate-graphene conductive hydrogel, involves (i) mixing sodium tungstate, bismuth nitrate and cetyl trimethylammonium bromide and dissolving in water, stirring, performing hydrothermal reaction, sequentially washing and drying to obtain lamellar bismuth tungstate, (ii) dissolving the lamellar bismuth tungstate and ultrasonically peeling to obtain dispersed two-dimensional bismuth tungstate nanosheets, (iii) dissolving graphene, and performing laser processing to obtain graphene quantum dots, (iv) mixing dispersed two-dimensional bismuth tungstate nanosheets with graphene quantum dots to perform laser ablation composite to obtain graphene-bismuth tungstate, (v) mixing graphene-bismuth tungstate, acrylamide solution, cross-linking agent and initiator, and polymerizing, (vi) mixing product obtained in step (v) with aniline solution, and leaving still, and (vii) mixing product obtained in step (vi) with the initiator solution and polymerizing. USE - The method is useful for preparing bismuth tungstate-graphene conductive hydrogel used for electrolysis catalyst (claimed) for photoelectric degradation or cathode hydrogen evolution reaction of electrolysis water. ADVANTAGE - The conductive hydrogel improves the electrocatalytic performance, prevents the catalyst from agglomeration, increases the catalyst's catalysis area, and is easy to recover after catalysis. DETAILED DESCRIPTION - Method for preparing bismuth tungstate-graphene conductive hydrogel, involves (i) mixing sodium tungstate, bismuth nitrate and cetyl trimethylammonium bromide and dissolving in water, stirring, performing hydrothermal reaction, after the hydrothermal reaction is completed, sequentially washing and drying to obtain lamellar bismuth tungstate, (ii) dissolving the lamellar bismuth tungstate and ultrasonically peeling to obtain dispersed two-dimensional bismuth tungstate nanosheets, (iii) dissolving graphene, and performing laser processing to obtain graphene quantum dots, (iv) mixing the dispersed two-dimensional bismuth tungstate nanosheets with the graphene quantum dots to perform laser ablation composite to obtain graphene-bismuth tungstate, (v) mixing the graphene-bismuth tungstate, acrylamide solution, cross-linking agent and initiator, and polymerizing to obtain a product, (vi) mixing the product obtained in step (v) with aniline solution, and leaving still to obtain a product, and (vii) mixing the product obtained in step (vi) with the initiator solution and polymerizing to obtain the conductive hydrogel product of bismuth tungstate-graphene-polyacrylamide-polyaniline.