▎ 摘　　要

NOVELTY - Preparing nitrogen and sulfur-doped graphene-copper(II) sulfide composite material comprises e.g. adding graphite powder and sodium nitrate into concentrated sulfuric acid to form first reaction system, adding potassium permanganate into the first reaction system under stirring, heating and continue stirring to obtain second reaction system, adding deionized water into the second reaction system, heating and continue stirring to obtain third reaction system, diluting the third reaction system with deionized water, and adding hydrogen peroxide to obtain fourth reaction system, allowing the fourth reaction system to stand, and removing the supernatant, washing the lower sediment, placing the obtained product in a dialysis bag to dialyze to neutrality, and then drying the dialysis product to obtain graphite oxide, dispersing graphite oxide in deionized water and mixing with thiourea and copper salt, and carrying out hydrothermal reaction to obtain final product. USE - The method is useful for preparing nitrogen and sulfur-doped graphene-copper(II) sulfide composite material. ADVANTAGE - The composite material has high catalytic activity. DETAILED DESCRIPTION - Preparing nitrogen and sulfur-doped graphene-copper(II) sulfide composite material comprises adding graphite powder and sodium nitrate into concentrated sulfuric acid to form first reaction system, adding potassium permanganate into the first reaction system under stirring, heating to the first predetermined temperature, and continue stirring for the first predetermined time to obtain second reaction system, adding deionized water into the second reaction system, heating to a second predetermined temperature, and continue stirring for second predetermined time to obtain third reaction system, diluting the third reaction system with deionized water, and adding hydrogen peroxide to it until there is no air bubble to obtain fourth reaction system, allowing the fourth reaction system to stand until delamination occurs, and removing the supernatant, washing the lower sediment, placing the obtained product in a dialysis bag to dialyze to neutrality, and then drying the dialysis product to obtain graphite oxide, dispersing graphite oxide in deionized water and mixing with thiourea and copper salt, and carrying out hydrothermal reaction to obtain final product.