▎ 摘　　要

NOVELTY - Preparing graphene coated kaolin nano composite material comprises e.g. (i) adding 0.1-0.5 g graphite oxide (GO) and 1-3 g kaolin, adding 100 ml deionized water, 0.1-0.5 g graphite oxide, 1-3 g kaolin, and 100 ml deionized water, stirring at room temperature for 10 minutes at speed of 200 revolutions/minute (rpm), (ii) adding 1 g polyethylene glycol-polystyrene (PS-PEG) resin into the solution of step (i), heating at 60-80 degrees C, and stirring at speed of 300 rpm for 3 hours, (iii) cooling the solution obtained in the step (ii) to room temperature, introducing into the photoreactor, irradiating and reacting by YLS-2000 laser, reacting for 6 hours to obtain black suspension, (iv) placing the suspension obtained in the step (iii) in a 150 ml mixture of deionized water and n-butanol in a ratio of 1:1, ultrasonically treating, filtering, washing the filter cake with deionized water until the quality is constant, (v) vacuum drying the filter cake, and grinding the dried filter cake. USE - The method is useful for preparing graphene coated kaolin nano composite material. ADVANTAGE - The method: is simple and fast; has low cost; and is environmentally friendly. DETAILED DESCRIPTION - Preparing graphene coated kaolin nano composite material comprises (i) adding 0.1-0.5 g graphite oxide (GO) and 1-3 g kaolin, adding 100 ml deionized water, 0.1-0.5 g graphite oxide, 1-3 g kaolin, and 100 ml deionized water, stirring at room temperature for 10 minutes at speed of 200 revolutions/minute (rpm), (ii) adding 1 g polyethylene glycol-polystyrene (PS-PEG) resin into the solution of step (i), heating at 60-80 degrees C, and stirring at speed of 300 rpm for 3 hours, (iii) cooling the solution obtained in the step (ii) to room temperature, introducing into the photoreactor, irradiating and reacting by YLS-2000 laser, reacting for 6 hours to obtain black suspension, (iv) placing the suspension obtained in the step (iii) in a 150 ml mixture of deionized water and n-butanol in a ratio of 1:1, ultrasonically treating for 2-3 hours at power of 80-120 W, 30-50 KHz, filtering, washing the filter cake with deionized water until the quality is constant, (v) vacuum drying the filter cake obtained in the step (i) at 50-80 degrees C for 8-10 hours, and grinding the dried filter cake to obtain graphene-coated kaolin nanocomposite.