▎ 摘　　要

NOVELTY - Preparing graphene/europium oxide photoelectric composite material, comprises: (i) dispersing graphene oxide ultrasonically in water to obtain uniformly dispersed graphene oxide solution; (ii) adding europium nitrate and carrying out ultrasonic treatment; (iii) agitating and reacting to obtain graphite oxide/europium hydroxide composite material; (iv) adding sodium borohydride; (v) agitating and reacting, filtering, washing, drying and grinding to obtain graphene/europium hydroxide composite material; and (vi) sintering the composite materials high temperature to obtain the composite material. USE - The method is useful for preparing graphene/europium oxide photoelectric composite material. ADVANTAGE - The method: exhibits simple and convenient operation, mild reaction conditions, environmental friendly, low cost, high productivity and suitable for industrial production; and produces the composite material, which has excellent optical and electrical property, and good thermal stability. DETAILED DESCRIPTION - Preparing graphene/europium oxide photoelectric composite material, comprises: (i) dispersing graphene oxide ultrasonically in water to obtain uniformly dispersed graphene oxide solution; (ii) adding europium nitrate whose mass ratio to the graphene oxide is 3-15%, and carrying out ultrasonic treatment for 20-30 minutes; (iii) agitating to react at 80-100 degrees C for 16-24 hours to obtain graphite oxide/europium hydroxide composite material; (iv) adding sodium borohydride which is 8-12 times of the graphite oxide in mass; (v) agitating to react about 2-3 hours at 70-80 degrees C, filtering, washing, drying and grinding to obtain graphene/europium hydroxide composite material; and (vi) sintering the composite materials for 3-4 hours at high temperature of 400-500 degrees C to obtain the graphene/europium oxide photoelectric composite material. An INDEPENDENT CLAIM is also included for a graphene/europium oxide photoelectric composite material obtained using the above method.