▎ 摘　　要

NOVELTY - Preparation of bismuth/graphitic carbon nitride (Bi/g-C3N4) semimetal-organic composite light catalyst comprises taking precursor, graphene-type carbide and nitrogen substance, mixing to obtain mixture, adding 1 ml/L nitric acid solution to obtain mixture solution, regulating pH at 1-2, heating in reducing system by reducing solvent, in-situ depositing and heating at 80-210 degrees C for 1-48 hours. USE - Method for preparing Bi/g-C3N4 semimetal-organic composite light catalyst (claimed). ADVANTAGE - The catalyst solves the problem about using expensive noble metal light catalyst. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of preparation of bismuth/graphitic carbon nitride semimetal-organic composite light catalyst (Drawing includes non-English language text).