▎ 摘　　要

NOVELTY - Graphene-bridged Z-type silver phosphate/G/carbon nitride (Ag3PO4/G/C3N4) photocatalyst comprises silver phosphate, 0.05-5 wt.% carbon nitride, and 0.05-4.5 wt.% G charge transporter. USE - Graphene-bridged Z-type silver phosphate/G/carbon nitride photocatalyst (claimed). ADVANTAGE - The graphene-bridged Z-type silver phosphate/G/carbon nitride photocatalyst, which has characteristics of good stability and high photocatalytic degradation of dye. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene-bridged Z-type silver phosphate/G/carbon nitride (Ag3PO4/G/C3N4) photocatalyst, which involves: (A) dispersing 0.3429 g imidazole into 5 mL water, then adding 9.011 g urea to the above solution, then heating and stirring at 80 degrees C for 30 minutes, and semi-sealing, burning at 350 degrees C for 3 hours in a muffle furnace and then subjecting to natural cooling, and grinding to obtain C3N4 light yellow sample; (B) obtaining silver phosphate solition by dissolving 0.8075g silver nitrate into 20mL water, dispersing 0.7453g monosodium dihydrogen phosphate into 10mL water, and aqueous solution of monosodium dihydrogen phosphate is added dropwise to the aqueous solution of silver nitrate, stirred for 2 hours, centrifuging, drying at 70 degrees C for 12 hours, and crushing to obtain silver phosphate yellow sample; (C) dispersing certain amount of carbon nitride and 1.2704 g silver nitrate into 30mL water, stirring for 30 minutes, then ultrasonically dispersing for 100 minutes, dispersing for 0.3900g monosodium dihydrogen phosphate into 20mL water, and adding monosodium dihydrogen phosphateaqueous solution dropwise suspension, stirrring for 2 hours, centrifuging, drying at 70 degrees C for 12 hours, and crushing to obtain Ag3PO4 /C3N4-x% sample, where x% is C3N4 theoretical mass percentage; (D) obtaining Ag3PO4/G-y%/C3N4 by dissolving 0.0010 g C3N4, 1.2704 g silver nitrate and dispersing certain amount of G into 30 mL water, stirring for 30 minutes, and then ultrasonically dispersing for 100 minutes, then dispersing 0.3900g monosodium dihydrogen phosphate into 20mL water, adding monosodium dihydrogen phosphate aqueous solution dropwise to the above suspension, and stirring for 2 hours to obtain mixture; and (E) centrifuging the obtained mixture, then drying at 70 degrees C for 12 hours, and crushing to obtain a yellow sample of Ag3PO4/G-y%/C3N4, where y% is G theoretical mass percentage and obtaining the desired product.