▎ 摘　　要

NOVELTY - Silver phosphate/nickel-iron layered double hydroxide (LDH)/reduced graphene oxide (RGO) (where RGO is present at 2, 4 and 6 wt.%) ternary composite material comprising binary layered structure of silver phosphate/nickel-iron layered double hydroxide and reduced graphene oxide, respectively, is new. Preparation of silver phosphate/nickel-iron LDH/RGO ternary composite material, comprising loading of silver phosphate onto nickel-iron layered double hydroxide at 1 wt.%, 3 wt.% and 5 wt.%, respectively, and loading of reduced graphene oxide at 2 wt.%, 4 wt.% and 6 wt.%, respectively. USE - The silver phosphate/nickel-iron LDH/RGO material is useful for adsorption of textile dyes (claimed). ADVANTAGE - The silver phosphate/nickel-iron LDH/RGO material has 75% methylene blue and 90% methyl orange adsorption for 30 minutes at 25-30 degrees C (claimed), is highly resistive to photocorrosion with high stability and reusability (up to five cycles), and is obtained using a simple ultrasonic and hydrothermal heat treatment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) synthesizing silver phosphate/nickel-iron layered double hydroxide (5:1) comprising 0.25 M nickel(II) nitrate hexahydrate and 0.05 M ferric nitrate nonahydrate, respectively, comprising adding mixed solution of 0.25 M nickel(II) nitrate hexahydrate and 0.05 M ferric nitrate nonahydrate to 20 ml distilled and deionized water and adjusting the solution pH to pH 10 by slowly adding aqueous 1 M sodium hydroxide solution yielding a yellow precipitate, and centrifugation of the solution, washing the obtained as-prepared samples with decarbonized water 3-4 times and drying the washed samples in an oven at 80 degrees C; and (2) synthesizing silver phosphate comprising adding aqueous solution of ammonium dihydrogen phosphate to an aqueous solution of 0.1 M of silver nitrate and stirred for 1 hour at room temperature, centrifugation of the solution, washing the solid product (three times) with water and ethanol and then drying in an oven for 24 hours at 100 degrees C, where synthesizing silver phosphate (which is present at 1, 3 and 5 wt.%)/nickel-iron layered double hydroxide nanohybrid comprising dispersing nickel-iron layered double hydroxide in 50 ml of distilled water for 30 minutes, adding 0.1 M silver nitrate and stirring at room temperature for 1 hour, further adding an aqueous solution of ammonium dihydrogen phosphate and stirred for 1 hour, and centrifugation of the obtained solid product, washing and drying at 100 degrees C for 1 hour, where optimized 3 wt.% silver phosphate/nickel-iron layered double hydroxide was used for the preparation of ternary 1, 3 and 5 wt.% silver phosphate/nickel-iron layered double hydroxide composite material by dispersing 3 wt.% silver phosphate/nickel-iron layered double hydroxide and graphene oxide in distilled and deionized water and the dispersion was transferred to a PTFE container for hydrothermal treatment at 180 degrees C for 18 hours, centrifugation of the treated solution and washing the obtained as-prepared samples with deionized water 3-4 times and 1 time with ethanol, and all of the washed samples are dried in an oven at 110 degrees C accordingly 2, 4 and 6 wt.% silver phosphate/nickel-iron LDH/RGO ternary, composite is prepared.