▎ 摘　　要

NOVELTY - Cadmium sulfide (CdS)/ graphene oxide (GO)/ nickel sulfide (NiS) ternary complex is formed by loading CdS, NiS nanoparticles onto a layered GO. The mass percentage of NiS in the composite ranges from 0.5-10% by weight, and the mass percentage of GO ranges from 0-10% by weight. USE - CdS/GO/NiS ternary complex used for preparing hydrogen by photocatalytic decomposition of water (all claimed). ADVANTAGE - The CdS/GO/NiS ternary complex has provides active sites for photo catalytic reduction reaction, has improves the utilization rate of the photo-generated electron, and has suitable for the field of photocatalytic decomposition of water to prepare hydrogen, degradation of pollutants. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing CdS/GO/NiS ternary complex, which involves placing a 250 mL beaker in an ice water bath and adding 50 mL of concentrated sulfuric acid;adding 2g graphite powder and 1g sodium nitrate solid under magnetic stirring, 6g potassium permanganate (control reaction temperature not exceeding 10 degrees C);stirring under ice water bath condition for 2 hours, taken out, stirring at room temperature for 5 days;using the sample for 5 wt.% sulfuric acid (H2SO4), diluting the solution: (2) stirring for 2 hours, adding 6 mL of hydrogen peroxide (H2O2), stirring for 2 hours;centrifuging, washing repeatedly with 6 mol of L-1HCl and H2O2 at a volume ratio of 2:8;finally washing with distilled water to pH-7, obtaining the yellow-brown precipitate as graphite oxide;drying the sample in a vacuum oven at 40 degrees C for 24 hours;placing the obtained graphite oxide in 100 mL of deionized water, 60 W power ultrasonic for 6 hours;precipitating overnight, taking the supernatant liquid for centrifugation, put it into an oven, and drying it in a vacuum oven at 40 degrees C for 12 hours to obtain graphene oxide;dispersing a certain amount of GO and Cd(CH3COO)2 2H2O into 80 mL of dimethyl sulfoxide (DMSO), forming a homogeneous solution;sonicating at 60 watt for 2 hours, transferring to a 150 mL reactor;reacting at 180 degrees C for 12 hours, and cooling to room temperature;separating the product by centrifugation;washing with acetone and ethanol respectively, removing the residual DMSO;drying the product in a vacuum oven at 40 degrees C for 24 hours;dispersing a certain amount of GO and Cd(CH3COO)2 2H2O into 80 mL of dimethyl sulfoxide (DMSO);forming homogeneous solution, sonicaing at 60 watt for 2 hours;transferring to a 150 mL reactor and reacting at 180 degrees C for 12 hours;cooling to room temperature, isolating the product by centrifugation;placing the initial product CdS/GO, a certain amount of Ni(NO3)2 6H2O, 20 mL DMSO in a 50 mL beaker;sonicating at 60 watt for 30 minutes, transferring to a 50 mL reaction kettle at 180 degrees C for 4 hours;cooling to room temperature, isolating the product by centrifugation;washing with acetone and ethanol, respectively, to remove residual DMSO;drying the product in a vacuum oven at 40 degrees C for 24 hours; and (3) a method of applying a CdS/GO/NiS ternary complex, which involves using the visible light wavelength range from 400-750 nanometer.