Preparation method of g-C3N4-C-PDA composite material and g-C3N4-C-PDA composite material

• Main Authors: YANG WENXUAN, WANG WEI, DONG XINYU
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a preparation method of a g-C3N4-coated C-PDA composite material and the g-C3N4-coated C-PDA composite material. The preparation method comprises the following steps: (1) dispersing cyanuric acid, melamine and barbituric acid into deionized water; stirring at room temperature until the reaction is sufficient, and centrifugally drying to obtain a nitrogen-rich precursor; (2) dispersing the nitrogen-rich precursor into ethylene glycol, grinding to form white uniform slurry, and volatilizing the ethylene glycol in the nitrogen-rich precursor slurry to obtain nitrogen-rich precursor white powder; carrying out heating treatment to obtain g-C3N4; (3) blending a tris (hydroxymethyl) aminomethane aqueous solution and isopropanol, adding g-C3N4, carrying out sufficient ultrasonic dispersion, and adding a 1-5g/L dopamine hydrochloride aqueous solution; stirring at room temperature, centrifuging, washing with deionized water once, drying, and grinding to obtain g-C3N4 (at) PDA; (4) carrying out h