Graphite phase carbon nitride foam photocatalytic material and preparation method thereof

Abstract

The invention relates to a graphite phase carbon nitride foam photocatalytic material and a preparation method thereof. The preparation method includes adding 5-14 parts by mass of graphite phase carbon nitride to 100 parts by mass of deionized water, mixing, further adding 1.7-2.0 parts by mass of sodium dodecyl sulfate, 1.7-2.0 parts by mass of dodecyl alcohol and 1.7-2.0 parts by mass of resingum and stirring at 40-60 DEG C and 100-200 r / min for 10-20 minutes to obtain a mixed solution; stirring the mixed solution at 1500-2000 r / min for 15-20 min, then adding 5-14 parts by mass of binder and continuing stirring for 5-10 min to obtain graphite phase carbon nitride foam slurry; molding the graphite phase carbon nitride foam slurry by casting, freeze drying for 6-12 hours, and drying at 80-100 DEG C for 18-24 hours to obtain the graphite phase carbon nitride foam photocatalytic material. The preparation method has simple process and low cost. The prepared graphite phase carbon nitridefoam photocatalytic material has high photocatalytic hydrogen production efficiency.

Description

Technical field [0001] The invention belongs to the technical field of photocatalytic materials. Specifically, it relates to a graphite phase carbon nitride foam photocatalytic material and a preparation method thereof. Background technique [0002] Photocatalytic technology is the process of using photocatalytic materials to convert solar energy into chemical energy. It is based on the photoelectric conversion mechanism of photocatalytic semiconductors. After absorbing sunlight, electrons in the valence band are excited to transition to the conduction band, generating electrons and holes , Forming a redox barrier to achieve hydrogen production and CO reduction 2 And the purpose of degrading organic matter. As the core working component of the photocatalytic system, photocatalytic materials, whose structure and performance directly determine the efficiency of the photocatalytic reaction. The earliest photocatalytic material used is Ti 2 O, ZnO and SnO 2 Other metal oxide semico...

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Problems solved by technology

The published reports include: "Preparation of mesoporous C by molten salt method 3 N 4 Photocatalytic materials and their application in the field of photocatalysis" (CN102992282B) patent technology and "a carbon nitride g-C based on graphite phase 3 N 4 Photocatalyst and its preparation method and application” (CN201710236277.8) patented technology, the above-mentioned patented technology mainly uses molten salt synthesis technology and physical and chemical treatment methods to prepare powdery C with high specific surface area 3 N 4 Photocatalytic materials, but there is also the problem that the reaction medium is difficult to transport quickly in the system

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