A kind of graphite phase carbon nitride foam photocatalytic material and preparation method thereof

Abstract

The invention relates to a graphite-phase carbon nitride foam photocatalyst material and a preparation method thereof. Its technical scheme is: add 5-14 mass parts of graphite phase carbon nitride into 100 mass parts of deionized water, mix, then add 1.7-2.0 mass parts of sodium dodecylsulfonate, 1.7-2.0 mass parts Dodecyl alcohol and 1.7 to 2.0 parts by mass of resin glue are stirred at 40 to 60°C and 100 to 200r / min for 10 to 20 minutes to obtain a mixed solution; then the mixed solution is stirred at 1500 to 2000r / min 15 to 20 minutes, then add 5 to 14 parts by mass of binder, and continue to stir for 5 to 10 minutes to obtain a graphite-phase carbon nitride foam slurry; cast the graphite-phase carbon nitride foam slurry and freeze-dry for 6 to 12 hours , drying at 80-100° C. for 18-24 hours to obtain a graphite-phase carbon nitride foam photocatalyst material. The invention has simple process and low cost; the photocatalytic hydrogen production efficiency of the prepared graphite-phase carbon nitride foam photocatalytic material is high.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials. In particular, it relates to a graphite-phase carbon nitride foam photocatalyst 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, the electrons in the valence band are excited to jump to the conduction band, generating electrons and holes. , forming an oxidation-reduction barrier, thereby realizing hydrogen production and reduction of CO 2 and degradation of organic matter. Photocatalytic materials are the core working components of photocatalytic systems, and their structure and performance directly determine the efficiency of photocatalytic reactions. The earliest photocatalytic materials used were Ti 2 O, ZnO, and SnO ...

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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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