Construction of novel metal-free graphene oxide/graphitic carbon nitride nanohybrids on carbon cloth and efficient degradation of RhB under visible light irradiation

• 1.The method of electrodeposition is adopted constructing GO/g-C 3 N 4 heterojunctions on CC has been realized. • 2. GO/g-C 3 N 4 /CC can be easily recycled and remains good stability. • 3. The synthesis and preparation of GO/g-C 3 N 4 /CC are very simple. • 4. The photocatalyst grows in situ on CC, easy to separate, easy to recover and high stability. • 5. A multilayer photocatalytic reactor was fabricated. Photocatalytic technology has a wide range of application prospects, but due to the low degradation efficiency of photocatalytic materials at the present stage, difficult to recycle and other problems, seriously restricted its development, so it is urgent to prepare the efficient photocatalytic material. This article reports a novel metal-freephotocatalyst of the construction of graphene oxide (GO)/graphite-phase carbon nitride (g-C 3 N 4 ) heterojunction on carbon cloth (CC). The GO/g-C 3 N 4 /CC photocatalyst has excellent degradation rate of Rhodamine B (RhB) in the visible light. Due to the formation of a heterojunction between g-C 3 N 4 and GO, the light absorption of the photocatalyst was improved and the rapid recombination of photocarriers was reduced. After 5 cycles, there was no significant reduction in photocatalytic activity. We designed a new type of multi-layer membrane filter photocatalytic reactor, RhB put into the device to simulate the flow of waste water and degrade. The results show that the filter film photocatalyst shows good photocatalytic activity of RhB degradation. The introduction of carbon cloth substrate solves the problems of separation and cycle life of this photocatalyst.