Research progress of graphitic carbon nitride based materials via template method and its photocatalytic property
As a new type of non-metallic polymer semiconductor,graphite phase carbon nitride(g-C3N4)has the properties of easy synthesis,non-toxic and harmless,acid and alkali corrosion resistance,and good environmen-tal affinity.The unique layered structure gives it a high specific surface area,and the moderate band gap width gives it better photocatalytic performance.However,pure phase g-C3N4 has the disadvantages of small specific surface area,insufficient active site,rapid carrier recombination and weak redox ability,which restrict its effec-tive application in the field of photocatalysis.Studies have shown that the structural regulation of g-C3N4 using a template induction process can effectively solve the above problems.In this paper,the template methods com-monly used for the preparation of graphite phase carbon nitride(hard template method,soft template method and biological template method)are reviewed,the progress of multiphase composite process is discussed,and the application of g-C3N4 based materials in photocatalytic degradation,CO2 conversion and hydrogen produc-tion are summarized.
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