Preparation of N-CDs@Nb2O5-AMMC nanomaterial and study of visible light photocatalytic property
In this paper,N-CDs and N-CDs-X@Nb2O5-AMMC nanomaterials modified with different contents of N-CDs have been successfully prepared by a simple hydrothermal method.N-CDs-X@Nb2O5-AMMC was char-acterized by XRD,SEM,TEM,FT-IR,XPS,UV-vis DRS and so on,and the results indicate that the band gap of Nb2O5-AMMC is narrowed after N-CDs modification,and the absorption band edge of the sample shows redshift and wider light absorption range,which is conducive to improving the photocatalytic performance.In addition,N-CDs reduces the resistance of electron transport,which is conducive to the transfer of photogenerat-ed electrons to the N-CDs structure.At the same time,the migration and separation efficiency of photogenerat-ed carriers are improved,which is conducive to the photocatalytic reaction.Compared with pure Nb2O5-AM-MC,N-CDs-X@Nb2O5-AMMC has improved photocatalytic degradation performance of TC-HCl under visible light,in which N-CDs-1@Nb2O5-AMMC has the highest degradation efficiency.The degradation rate of N-CDs-1@Nb2O5-AMMC for TC-HCl reaches 63.2％within 1h,which is 1.59 times of pure Nb2O5-AMMC.
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