A NOVEL Z-SCHEME HETEROSTRUCTURED AgI/AgFeO2 COMPOSITES AS AN EFFICIENT VISIBLE-LIGHT PHOTOCATALYST FOR THE DEGRADATION OF RHODAMINE B

作者：Song, Z.^*; He, Y. Q.; Wang, F.

来源：Digest Journal of Nanomaterials and Biostructures, 2017, 12(3): 645-651.

• AgI/AgFeO2
• Z-scheme heterostructured
• stability
• degradation efficiency

This paper reported a novel Z-scheme heterostructured AgI/AgFeO(2)composite was synthesized by a facile precipitation method and its physicochemical property was characterized by XRD, SEM, EDS etc. The AgI particles were successfully loaded on the surface of the AgFeO2 particles. The photocatalytic performances of AgI/AgFeO2 composites were studied using Rhodamine B(RhB). As compared to pure AgFeO2, the Z-scheme heterostructured AgI/AgFeO2 photocatalysts exhibited superior degradation and stability in the visible-light region. The removal of RhB solution via I/Fe-3 composite was about 98.31% within 60 min. For the enhanced photocatalytic property of the AgI/AgFeO2 composites, the effective electron-hole separation and close interphase contact coupling of AgI and AgFeO2 may play important roles. The cyclic characterization and active specials trapping experiments indicated that the structure of Z-scheme can obviously enhanced the efficiency of photogenerated electron-hole pairs and produce more center dot O-2(-), which played a dominant role in the removal of dye of RhB.

• 出版日期2017-9
• 单位长春师范大学