Novel Magnetically Separable Reduced Graphene Oxide (RGO)/ZnFe2O4/Ag3PO4 Nanocomposites for Enhanced Photocatalytic Performance toward 2,4-Dichlorophenol under Visible Light

作者：Chen, Xiaojuan; Dai, Youzhi^*; Guo, Jing; Liu, Tanhua; Wang, Xingyan

来源：Industrial & Engineering Chemistry Research, 2016, 55(3): 568-578.

DOI：10.1021/acs.iecr.5b03690

• HIGHLY EFFICIENT
• FACILE SYNTHESIS
• CATALYTIC DEGRADATION
• ORGANIC POLLUTANTS
• COMPOSITES
• AG3PO4
• STABILITY
• HYBRID
• SEMICONDUCTOR
• HETEROSTRUCTURE

Novel magnetically separable nanocomposite photocatalyst reduced graphene oxide (RGO)/ZnFe2O4/Ag3PO4, prepared by the solvothermal and in situ precipitation method, was first investigated as the photocatalyst for 2,4-dichlorophenol (2,4-DCP) degradation under visible light irradiation. The catalysts with different mass ratios were systematically characterized with FT-IR, XPS, XRD, SEM, FESEM, UV-vis, and PL. The nanocomposite RGO/ZnFe2O4/Ag3PO4 showed enhanced photocatalytic activity and stability compared with pure Ag3PO4 under the same conditions. During the photocatalysis process, intermediates of 4-chlorophenol (4-CP) and some other low molecular weight acids, including maleic acid, glyoxylic acid, glycolic acid, oxalic acid, acetic acid, and formic acid were detected through GC/MS. According to these analyses and the capture experiments of reactive species, the photocatalytic mechanism of RGO/ZnFe2O4/Ag3PO4 was discussed on the basis of the heterojunction energy-band theory and Z-scheme theory, and a possible degradation pathway of 2,4-DCP was also proposed.

• 出版日期2016-1-27
• 单位湘潭大学