Study on the Photocatalytic Degradation of 2,4-Dichlorophenol by Bagasse Cellulose Based Zn3In2S6
In this study,bagasse cellulose based Zn3In2S6(SBC@ZIS)photocatalyst was prepared by chemical crosslinking method using bagasse cellulose and Zn3In2S6 as raw materials.And 2,4-dichlorophenol(2,4-DCP)was degraded by SBC@ZIS.Physical characteristics of SBC@ZIS were analyzed by FT-IR,UV visible diffuse reflection,SEM-EDS,XPS and XRD.Performance of SBC@ZIS for 2,4-DCP degradation was analyzed by high performance liquid chromatography and TOC.The FT-IR and XRD results confirmed that the binding of SBC with ZIS did not significantly alter the structure of ZIS.Through SEM-EDS characterization,it was found that there were O,C,Zn,In,and S elements on the SBC carrier.In XPS characterization,SBC@ZIS exhibited the same diffraction peak as ZIS.The SEM-EDS and XPS characterizations demonstrated that ZIS was well loaded on SBC.The UV-Vis diffuse reflection showed that the light absorption range of ZIS was red shifted from 524 nm to 600 nm after it was fixed in SBC,indicating that SBC@ZIS is conducive to improving the absorption range of ZIS in visible light.Through single factor experiments,it can be concluded that under optimal condi-tions,the degradation rate of 2,4-DCP(50 mg/L)by SBC@ZIS can reach 87％,which is 10 percentage points higher than that by ZIS alone.And the removal rate of TOC reached 71％,which is 17 percentage points higher than ZIS.Loading Zn3In2S6 onto bagasse cellulose not only improves its recycling efficiency,but also enhances its photocatalytic performance,providing a new approach for the efficient degradation of 2,4-DCP.
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