Construction of Z-scheme heterojunction CuFe2O4/ZnIn2S4 and its photocatalytic degradation of TNT
To address the problems of high energy consumption,insecurity and environmental pollution in the TNT disposal process of munitions loadings,this study successfully prepared Z-scheme heterojunction CuFe2O4/ZnIn2S4 photocatalytic material by hydrothermal method using the green photocatalytic technology with no secondary pollution,and used a series of characterization methods(such as XRD and BET)to determine the organization and morphological characteristics of CuFe2O4/ZnIn2S4 and morphological features,and analyzed its photocatalytic performance and TNT degradation mechanism.The introduction of CuFe2O4 effectively promoted the separation of photogenerated charge carriers,extended the life of photogenerated carriers.The experiments showed that the 3％CuFe2O4/ZnIn2S4 composite showed the best degradation effect of 77.07％of the TNT within 2 h.Compared with CuFe2O4 and ZnIn2S4,the degradation effect is improved by 49.52％and 30.24％.Using the Z-scheme heterojunction CuFe2O4/ZnIn2S4,it effectively improves the degradation efficiency and safety of the waste TNT,eliminates the environmental pollution,and reduces the treatment cost.It is a scientific method for the waste TNT degradation with high quality and efficiency and low cost.
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