Photocatalytic degradation of xanthates under visible light using heterogeneous CuO/TiO_(2)/montmorillonite composites  

作　　者：Sikai Zhao Hong Xiao Yunshuang Chen Yaozhong Qi Chenghao Yan Ruixue Ma Qiang Zhao Wenbao Liu Yanbai Shen 

机构地区：[1]School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China

出　　处：《Green and Smart Mining Engineering》2024年第1期67-75,共9页绿色与智能矿业工程（英文）

基　　金：supported by the National Natural Science Foundation of China (Nos.52274255 and 51674067);National Key R&D Program of China (No.2020YFB2008702);Fundamental Research Funds for the Central Universities (Nos.N2301003,N2201008,N2201004,and N2301025);Liaoning Revitalization Talents Program (No.XLYC1807160);Postdoctoral Foundation of Northeastern University,Young Elite Scientists Sponsorship Program by CAST (No.2022QNRC001);China Postdoctoral Science Foundation (No.2022M720025).

摘　　要：Due to the significant demand for xanthate treatment in mineral effluents,photocatalytic techniques have emerged as one of the most promising solutions.In this study,a high-performance TiO_(2)/Cuo/montmorillonite photocatalyst was prepared.In this configuration,TiO_(2) was the classic photocatalytic material and CuO and montmorillonite were utilized to broaden the adsorption range of solar light and acted as carriers to support the photocatalyst.X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron spectroscopy were employed for the comprehensive characterization of the microstructure of the ternary photocatalyst.The results revealed that fine-sized TiO_(2) and Cuo nanoparticles were uniformly and tightly loaded on the montmorillonite layers.The photocatalytic properties of the photocatalyst were evaluated using sodium butyl xanthate as the target contaminant.For pristine TiO_(2),ultraviolet(UVv)light was required to effectively degrade sodium butyl xanthate.Meanwhile,the degradation reaction could be processed efficiently under visible light using the TiO_(2)/CuO/montmorillonite composite as the photocatalyst.Moreover,UV-visible diffuse reflectance spectroscopy,photoluminescence spectroscopy,and radical quench experiments were performed to elucidate the degradation process,and a possible degradation model and mechanism were proposed.

关 键 词：TiO_(2) CUO MONTMORILLONITE Visible-light photocatalysis XANTHATES 

分 类 号：TD985[矿业工程—选矿] TB33[一般工业技术—材料科学与工程]