Adopting the method of solvothermal synthesis,using copper chloride and sulfur powder as copper source and sulfur source respectively,and the mixture of water and ethanol as a composite solvent.By regulating the proportion of raw materials,a tetrasulfide seven copper/copper oxide (Cu7S4/CuO) micro-nano-composites which was composed of rod-like Cu7S4and flocculent CuO was synthesized in one step.How the amount of sulfur powder affected the synthetic product was studied.The microstructure of the samples was characterized by X-ray diffractometry (XRD),scanning electron microscopy (SEM),energy dispersive spectroscopy (EDS),and the photocatalytic degradation experiments were carried out using methylene blue (MB) as the target degradation material.It can be found that the synthesized samples were Cu7S4/CuO.In the presence of a small amount of hydrogen peroxide (H2O2),Cu7S4/CuO had a good photocatalytic degradation effect in a reacting independently way,whose photocatalytic degradation rate was about 6.92 times than that of H2O2 alone as catalyst.Moreover,samples with more heterostructures,will be of better photocatalytic degradation effect,and its degradation rate of MB was over 95% within 25 minutes.
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基金资助
国家自然科学基金(NSFC51506018);重庆市基础与前沿研究计划项目(cstc2015jcyjA50025);重庆交通大学交通土建工程材料国家地方联合实验室开放基金(LHSYS-2014-004);重庆交通大学研究生教育创新基金项目(2018S0146)
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