摘要：用CuCl2和硫脲为反应物， C2H5OH和蒸馏水分别按不同比例从1:1-1:4混合后，温度从120 ℃至160 ℃作为反应温度,反应时间从12 h到14 h不等,采用水热法合成CuS纳米颗粒。CuS纳米粒子直径约350 nm。CuS纳米化不但可以增强其氧化还原能力还可以使其催化光速率变快。碳化氮是世界近年来研究的比较热的一种物质、它具有光学，热力学等方面有较大的应用。将金属氧化物CuS与碳化氮复合可以得到性能更好的CuS/g-C3N4。所以用法用CuS和碳化氮一起水热合成方反应和超声法制取g-C3N4/CuS。在实验室没有碳化氮的条件下需要自己想办法采取两种方法合成这种物质。这次试验采用三聚氰胺和CO(NH2)2在反应得到碳化氮。然后将碳化氮与CuCl2、乙醇、硫脲在140 ℃进行水热反应得到所要的g-C3N4/CuS。第二种方法是超声碳化氮30分钟，然后加入CuS和酒精超声可得到g-C3N4/CuS。最后根据生成物的相貌和XRD图像、红外光谱可以确定最后的生成物是CuS/g-C3N4。84623

毕业论文关键词：CuS/g-C3N4复合物；水热反应；光催化材料

      Preparation and Photocatalytic Characterization of CuS/g-C3N4 Composites

Abstract: Using CuCl2 and thiourea as reactants, C2H5OH and distilled water respectively in different proportions from 1:1-1:4 after mixing, temperature from 120 ℃ to 160 ℃ as the reaction temperature, reaction time from 12 h to 14 h ranging, using hydrothermal method to synthesize x nano particles。 Cus nanoparticles with a diameter of about 350 nm。 Cus nanoparticles can not only enhance their redox ability, but also make the catalytic speed of light faster。 G-C3N4 is a relatively hot material in the world in recent years。 It has great application in optics, thermodynamics and so on。 The metal oxide CuS and g-C3N4 composite can get better performance CuS/g-C3N4。 So the use of CuS and g-C3N4 together with the hydrothermal synthesis reaction and ultrasonic method to take g-C3N4/CuS。 In the laboratory without g-C3N4 conditions need to think of ways to take two methods to synthesize this material。 Can speak the solution to discard the supernatant part then the remaining solution poured into already cleaned centrifuge tube, with distilled water the vessel wall and washed twice, to ensure that precipitation can at low speed centrifuge centrifuge。Can speak the solution to discard the supernatant part then the remaining solution poured into already cleaned centrifuge tube, with distilled water the vessel wall and washed twice, to ensure that precipitation can at low speed centrifuge centrifuge。This test using melamine and CO (NH2) 2 in the reaction to get g-C3N4。 And then the g-C3N4 and Cucl2, ethanol, thiourea at 140 ℃ to get the water thermal reaction to get the g-C3N4/CuS。 The second method is ultrasound g-C3N4 30 minutes, and then add CuS and alcohol ultrasound can be obtained g-C3N4/CuS。 Finally, according to the appearance of the product and the XRD image, the infrared spectrum can determine the final product is CuS/g-C3N4。

Key Words: CuS/g-C3N4 Composite; The morphology of composites; New semiconductor catalyst

目    录

摘  要 1

引  言 2

1 实验部分 3

1。1实验仪器及试剂 3

1。2 实验步骤 3

2 结果与讨论 6

2。1 X-射线粉末衍射仪(XRD)分析 6

2。2 扫描电子显微镜(SEM)分析 8

2。3 傅里叶变换红外光谱（FT-IR）分析 11

3 结论 12

参考文献