摘要本实验以三聚氰胺为前驱体,通过高温热聚合,控制加热时间及温度等条件制得一系列g-C3N4产品。以各产品对甲基橙的光催化降解效率为考察因素,探究出最佳制备温度和时间分别为550℃,4h。在此基础上,掺杂金属元素Zn和非金属元素B,并在空气中煅烧氧化对其进行改性,然后进行光催化试验。通过XRD、TEM、FT-IR、XPS等对样品进行表征。结果表明:改性后g-C3N4的光催化效率显著提高,掺杂元素后的g-C3N4骨架结构没有改变,重新煅烧氧化后的g-C3N4的比表面积增大,因此其光催化活性明显提升。 73530
毕业论文关键词 g-C3N4 光催化 X射线衍射
毕业设计说明书外文摘要
Title Normative research of graphite carbon nitride synthesized by thermal condensation
Abstract In this experiment, a series of graphitic carbon nitride g-C3N4 materials were synthesized by the method of thermal polymerization on the basis of melamine used as precursor and controlling the heating time and temperature and so on。 According to the factors that the photocatalytic degradation efficiency of all products on MO, the results showed that the best temperature and time was 550℃ and 4h respectively 。 Then the B-doped, Zn-doped and oxydic g-C3N4 were synthesized。 Finally, the photocatalytic tests were carried out by degradation of MO, and the samples were characterized by XRD, TEM, FT-IR and XPS。 The results indicated that the photocatalytic efficiency of modified g-C3N4 was remarkably increased。 The melem skeleton construction of doped g-C3N4 has not changed, and oxydic g-C3N4 has a largest specific area resulted in the promotion of its photocatalytic activity 。
Keywords g-C3N4 photocatalytic X-ray diffraction
目 录
1 引言 1
1。1 研究背景 1
1。2 石墨相氮化碳简介 1
1。3 石墨相氮化碳的制备方法 2
1。3。1 固相反应法 3
1。3。2 溶剂热法 3
1。3。3 电化学沉积法 4
1。3。4 热缩聚法 4
1。4 应用前景 5
1。5 本课题研究的主要内容 6
2 实验过程及数据处理 7
2。1石墨相氮化碳最佳制备条件的探索 7
2。1。1实验仪器 7
2。1。2实验药品 7
2。1。3实验方案 7
2。1。4 实验步骤 7
2。1。5 数据分析及处理 8
2。2 石墨相氮化碳的改性 11
2。2。1 实验药品 11
2。2。2 实验仪器 11
2。2。3 实验方案 11
2。2。4 实验步骤 11
2。2。5 数据分析及处理 12
3 产品表征 14
3。1 实验仪器 14