摘要：本文以凹凸棒土（凹土，ATP）为载体，通过冷凝回流结合冷冻干燥的方法，将g-C3N4包覆在凹土表面制备出ATP/g-C3N4复合材料，随后将不同配比的ZnO原位沉积在ATP/g-C3N4的表面，成功制备出凹土/g-C3N4-氧化锌复合材料（ATP/g-C3N4-ZnO）。利用XRD、BET、SEM、UV-vis等分析测试方法对材料进行表征，结果表明，g-C3N4、ZnO被均匀负载于凹土表面。以可见光催化降解甲基橙为探针研究复合催化剂的光催化性能，通过调节ZnO与ATP/g-C3N4的配比，从而筛选光催化性能最佳的复合光催化剂。实验结果表明，ATP/g-C3N4-ZnO明显优于g-C3N4、ZnO。在ATP/g-C3N4-ZnO复合材料中，以质量比为m(ZnO): m(ATP/g-C3N4)=0。3的性能最好，催化剂投料量为1。0g/L，暗吸附30min，加入1mL过氧化氢，可见光反应180min，对10mg/L的甲基橙的去除率均能达到95%以上；并且催化剂可以重复回收使用。该研究对于拓宽凹凸棒土（ATP）应用的领域具有重要的意义。 92714

毕业论文关键词：可见光催化，金属氧化物，甲基橙，石墨相碳化氮

Abstract：In this paper, attapulgite/g-C3N4-Zinc Oxide (ATP/g-C3N4-ZnO) was successfully prepared by coating g-C3N4 on the surface of attapulgite to form ATP/g-C3N4 and then depositing different ratio of ZnO onto ATP/g-C3N4。 Especially, freeze-drying and reflux condensation methods were used in whole procedure。 The materials were characterized by XRD, BET, SEM, UV-vis analysis methods。 The results show that g-C3N4 and ZnO were uniformly loaded on the surface of attapulgite。 Photocatalytic properties of the composite catalysts were investigated by degradating methyl orange under visible light radiation and the best photocatalytic performance of the composite was screened via adjusting the ratio of mZnO to mATP/g-C3N4。 The experimental results show that the photocatalytic activity of ATP/g-C3N4-ZnO is better than that of g-C3N4 and ZnO。 ATP/g-C3N4-ZnO composite exhibits the best photocatalytic performance when the mass ratio of m(ZnO): m (ATP/g-C3N4) =0。3。 The removal rate of 10mg/L methyl orange can reach more than 95% after adsorbing 30 min in dark, adding 1mL hydrogen peroxide and reacting 180 min under visible light。 On the other hand, the catalyst can be also recycled。 This study was important to broaden the application field of ATP。

Key word: Photocatalysis, Metal oxide, Methyl orange, Graphite, Nitrogen carbide 

目   录

1。前言 1

1。1氧化锌（ZnO）源F于K优B尔C论V文N网WwW.youeRw.com 原文+QQ752^018766 的结构特点及其研究现状 1

1。2石墨相氮化碳（g-C3N4）的特殊半导体特性 1

1。3凹凸棒土（ATP）的结构特点及其应用 2

1。4本文的研究思路 2

2。实验部分：ATP/g-C3N4-ZnO复合材料的制备 2

2。1实验试剂 2

2。2测试仪器 2

2。3 ATP的改性(ATP-KH560) 3

2。4 ATP/g-C3N4的制备 3

2。5 ZnO的制备 3

2。6 ATP/g-C3N4-ZnO复合材料的制备 3

2。7表征仪器与方法 3

2。8光催化性能测定 3

3。结果与讨论 4

3。1表征谱图分析 4

3。1。1 XRD谱图分析