过渡金属/锰复合氧化物热敏降解有机染料
摘 要随着经济的飞速发展，水质污染日益严重，寻找能有效降解污染物的方法已迫在眉睫。丁凤等人采用高温固相合成法制备CuMn2O4/NiMn2O4热敏催化剂，用于近常温热催化降解亚甲基蓝，实验发现降解效果很好。本论文研究了三种过渡金属/锰复合氧化物对于有机染料的降解效果。具体内容如下：首先通过“水热法”合成模板SBA-15，再将制备好的硝酸盐混合液填入到孔隙中，在未经干燥的情况下用不同温度焙烧，冷却后碱洗去除模板得到三种热敏催化剂，通过XRD和SEM等手段对样品进行了表征。最后将催化剂用于亚甲基蓝、甲基橙、罗丹明B染料的降解，通过观察颜色变化来判断降解效果。结果表明三种催化剂只对亚甲基蓝起作用，实验操作简单方便，反应条件温和，对环境无污染。88924
With the rapid development of economy, water pollution is increasingly serious, Finding ways to effectively degrade pollutants is imminent。 Ding Feng and other people prepared CuMn2O4/NiMn2O4 thermal catalyst by high temperature solid phase synthesis method for the photo-catalytic degradation of methylene blue in near-constant temperature。 The results showed that the degradation effect was good。 In this paper, the degradation effects of three transition metals/manganese composite oxides on organic dyes were studied。 The main contents are as follows: First, the template SBA-15 is synthesized by "hydrothermal method", and the prepared nitrate mixture is filled into the pores, calcined at different temperatures without drying, and then washed to remove the template Three kinds of thermo-sensitive catalysts were obtained。 The samples were characterized by XRD and SEM。 Finally, the catalyst was used for the degradation of methylene blue, methyl orange and rhodamine B, and the degradation effect was judged by observing the color change。 The results show that the three catalysts only play a role in methylene blue, the experimental operation is simple and convenient, the reaction conditions are mild and the environment is not polluted。
毕业论文关键词：SBA-15；染料降解；过渡金属；热敏催化
Keyword: dye degradation；transition metal；thermal catalysis
目 录
1 前言 4
1。1 全球水资源状况 4
1。2 有机染料污染物源Q于D优G尔X论V文Y网wwW.yOueRw.com 原文+QQ75201`8766 去除的传统方法 4
1。2。1 混凝沉降法 4
1。2。2生物降解法 5
1。2。3 光催化降解法 5
1。3 介孔材料在污水处理中的应用 5
1。4 实验思路 6
2 实验部分 7
2。1 实验仪器和试剂 7
2。1。1 实验仪器 7
2。1。2 实验试剂 7
2。2 SBA-15的合成 7
2。3 金属/锰复合氧化物的合成 8
2。3。1 铁锰氧化物的合成 8
2。3。2 钴锰氧化物的合成 8
2。3。3 镍锰氧化物的合成 8
2。4 二氧化硅模板的去除 8
2。5 染料降解的实验过程 8
3 实验结果 9
3。1 SBA-15模板的结构分析