摘要随着社会经济的发展，人们的生活水平不断提高，室内装修成为一个热门话题。 而装修的主要污染甲醛也成为人们关注的对象。甲醛属于一种常见的有机物污染物， 有一定的毒性，能引起白血病等人体疾病。这几年甲醛的去除成为人们研究热点。文 中的主要内容包括了研究的两个部分，首先利用溶胶凝胶法制备得到了 Fe-TiO2-沸石 光催化剂，然后分析了其性能，接着利用其进行了甲醛气体的吸收分析，对其降解性 能做了检验。在此过程中主要是利用酚试剂分光光度法，确定出吸收前后吸光度的变 化情况，然后据此来定量确定出这种催化剂降解甲醛的效率。在分析其降解性能时， 主要是选择了甲醛的初始浓度，光照强度，焙烧温度等指标而进行讨论的，所得结果 表明：①成功制备了 Fe-TiO2-沸石光催化剂，②对甲醛的降解具显著效果；③焙烧温 度为 500℃、催化剂用量为 2g、降解时间为 2。0h 时对甲醛的降解性能最佳④与自然 光相比，在紫外灯的照射下对甲醛的降解速度更快。95168
毕业论文关键词： Fe-TiO2-沸石；光催化；甲醛
Abstract Nowadays, people's living level has been improved, the interior decoration has become a hot topic。 And decoration of the main pollution of formaldehyde has become the object of concern。 Formaldehyde is a typical indoor volatile organic pollutants, can cause leukemia and other human diseases。 In recent years, the removal of formaldehyde has become a hot research topic。 The main content of this paper includes two parts, one is the preparation of Fe-TiO2-zeolite photocatalyst by sol gel method, and the two is to study the absorption and degradation of formaldehyde gas by the catalyst。 Phenol reagent spectrophotometric method, the absorbance of the absorption liquid was measured before and after the absorption of the Fe-TiO2-zeolite catalyst to quantitatively express the efficiency of photocatalytic degradation of formaldehyde。 The degradation performance of Fe-TiO2- zeolite on formaldehyde gas was studied from five aspects: the initial concentration of formaldehyde, the light intensity, the amount of catalyst, the
degradation time and the calcination temperature。 Experimental results show that:①
were successfully prepared Fe-TiO2-zeolite photocatalysts, ② formaldehyde degradation with significant effect; ③calcining temperature of 500 ℃, the amount of catalyst 2g, degradation time is 2。0h for formaldehyde degradation performance best,
④and natural light compared, under the irradiation of ultraviolet lamp for formaldehyde degradation speed faster。
Keywords: Fe-TiO2-zeolite; photocatalysis; adsorption; formaldehyde
目 录
第一章 绪论 1
1。1 引言 1
1。2 甲醛的性质和危害 1
1。2。1 室内甲醛的来源 1
1。2。2 甲醛的去除方法 2
1。2。3 甲醛的检测方法 2
1。3 国内外研究进展 5
1。3。1 目前研究优缺点 6
1。3。2 研究趋势与展望 6
1。3。3 制备 TiO2 的方法 7
1。4 选题的目的和意义 9
第二章 实验部分 10
2。1 实验仪器和药品 10
2。1。1 实验仪器 Fe-TiO2-沸石光催化剂的制备及其对室内甲醛降解性能的研究:http://www.youerw.com/huaxue/lunwen_203417.html