固体超强酸光催化剂的制备及其光催化降解性能的(完稿)探析.doc

东北石油大学本科生毕业设计（论文） PAGE  PAGE 25 东北石油大学本科生毕业设计（论文） 摘 要 纳米二氧化钛具有价格低廉无污染，较高的光催化活性等优点，近年来得到广泛的研究。由于它的量子效率低、太阳能的利用率低，限制了它的广泛应用。因此，本实验对其进行超强酸改性，以提高它的光催化量子效率。 本文采用购买的商品化TiO2粉末（p25）为基体光催化材料，以超强酸SO42-加以改性。即以每克P25加入到不同浓度的H2SO4中配置乳浊液，把乳浊液放在不同瓦数的微波水热条件下反应一定时间，再将其烘干并研磨得到SO42-/ TiO2催化剂。 实验中以甲基橙为模拟废水降解物进行光催化降解实验，对影响甲基橙光催化降解的因素进行了讨论，如微波的瓦数、H2SO4的量、制备固体催化剂的方法等。结果表明：光催化剂对甲基橙有一定的吸附性能；在一定条件下，微波瓦数对催化的性能有明显影响；对于微波制备的催化剂和传统浸渍所制备的催化剂，微波条件的比较好，除此之外，H2SO4的浓度对催化剂的光催化性能也有一定影响。 关键词：二氧化钛；改性；固体超强酸；甲基橙；光催化降解  ABSTRACT Nano-titanium dioxide is low-cost, non-pollution, high photocatalytic activity, etc., and has been widely studied in recent years. Because of low quantum efficiency and low utilization of solar energy, its wide application is limited. Therefore, the modification is carried out, in order to improve photocatalytic quantum efficiency and solar energy utilization. Based on the purchase of the commercial TiO2 (p25) as the matrix powder photocatalytic materials, modification of superacid SO42-. As per gram of p25 H2SO4 into different concentration of configuration in the emulsion, the emulsion in different wattage microwave hydrothermal reaction under the condition of a certain time, drying and grinding the SO42- / TiO2 catalysts. Experiment used for photocatalytic degradation of methyl orange as simulated wastewater degradation experiment, the factors affecting the photocatalytic degradation of methyl orange were discussed, such as microwave wattage、H2SO4 concentration、the preparation of solid catalysts, etc. The results show that Photocatalyst has certain adsorption performance of methyl orange; under certain condition, microwave wattage have obvious influence on the performance of the catalyst. Microwave preparation of catalyst is better than traditional impregnation method effect. In addition to, H2SO4 concentration has some influence the photocatalytic performance of the catalysts. 目 录  TOC \o 1-2 \h \z \u  HYPERLINK \l _Toc359397070 第1章 概述  PAGEREF _Toc359397070 \h 1