二氧化钛光催化制药废水氧化钛光催化制药废水.docVIP

二氧化钛光催化废水处理 半导体多相光催化二氧化钛已经被证明是一有前途的水净化处理技术。它主要用于中低浓度废水处理，光催化材料是一种半导体材料，它具有光催化活性，能在紫外光甚至可见光照射下降解各类化学物质或杀灭细菌，例如纳米TiO2在光照射下产生强烈的氧化能力，可以把许多难分解的有毒有机污染物氧化分解为二氧化碳、水等无机物，并且反应条件温和，能耗不高，在太阳光下即可发生光催化反应，反应速度快，降解没有选择性，最可贵的是无二次污染。使得纳米二氧化钛在废水处理、大气净化、城市垃圾处理以及除臭杀菌等环保领域得到了广泛研究和应用。最优操作条件和降解途径随不同的主要药物产生的效果也不一样。本文主要讨论的是二氧化钛在各个领域的不同应用，给人类带来的各种好处，同时探讨纳米二氧化钛的光催化研究进展及制备纳米二氧化钛的不同方法。 关键词: 光催化降解；二氧化钛；废水处理 Titanium dioxide photocatalytic wastewater treatment Semiconductor heterogeneous photocatalytic titanium dioxide has proven to be a promising water purification treatment technology.It is mainly used for low concentration wastewater treatment, photocatalytic material is a kind of semiconductor material, it has the photocatalytic activity, can in the ultraviolet and visible light irradiation in all kinds of chemical substances and kill bacteria, such as nanometer TiO2 under light irradiation produces strong oxidation ability, can take many difficult decomposition of toxic organic pollutants are decomposed into carbon dioxide, water and other inorganic oxide, and mild reaction conditions, low energy consumption, can occur in the sun light catalytic reaction, reaction speed, no selective degradation, the most precious of all is that no secondary pollution.Makes the nano titanium dioxide in wastewater treatment, air purification, city garbage disposal and deodorization sterilization has been widely used in research and environmental protection field.The optimal operation conditions and the degradation pathway with different mainly the effect of the drug is different also.Titanium dioxide are discussed in this paper, the application in various fields all kinds of benefits to mankind, at the same time discusses the research progress of nanometer titanium dioxide photocatalysis and preparation of nanometer titanium dioxide different methods. Key words: photocatalytic degradation; Titanium dioxide; Wastewater treatment 介