Abstract：
Titanium dioxide (TiO2) based photocatalysts have been widely used as a photocatalyst for the degradation of various persistent organic compounds in water and air. The degradation mechanism involves the generation of highly reactive oxygen species, such as hydroxyl radicals, which react with organic compounds to break down their chemical bonds and ultimately mineralize them into harmless products. In the case of pharmaceutical and pesticide molecules, TiO2and modified TiO2photocatalysis effectively degrade a wide range of compounds, including antibiotics, pesticides, and herbicides. The main downside is the production of dangerous intermediate products, which are not frequently addressed in the literature that is currently available. The degradation rate of these compounds by TiO2photocatalysis depends on factors such as the chemical structure of the compounds, the concentration of the TiO2catalyst, the intensity, the light source, and the presence of other organic or inorganic species in the solution. The comprehension of the degradation mechanism is explored to gain insights into the intermediates. Additionally, the utilization of response surface methodology is addressed, offering a potential avenue for enhancing the scalability of the reactors. Overall, TiO2photocatalysis is a promising technology for the treatment of pharmaceutical and agrochemical wastewater, but further research is needed to optimize the process conditions and to understand the fate and toxicity of the degradation products.
摘要：
二氧化钛（TiO2）基光催化剂已被广泛用作降解水和空气中各种持久性有机化合物（POC）的光催化剂。降解机理涉及高活性氧的产生，如羟基自由基，它们与有机化合物反应，分解它们的化学键，最终将它们矿化成无害的产物。在药物和农药分子的情况下，TiO2和改性TiO2光催化能有效降解多种化合物,包括抗生素,杀虫剂,和除草剂。主要的缺点是生产危险的中间产品，这在目前可用的文献中并不经常提到。TiO2光催化对这些化合物的降解速率取决于化合物的化学结构等因素，TiO2催化剂的浓度，强度,光源，以及溶液中其他有机或无机物质的存在。探索降解机制的理解，以获得对中间体的见解。此外,解决了响应面方法(RSM)的利用，为增强反应堆的可扩展性提供了潜在的途径。总的来说,TiO2光催化是一种很有前途的制药和农药废水处理技术,但是需要进一步的研究来优化工艺条件并了解降解产物的命运和毒性。
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