Adsorption behavior and photocdegradation mechanism on endocrine disrupters in the TiO_2 photocataritic degradation

农药、除草剂、增塑剂、合成洗涤剂原料等内分泌干扰物对动物生态系统造成了严重的危害。这些材料中的大多数不溶于水，它们是疏水的或树脂可溶的。本研究对这些有毒物质在TiO2光催化体系中的降解机理和光降解速率进行了研究。紫外光照射下的时间吸附证据的直接测量是如此复杂，以至于动态吸附行为尚未被揭示。二氧化钛表面的吸附反应是影响光催化剂初始降解的关键因素。将二氧化钛固定在石英晶体微天平(QCM)的表面来检测压电效应，并将其作为测量二氧化钛表面反应的传感器。紫外光照射后吸附在二氧化钛薄膜表面的衬底被…转移到体溶液中更多的光降解ESS。此外，中间产物在二氧化钛薄壁表面上被重新吸附。因此，制备高活性的二氧化钛薄膜是本研究的一个重要关键。通过实验数据和计算机计算(点电荷和前沿电子密度)比较了羟基自由基对双酚A化学结构的攻击位置。此外，还计算了分解的底物在催化剂表面的吸附行为的部分电荷。负电荷意味着与真空或空气中的理论计算以及水中的计算有很大的不同。而且，加电荷得到的值较小。将实际实验值与理论计算值进行了比较，并从分子化学结构上推测了拆分机理。并详细考察了含氟难降解材料和三聚氰酸在TiO2光催化体系中的实验条件。较少

The endocrine disrupters such as agricultural chemicals, herbicides, plasticizers, and raw material of synthetic detergent have caused the serious problems for the ecosystem of animals. Most of these materials do not dissolve in water, and they are hydrophobic or resin-soluble. In this research, the degradation mechanism and photodegradation rate on the chemical structure of these toxic materials was investigated in TiO_2 photocatalytic system. The direct measure of temporal adsorption evidence under UV irradiation is so complicated that the dynamic adsorption behaviours have not been revealed. The adsorption reaction on the TiO_2 surface is a critical factor for the initial photocatalyst degradation. TiO_2 was fixed on the surface of the quartz crystal microbalance (QCM) to examine piezo the effect, and it was used as a sensor that measured the TiO_2 surface reaction. The adsorbed substrate on the TiO_2 thin film surface by the UV irradiation is moved to the bulk solution by the progr … More esses of photodegradation. Moreover, the intermediates are reabsorbed on the TiO_2 thin file surface. Therefore, the make of the high active TiO_2 thin film is an important key in this research.The attack position of OH radicals to the chemical structure of bisphenol A was the compared between the experimental data and the computer calculation (point charge and frontier electron density). Moreover, partial charge of the ad sorption behavior of the resolved substrate was calculated to the surface of the catalyst. A minus charge implies a big difference from the theoretical calculation in the vacuum or air and the calculation in water. Moreover, the plus charge obtains a smaller value. An actual experiment value was compared with these theoretical calculations, and the resolution mechanism was inferred from a molecular chemical structure. The experiment factors of a non-degradative material as flourine-containing material and cyanuric acid by the TiO_2 photocatalytic system were also inspected in detail. Less