Development of Adsorption-photodegradation

被称为内分泌干扰剂的化学物质已经扩散到环境中，以影响地球上某些物种的生殖功能，因此，需要对这一问题采取快速行动。本研究的目的是找出水中稀释型内分泌干扰物的吸附-光降解体系的基本方面，并开发该体系。第一年，在建立了一种简单的体系活性估算方法后，我们研究了两个体系对邻苯二甲酸二丁酯(DBF)的降解。一种体系是二氧化钛柱撑粘土催化剂，另一种是二氧化硅负载二氧化钛催化剂。对催化剂的表征和吸附-光降解活性的研究结果表明：(1)吸附量对光降解速率有影响；(2)二氧化钛颗粒的大小和结晶度影响光降解活性；(3)水热处理提高了二氧化钛的结晶度。(4)我们的制度在阳光下运作。此外，在第二年，我们研究了内分泌干扰物的亲水性/疏水性对体系性能的影响，发现水热处理提高了二氧化钛的结晶度，对我们检测的每一种内分泌干扰物都有效。

The chemicals called endocrine disrupters have been spread over the environment to influence the generative function of some species of living thing on the earth, and, therefore, the quick actions for this matter are required. The aim of this research is to find out the fundamental aspects on the adsorption-photodegradation system for diluted endocrine disrupters in water, and then to develop the system. In the first year, after establishing a simple estimation method for the activity of the system, we studied two systems for the degradation of dibutyl phthalate (DBF). One system was titania-pillared clay catalysts, and another was silica-supported titania catalysts. The results on the characterization of the catalysts and the activity for adsorption-photo-degradation clarified some aspects, e.g., (I) the adsorption amount influences on the photodegradation rate, (ii) the size and the crystallinity of the titania particle influence these activities, (iii) the hydrothermal treatment enhances the crystallinity of titania. (iv) our systems work under sunshine. In addition to them, in the second year, we investigated the influence of hydrophilicity/hydrophobicity of endocrine disrupters on the performance of the systems, and found that the enhanced crystallinity of titania by hydrothermal treatment were effective for each endocrine disruptors we examined.