吸附-光催化协同体系的研究及其在悬浮型反应器中的应用

This project aims at the problems of anti-photolysis and light shielding in cleaning dyeing wastewater by using photocatalytic degradation. The following scientific problems will be mainly considered. (1) The adsorbents could enrich the dye molecules and avoid the poisoning effect, resulting in the promotion of the photocatalytic efficiency. (2) In order to overcome the shielding effect from colored dye-wastewater on the photocatalyst, synergetic adsorption-photocatalysis system applied in suspended photocatalysis reactor will be designed. (3) The cooperative adsorption-photocatalysis mechanism, efficiency-structure dependence and the photosensitizing effects of dye molecules or poisoning on the photocatalysts will be explored based on detailed characterizations and kinetic studies. In summary, we hope to get new development in designing new materials and photocatalysis reactors as well as in fundamentally understanding of photocatalysis theory. Furthermore, we hope to supply high efficiency photocatalysts and the relative technologies as well as reaction conditions for the practical applications of photocatalysis in cleaning real wastewater.

染料废水是水污染的重要源头之一，本项目针对有机染料废水不易光解、光屏蔽等急需解决的问题，采用吸附-光催化薄膜协同体系并设计悬浮型光催化反应器应用于降解染料污染物以开展相关理论研究，着重解决如下科学问题：(1) 通过设计吸附-光催化协同复合系统，富集染料分子，提高光降解效率；(2) 通过空心玻璃球表面负载吸附-光催化复合薄膜并用于悬浮型反应器以克服染料废水色度对光催化剂光吸收的屏蔽效应，提高光的利用率；(3) 通过系统表征和动力学研究，阐述吸附-光催化协同机理、构效关系以及染料污染物的敏化和催化剂失活机理。期望在新材料和反应器设计以及光催化理论研究方面有所创新，并为工业废水的高效低耗净化提供新型材料和相关工艺。

本项目采用光催化降解染料污染物，净化染料工业废水，通过复合型光催化剂和光催化反应器的设计并进行相关理论研究，着重解决了下列科学问题：(1) 通过设计修饰型TiO2及非TiO2的新型光催化薄膜以及含吸附功能的悬浮状光催化剂，克服染料废水色度对光照射光催化剂的屏蔽效应；(2) 通过光催化与膜分离等技术相结合高效降解有色染料污染物，提高光催化效率，实现污染物的完全净化； (3) 通过设计含长余辉发光剂的复合光催化剂及光催化反应器，储存白天过剩的太阳光，实现全天候光催化反应； (4) 通过系统表征和动力学研究，阐述协同光催化反应机理，构效关系等机制。期望在新材料和反应器设计以及光催化理论研究方面有所创新，并为工业染料废水的净化提供具有自主知识产权的高效光催化体系、光催化反应器以及相关工艺及条件。