基于粉煤灰制备漂浮型可见光催化剂的结构调控及除藻机理研究

It has currently become the major environmental issues that how to effectively control the harmful algal bloom and strengthen the solid waste utilization as resources. This project is aimed at the existence problem in photocatalytic technology with the features of cost effectively and environmental friendly for the removal of algae, such as the photocatalysts recovery difficulties, low photocatalytic efficiency and easy deactivation. By making use of the advantages of solid waste fly ash (floating, good adsorption performance, etc.) and using as the carrier, the preparation technology and principle of floating photocatalyst based on fly ash with visible light response will be studied. The floating photocatalyst will be applied to the treatment of algae, and its photocatalytic degradation performance will be investigated. The research focus on the preparation method of the photocatalyst stably loaded on the fly ash, in-depth study of the regulation mechanism of composite microstructure, interpretation of the relationship between the structure and morphology with floating ability and light catalytic performance. General laws and factors affecting the removal of algae by photocatalytic methods will be studied. The above research will provide theoretical basis and technical support for the preparation and application of floating photocatalyst for the removal of algae and the utilization of solid waste.

如何有效防治有害藻类水华和加强固体废弃物资源化利用，已成为当前面临的重大环境问题。本项目针对以节能环保和高效简便为特征的光催化技术应用于除藻过程中存在的光催化剂易失活、效率低及难回收的问题，以固体废弃物粉煤灰为载体，充分利用粉煤灰的漂浮特性、结构上的优点及良好的吸附性能，研究制备多功能的“粉煤灰基漂浮型可见光催化剂”的技术和原理，并将该材料应用于有害藻类的去除，考察其光催化抑藻性能及机理。重点探索能保持光催化剂在粉煤灰上稳定负载的制备方法，深入研究复合材料微观结构的调控机制，阐释催化剂结构形貌调控对其漂浮能力及光催化性能的影响规律，弄清漂浮型光催化剂除藻的影响因素及机理。以上研究将为漂浮型光催化剂的制备和抑藻应用以及固体废弃物资源化利用提供理论依据和技术支持。

如何有效防治有害藻类水华和加强固体废弃物资源化利用，已成为当前面临的重大环境问题。本项目针对以节能环保和高效简便为特征的光催化技术应用于除藻过程中存在的光催化剂易失活、效率低及难回收的问题，以固体废弃物粉煤灰、膨胀珍珠岩、石墨烯气凝胶、丝瓜瓤、陶粒等为载体，充分利用其漂浮特性、结构上的优点及良好的吸附性能，研究了制备多功能的“漂浮型可见光催化剂”的技术和原理，并将该材料应用于有害藻类的去除，考察了其光催化抑藻性能及机理。重点探索能保持光催化剂在载体上稳定负载的制备方法，深入研究了复合材料微观结构的调控机制，阐释催化剂结构形貌调控对其漂浮能力及光催化性能的影响规律，弄清漂浮型光催化剂除藻的影响因素及机理。以上研究将为漂浮型光催化剂的制备和抑藻应用以及固体废弃物资源化利用提供理论依据和技术支持。项目执行过程中已发表SCI论文5篇，授权中国发明专利3项，澳大利亚革新专利1项。获中国产学研合作创新奖1项、江西省科技进步一等奖1项，江西省自然科学三等奖1项。项目负责人入选了江西省青年井冈学者及江西省政府特殊津贴人选。