双助催化剂协同修饰BiOI体系构建及其可见光催化抑制农作物真菌生长研究

Photocatalytic materials modifying by co-catalyst is an effective method to improve the separation efficiency of photo-generated charge carriers. But at present, this means used in the bismuth oxyiodide (BiOI) photocatalytic system application is few. Based on this, we will study the negative causes of co-catalyst modification pseudo BiOI firstly, namely the result and type selectivity of co-catalyst to enhance the visible light photocatalytic properties of BiOI. Then, suitable deriving-electron-types and deriving-hole-types co-catalysts were chosen to construct double co-catalysts synergetic modified BiOI system. Finally, the double co-catalysts synergetic modified BiOI was used photocatalytic inhibition of crops fungus growth under visible light, and study the photocatalytic mechanism detailedly. The success of this project will provide the theoretical support for ecological control of crop diseases, and expand the application of BiOX photocatalyst in the biological field.

助催化剂修饰是提高光催化材料光生载流子分离效率的有效手段。但是目前，该手段在碘氧化铋（BiOI）光催化体系上应用极少。基于此，本项目拟首先研究助催化剂修饰BiOI不力的原因，即助催化剂增强BiOI可见光催化性能的功效选择性、类型选择性。然后，选择合适的导电子和导空穴助催化剂，构建高效的双助催化剂协同修饰BiOI体系。最后，将双助催化剂协同修饰BiOI光催化剂用于可见光催化抑制农作物真菌生长，详细研究其光催化抑制真菌生长的机理。本项目的成功将为生态防治农作物病害提供理论支持，扩大卤氧化铋光催化剂在生物领域方面的应用。

助催化剂修饰是提高光催化材料光生载流子分离效率的有效手段。但是目前，该手段并在BiOI光催化体系上应用极少。基于此，本项目首先搞清楚助催化剂修饰BiOI不利的原因，即助催化剂增强BiOI可见光催化性能的功效选择性、类型选择性。然后，选择合适的导电子和导空穴助催化剂，构建高效的双助催化剂协同修饰BiOI体系。最后，将双助催化剂协同修饰BiOI光催化剂用于可见光催化抑制细菌和真菌生长，详细研究其光催化抑制生长的机理。本项目的成功将为水处理及生态防治农作物病害提供理论支持，扩大卤氧化铋光催化剂在生物领域方面的应用。