BiOCl/Bi12O17Cl2@AgCl异质结的构建及可见光催化净化室内空气污染物的研究

Visible light photocatalysis has exerted tremendous potential in the field of environment purification. To date, the present applicants have discovered the high photocatalytic performance of BiOCl/Bi12O17Cl2 and BiOCl/Bi12O17Cl2@AgCl heterojunctions, and based on this discovering, the current research focused on optimizing the conditions (ratios of precursors, the reaction temperature and time, pH) aiming at obtaining more efficient BiOCl/Bi12O17Cl2 and BiOCl/Bi12O17Cl2@AgCl photocatalysts. Modern techniques were utilized to characterize the as-obtained photocatalysts to explore the relationship between the in-situ construction process conditions and materials microstructure so as to fine-tune the microstructures and electronic structure of the photocatalysts. The dynamic analysis of transformations of structure and morphology of samples under certain fabrication conditions was taken, aiming at elaborating the material generation process and the in-situ fabrication mechanism of BiOCl/Bi12O17Cl2 and BiOCl/Bi12O17Cl2@AgCl photocatalysts, which can provide theoretical instructions for controllable preparation and in situ doping modification of organic photocatalytic materials. DFT theoretical calculations and characterization testing results were combined to determine the mechanism of enhancing the photocatalytic performance of BiOCl/Bi12O17Cl2 and BiOCl/Bi12O17Cl2@AgCl photocatalysts, which can help to propose bandgap structure models of the photocatalysts. According to the photocatalytic removal capability of the photocatalysis materials for typical environmental pollutants purification, the relationship between the material microstructure and visible-light photocatalytic properties was built, which will provide technical support for environmental purification applications.

可见光催化技术在环境净化领域表现出了巨大的应用前景。申请者在前期探索中发现了BiOCl/Bi12O17Cl2和BiOCl/Bi12O17Cl2@AgCl可见光催化材料，本申请拟在该基础上，针对该材料的可控制备和环境净化应用，系统优化工艺条件（前驱体配比、反应时间、反应温度、溶剂pH值），采用现代表征分析技术研究材料的结构特征，建立工艺条件和材料微观结构之间的关系，有效的优化微形貌结构和电子结构。动态分析典型工艺条件下样品的微观结构和变化规律，阐明材料的生长机理和原位构建机理，为光催化材料的可控制备和原位改性奠定理论基础。结合DFT理论计算和表征测试方法，确定原位构建异质节增强可见光催化性能的作用机理，提出原位构建异质节的禁带结构模型。根据材料净化典型环境污染物的性能，构建材料微观结构－可见光催化性能的关系，为其走向环境净化应用提供技术支撑。

可见光催化技术在环境净化领域表现出了巨大的应用前景。申请者研究了非整比卤氧化铋基可见光催化材料，针对材料的可控制备和环境净化应用，系统优化工艺条件，采用现代表征分析技术研究材料的结构特征，建立工艺条件和材料微观结构之间的关系，有效的优化微形貌结构和电子结构。动态分析典型工艺条件下样品的微观结构和变化规律，阐明材料的生长机理和原位构建机理，为光催化材料的可控制备和原位改性奠定理论基础。结合理论计算和表征测试方法，确定原位构建异质节增强可见光催化性能的作用机理，提出原位构建异质节的禁带结构模型。根据材料净化典型环境污染物的性能，构建材料微观结构－可见光催化性能的关系，为其走向环境净化应用提供技术支撑。