BiPO4基光催化剂降解化学毒剂模拟剂及其机理研究

Due to the risk and poison of chemical weapons, the thorough, universal and environmental decontamination of chemical warfare agents is a main problem needed to resolve. Photocatalysis has an important prospect in degradation of environmental pollutants and development of clean energy, the degradation of chemical warfare agents on the traditional TiO2 and ZnO photocatalysts existed many shortcomings such as low efficiency, deactivation of photocatalyst poisoning and easy light corrosion. This project will use high active oxy-acid salt BiPO4-based photocatalysts to degrade chemical warfare agent simulants DMMP and 2-CEES. BiPO4 nano-photocatalyst via reflux at normal pressure was used as precursor, the enhancement of photocatalytic activity and expansion of absorption range on BiPO4 will be adopted by doping of non-metal elements or compound of semiconductor materials. In order to research the influencing factor of photocatalytic degradation effects on the chemical warfare agent simulants, the pH value, H2O2 content and photocatalyst amount will be adjusted to optimize degradation conditions. The intermediate and ultimate mineralization products of chemical warfare agents, component property of reaction before and after photocatalysts will be evaluated by many methods of analytical testing and characterization, the mechanism of degradation of chemical warfare agent simulants on the BiPO4-based photocatalyst will be inferred. This project will provide a good technological base for decontamination of chemical warfare agents and retarted the deactivation of photocatalyst poisoning.

由于化学武器的危险性和毒害性，针对化学毒剂彻底、广谱和环保性降解消除是急需解决的问题。光催化在环境污染物降解和清洁能源开发等方面具有重要前景，传统TiO2、ZnO等光催化剂降解化学毒剂及其模拟剂存在效率低、催化剂中毒失活和易发生光腐蚀等不足。本项目用高活性非金属含氧酸盐BiPO4基光催化剂，进行化学毒剂模拟剂DMMP、2-CEES的光催化降解效果和机理研究。以回流制备的纳米BiPO4光催化剂为前驱体，通过非金属掺杂或半导体复合提高光催化活性和拓展光谱吸收范围。调控pH值、H2O2含量、催化剂用量优化降解条件，研究化学毒剂模拟剂光催化降解效果的影响因素。采用多种分析测试和表征方法对化学毒剂模拟剂降解的中间产物、最终矿化产物和反应前后催化剂的组分性能进行评价，推断BiPO4基光催化剂降解化学毒剂的机理。本项目为化学毒剂的光催化降解消除、减缓催化剂中毒失活提供良好的技术基础。

近年来，全世界面临的核生化威胁日趋严重。由于化学武器的危险性和毒害性，针对化学毒剂彻底、广谱和环保性降解消除是急需解决的问题。光催化在环境污染物降解和清洁能源开发等方面具有重要前景，本项目用高活性非金属含氧酸盐BiPO4基光催化剂，进行化学毒剂模拟剂2-PECES的光催化降解效果和机理研究。以回流制备的纳米BiPO4光催化剂为基础，通过非金属F、S掺杂提高光催化活性。反应过程中调控催化剂用量、pH值、H2O2含量优化降解条件，研究化学毒剂模拟剂光催化降解效果的影响因素。采用多种分析测试和表征方法对化学毒剂模拟剂降解产物和反应后催化剂表面产物进行分析评价，推断BiPO4基光催化剂降解化学毒剂的机理。本项目为光催化技术在化学毒剂降解消除使用应用提供了基础数据支持。