铁电体材料增强等离子体协同催化去除挥发性有机物的基础研究

项目名称： 铁电体材料增强等离子体协同催化去除挥发性有机物的基础研究

项目编号： No.21307003

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 环境科学、安全科学

项目作者： 梁文俊

作者单位： 北京工业大学

项目金额： 25万元

中文摘要： 利用铁电体材料在电场条件下可发生自发极化从而增强电场的特性，课题将其置于等离子体-催化体系中，研究该材料对增强体系紫外光强度、促进TiO2光催化作用发挥、提高污染物去除率、降低能耗方面的性能。研究内容包括：①铁电体及光催化混合材料制备与负载，考察其在等离子体场中的特性，确定最佳性能材料；②等离子体增强光催化降解苯系物，探讨不同因素对苯系物去除率的影响，确定污染物降解的最佳工艺条件；③研究反应体系中紫外光强及光谱分布规律，实现对其的有效利用；④反应动力学机理研究，通过对反应产物的测定，建立反应模型，进行动力学模拟，确定反应动力学机理。课题创新之处在于将铁电体材料置于等离子体-催化体系中，利用等离子体协同催化技术开展污染物降解研究，并建立化学反应动力学机理，为该技术的工业化应用提供理论和技术基础。

中文关键词： 等离子体-催化；挥发性有机物；去除率；紫外光；铁电体材料

英文摘要： Based on the characteristics of ferroelectric materials with spontaneous polarization to enhance the electric field intensity, ferroelectric materials were put into the plasma-catalytic system in order to study the performance of increasing UV light intensity, exerting TiO2 photocatalysis, increasing removal efficiency and decreasing energy consumption. Research contents including: ① To prepare and load ferroelectrics and photocatalytic hybrid materials, examine its characteristics in the plasma field and determine the optimal ratio; ② To study the removal of benzene with spontaneous polarization plasma enhanced photocatalytic, explore different factors affected the removal of benzene and determine the optimum conditions of degradation of pollutants; ③ To consider the UV light intensity and spectral distribution; ④ To study the reaction mechanisms. The innovation of the study is that the ferroelectric material being placed in the plasma-photocatalytic system for the degradation of pollutants. UV light intensity can be enhanced effectively, which leads to increase the pollutants removal efficiency. Chemical kinetic mechanism is established for industrial application.

英文关键词： plasma-catalysis；VOCs；removal efficiency；UV light；ferroelectric materials