全氟辛酸(PFOA) 所造成的全球性污染正日渐成为人体健康和环境安全的潜在危险，而传统化学和生物法难以有效处理PFOA，本项目针对这一问题开展PFOA的吸附富集-光电催化降解耦合处理新方法研究。以泡沫钛为基底制备具有光电催化功能的TiO2-x纳米晶修饰的三维B、N共掺杂石墨烯电极，研究其吸附及光电催化性能，实现单一系统中PFOA的电增强吸附富集、光电催化降解的有效结合。利用偏振红外光谱、电化学原位拉曼光谱等谱学技术，从分子层面原位研究PFOA在三维Ti/B-N-Gr/TiO2-x电极表面的吸附及催化降解微观过程，获取分子水平信息，揭示表面/界面调控的微观因素。利用时间分辨电子自旋共振、UPLC-MS、离子色谱、TOC分析光电催化反应过程中产生的活性自由基浓度及种类、中间产物、F-离子产生量、反应物的矿化率，揭示PFOA的光电催化降解机理，为发展PFOA富集-降解处理技术提供理论支持。

The global pollution of PFOA has gradually become a potential risk for human health and environmental security, but the traditional chemical and biological methods show low efficiency in treatment of PFOA. In this project, the development of new adsorption-photoelectrocatalytic degradation method was carried out for handling PFOA treatment. By using titanium foam as substrate, TiO2-x nanocrystal modified B-N-Gr photoelectrode was fabricated and used in treatment of PFOA by combination of electro-enhanced adsorption and photoelectrocatalytic degradation in a single system. The in-situ polarized FTIR, electrochemical in-situ Raman spectroscopy were used for detecting the information of PFOA molecule that adsorbing and decomposing on the electrode surface. The time-resolution ESR, UPLC-MS, ion chromatography and TOC were used to detect the concentration and category of the reactive radicals, the intermediate and final materials, the concentration of F-, and the mineralization of PFOA for confirming the degradation mechanism of PFOA, and finally, provided a theoretical support for the development of adsorption-photoelectrocatalytic PFOA treatment technology.