铁氮共掺杂生物炭催化非均相电Fenton电极表界面反应的原位光谱电化学及同步辐射谱学研究

电Fenton技术广泛应用于废水中难降解有机污染物的氧化降解。在电Fenton过程中，污染物的降解主要发生在电极表面及电极和反应溶液的界面之间，因此，阐明电Fenton电极表界面反应过程和机制对于优化调控电Fenton体系以提高污染物降解效率具有重要指导意义。本项目拟采用铁氮共掺杂biochar作为阴极电催化剂，选择4-氯酚和硝基苯分别作为可电离和不可电离有机污染物的代表，构建非均相电Fenton体系。通过原位光谱电化学及同步辐射谱学技术对非均相电Fenton电极表界面反应过程和机制进行解析。将原位动态反应解析与反应机理探索有机结合，分析阴极催化剂的活性催化位点及其动态变化, 阐明非均相电Fenton电极表界面反应过程及其机制，在此基础上对催化剂合成及电Fenton体系进行调控，以期获得具有较高催化活性和稳定性的阴极电催化剂，同时最大程度地提高电Fenton降解各类有机污染物效率。

The electro-Fenton process has been extensively used in the oxidative degradation of the persistent organic pollutants. In a typical electro-Fenton process, the degration of the organic pollutants happens mainly on the surface of the electrodes or in the interface between the electrode and reaction solution. Therefore, it would be an important scientific direction for us to optimize and regulate the electro-Fenton prcess so as to improve the pollutant degradation efficiency, when the process and mechanism of the reactions on the electro-Fenton electrode surface and interface can be illuminated. In this project, we choose the Fe, N co-doped biochar as the cathodic catalyst, 4-chlorophenol and nitrobenzene as the representative ionizable and non-ionizable organic pollutants, respectively, to bulid a heterogeneous electro-Fenton system. we propose to use the in-situ spectroelectrochemistry and synchrotron spectroscopy to study the process the mechanism of the reaction on the electro-Fenton electrode surface and interface. Dynamic integration of the in-situ reaction analysis and mechanism probing methods to identify the reactive catalytic sites and analyze their changes during the electro-Fenton process, so as to illuminate the process and mechanism of the reactions on the electro-Fenton electrode surface and interface. Based on these results, we can optimize and regulate the catalyst synthesis and electro-Fenton prcesses, so as to obtain the cathodic catalysts with high catalytic activity and stability, and maximize degradation efficiencies of various organic pollutants during the electro-Fenton process.