芳香硝基化合物电化学还原捕获CO2的机理探索及其产物调控研究

芳香硝基化合物作为合成精细化工产品的重要中间体，由于其高毒性、难降解、危害大，已被列为优先监测物。CO2排放量的与日俱增，导致了全球变暖和气候异常，同样对环境有危害作用。因此，开发一种有效方法同时实现其价值转化具有十分重大的意义。本项目拟在反应介质中引入CO2，利用芳香硝基化合物电还原捕获CO2发生亲核反应羧化，促使其电还原降解的同时实现CO2的电化学转化。基于前期建立的快速扫描红外光谱电化学循环伏吸（CVA）及导数循环伏吸法（DCVA），拓展双电位阶跃时间分辨红外光谱扫描电化学技术（DPS TR IRSEC），开展芳香硝基化合物电还原捕获CO2的机理研究。考察电极材料、反应介质、温度以及电极电势，对芳香族硝基苯电化学还原，以及同时捕获CO2的影响，探索其反应历程变化的一般规律。项目的开展为实现芳香硝基化合物电还原降解产物的调控及CO2捕获，提供理论依据与技术支持。

Aromatic nitro compounds, as important intermediates for the synthesis of fine chemical products, have been listed as a type of priority pollutants due to their high toxicity, difficulty in degradation and great harm. Excessive CO2 emissions contribute to the global warming and climate change, which are also harmful to the environment. Therefore, it is of great significance to develop an effective method to convert aromatic nitro compounds and CO2 into valuable products simultaneously. This project intends to introduce CO2 into the reaction medium, capture it by electrochemical reduction of aromatic nitro compounds and produce nucleophilic reaction and carboxylation, which can achieve the electrochemical reduction degradation of aromatic nitro compounds and the electrochemical transformation of CO2 simultaneously. Based on the rapid scanning infrared spectroelectrochemistry cyclic voltammetry (CVA) and Derivative Cyclic voltammetry (DCVA) established earlier, the double potential step time-resolved infrared spectroelectrochemistry (DPS TR IRSEC) will be extended to study the mechanism of electroreduction with which aromatic nitro compounds capture CO2. Electrode materials, reaction mediums, temperature and electrode potential will be investigated to identify their effects on the electrochemical reduction of aromatic nitrobenzene and the simultaneous capture of CO2. The development of this project will provide theoretical basis and technical support for the control of the electrochemical degradation products of aromatic nitro compounds and the capture of CO2.