文献类型：期刊文献

英文题名：Construction and Application of a Novel Three-Dimensional Electrocatalytic Ozonation System for Micropollutant Removal

作者：Zhang, Yang Zhang, Xian Wang, Shiyi Huang, Jiafeng Zhang, Yuxiao Guo, Yang Wang, Chunrong Yu, Tao

第一作者：Zhang, Yang

通信作者：Wang, CR[1];Yu, T[2]

机构：[1]China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China;[2]Inner Mongolia Univ Technol, Res Inst Reg Situat Studies, Hohhot 010051, Peoples R China;[3]Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China;[4]Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang 550025, Peoples R China

第一机构：China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

通信机构：corresponding author), China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang 550025, Peoples R China.|贵州理工学院资源与环境工程学院;贵州理工学院;

年份：2025

卷号：15

期号：11

外文期刊名：CATALYSTS

收录：;EI(收录号：20254819607543);Scopus(收录号：2-s2.0-105022977843);WOS:【SCI-EXPANDED(收录号:WOS:001623603700001)】；

基金：This research was financially supported by the Guizhou Institute of Technology high level talents research start-up funding (grant number XJGC20190964), the National Natural Science Foundation of China (grant number 52160007) and the Fundamental Research Program of Shanxi Province (grant number 202303021212012).

语种：英文

外文关键词：three-dimensional electrocatalytic ozonation; stainless-steel cathode; ozone mass transfer; micropollutant degradation; hydroxyl radicals

摘要：Conventional two-dimensional (2D) electrocatalytic ozonation faces challenges such as low mass transfer efficiency, limited hydroxyl radical (center dot OH) yield, and insufficient pollutant degradation rates. To address these limitations, this study developed a novel three-dimensional electrocatalytic ozonation system using a 316 stainless-steel skeleton as the cathode. By systematically comparing the ozone decay kinetics, center dot OH yield, imidacloprid degradation efficiency, and ozone mass transfer characteristics among the 3D electrocatalytic ozonation system, 2D electrocatalytic ozonation system, and conventional ozonation system, combined with electrode interface reaction analysis and structural simulation, the core mechanism by which the 3D structure enhances the electrocatalytic ozonation reaction was revealed. The results showed that the 3D electrocatalytic ozonation technology primarily promotes ozone decay and center dot OH generation through a reaction pathway dominated by the reduction of ozone at the cathode, while simultaneously enhancing pollutant removal efficiency. The pseudo-first-order kinetic constant for ozone decay in the 3D system reached 1.0 min-1, which was five times that of the 2D system (0.2 min-1). The center dot OH yield increased to 38%, significantly higher than that of the 2D system (15%) and conventional ozonation (10%). The complete degradation of imidacloprid was achieved within 5 min, and the degradation rate (2.14 min-1) was 10 times that of the 2D system. The high specific surface area (75 cm2/g, 30-90 times that of the 2D flat electrode) and 70% porosity of the 3D framework overcame the mass transfer limitation of the 2D structure, exhibiting excellent reaction activity. The ozone mass transfer amount was approximately 1.5 times that of the 2D electrode and 2 times that of conventional ozonation. This study provides theoretical support and technical basis for the engineering application of 3D electrocatalytic ozonation technology in the field of micro-pollutant control.