Abstract：
Electrochemical methods are increasingly favored for remediating polluted environments due to their environmental compatibility and reagent-saving features. However, a comprehensive understanding of recent progress, mechanisms, and trends in these methods is currently lacking. Web of Science (WoS) databases were utilized for searching the primary data to understand the knowledge structure and research trends of publications on electrochemical methods and to unveil certain hotspots and future trends of electrochemical methods research. The original data were sampled from 9080 publications in those databases with the search deadline of June 1st, 2022. CiteSpace and VOSviewer software facilitated data visualization and analysis of document quantities, source journals, institutions, authors, and keywords. We discussed principles, influencing factors, and progress related to seven major electrochemical methods. Notably, publications on this subject have experienced significant growth since 2007. The most frequently-investigated areas in electrochemical methods included novel materials development, heavy metal remediation, organic pollutant degradation, and removal mechanism identification. \"Advanced oxidation process\" and \"Nanocomposite\" are currently trending topics. The major remediation mechanisms are adsorption, oxidation, and reduction. The efficiency of electrochemical systems is influenced by material properties, system configuration, electron transfer efficiency, and power density. Electro-Fenton exhibits significant advantages in achieving synergistic effects of anodic oxidation and electro-adsorption among the seven techniques. Future research should prioritize the improvement of electron transfer efficiency, the optimization of electrode materials, the exploration of emerging technology coupling, and the reduction in system operation and maintenance costs.
摘要：
电化学方法由于其环境相容性和节省试剂的特征而越来越有利于修复污染环境。然而,全面了解最新进展，机制,目前缺乏这些方法的趋势。利用WebofScience（WoS）数据库搜索主要数据，以了解电化学方法出版物的知识结构和研究趋势，并揭示电化学方法研究的某些热点和未来趋势。原始数据是从这些数据库中的9080种出版物中抽取的，搜索截止日期为6月1日，2022年。CiteSpace和VOSviewer软件促进了数据可视化和文档数量分析，来源期刊,机构,作者,和关键词。我们讨论了原则，影响因素，与七种主要电化学方法有关的进展。值得注意的是,自2007年以来，关于这一主题的出版物经历了显著增长。电化学方法中研究最频繁的领域包括新型材料的开发，重金属修复，有机污染物降解，和去除机制识别。“高级氧化工艺”和“纳米复合材料”是当前的热门话题。主要的修复机制是吸附，氧化，和减少。电化学系统的效率受材料特性的影响，系统配置,电子转移效率，和功率密度。在七种技术中，电Fenton在实现阳极氧化和电吸附的协同作用方面具有显着的优势。未来的研究应优先提高电子转移效率，电极材料的优化，新兴技术耦合的探索，以及系统运行和维护成本的降低。
