Abstract：
Hydrogen peroxide (H2O2) stands as one of the foremost utilized oxidizing agents in modern times. The established method for its production involves the intricate and costly anthraquinone process. However, a promising alternative pathway is the electrochemical hydrogen peroxide production, accomplished through the oxygen reduction reaction via a 2-electron pathway. This method not only simplifies the production process but also upholds environmental sustainability, especially when compared to the conventional anthraquinone method. In this review paper, recent works from the literature focusing on the 2-electron oxygen reduction reaction promoted by carbon electrocatalysts are summarized. The practical applications of these materials in the treatment of effluents contaminated with different pollutants (drugs, dyes, pesticides, and herbicides) are presented. Water treatment aiming to address these issues can be achieved through advanced oxidation electrochemical processes such as electro-Fenton, solar-electro-Fenton, and photo-electro-Fenton. These processes are discussed in detail in this work and the possible radicals that degrade the pollutants in each case are highlighted. The review broadens its scope to encompass contemporary computational simulations focused on the 2-electron oxygen reduction reaction, employing different models to describe carbon-based electrocatalysts. Finally, perspectives and future challenges in the area of carbon-based electrocatalysts for H2O2 electrogeneration are discussed. This review paper presents a forward-oriented viewpoint of present innovations and pragmatic implementations, delineating forthcoming challenges and prospects of this ever-evolving field.
摘要：
过氧化氢(H2O2)是现代最常用的氧化剂之一。已建立的生产方法涉及复杂且昂贵的蒽醌工艺。然而,一个有希望的替代途径是电化学过氧化氢生产，通过2电子途径通过氧还原反应完成。这种方法不仅简化了生产过程，而且维护了环境的可持续性，特别是与常规蒽醌法相比。在这篇综述论文中，总结了近年来有关碳电催化剂促进的2电子氧还原反应的文献。这些材料在处理被不同污染物（药物，染料，杀虫剂,和除草剂)。旨在解决这些问题的水处理可以通过先进的氧化电化学过程来实现，例如电芬顿，太阳能-电-芬顿，和光电芬顿。在这项工作中详细讨论了这些过程，并强调了在每种情况下降解污染物的可能自由基。该评论扩大了其范围，涵盖了专注于2电子氧还原反应的当代计算模拟，采用不同的模型来描述碳基电催化剂。最后,讨论了用于H2O2发电的碳基电催化剂领域的前景和未来挑战。这篇综述论文提出了当前创新和务实实施的前瞻性观点，描绘这个不断发展的领域即将到来的挑战和前景。
