Hydrogen peroxide (H₂O₂) is one of the most popular and widely used oxidants. Among the wide range of synthesis techniques used for the production of H₂O₂; the electrochemical method allows the use of gas diffusion electrodes to generate H₂O₂ without limiting the low solubility of O₂ in water. The present work reports the modification of carbon black with quinone, where the generation of H₂O₂ occurs in an electrochemical/chemical mechanism. The results obtained by this technique were found to be highly promising. The use of the organic compound 1,2-dihydroxyanthraquinone to modify carbon black electrode resulted in greater production of H₂O₂. Carbon black electrode modified with 1% of 1,2-dihydroxyanthraquinone yielded 298 mg L⁻¹ of H₂O₂ at the end of 90 min of experiment, reaching an electrical efficiency of approximately 25.5%. Based on the findings of this study, H₂O₂ generation is found to be directly associated with the chemical structure of the carbon modifier and not solely related to the presence of quinone groups.

Graphical Abstract

过氧化氢（H ₂ O ₂）是最流行和广泛使用的氧化剂之一。在用于生产H ₂ O ₂的广泛的合成技术中; 电化学方法允许使用气体扩散电极产生H ₂ O _2，而不会限制O ₂在水中的低溶解度。本工作报告了用醌对炭黑的改性，其中生成了H ₂ O ₂发生在电化学/化学机理中。发现通过该技术获得的结果非常有前途。使用有机化合物1,2-二羟基蒽醌修饰炭黑电极导致H ₂ O _2的产量增加。在90分钟的实验结束时，用1％的1,2-二羟基蒽醌改性的炭黑电极产生298 mg L ^-1的H ₂ O ₂，电效率约为25.5％。基于该研究的发现，发现H ₂ O _2的产生与碳改性剂的化学结构直接相关，而不仅与醌基团的存在有关。

图形概要