Significant efforts have been made to achieve efficient H₂O₂ generation via oxygen reduction reaction (ORR). Here, the acetylene black (AB)-based gas diffusion electrodes (GDEs) modified by PTFE were fabricated and applied in a closed autoclave for H₂O₂ generation for the first time. The surface morphology, BET, XPS, cyclic voltammetry curves and linear scanning voltammetry curves of GDEs were all characterized. Additionally, the H₂O₂ generation experiments of GDEs and the relationship between H₂O₂ yield and BET surface area (S_BET), double layer capacitance (C_dl) were all investigated. It could be found that the S_BET and C_dl of GDEs kept a good linear relationship with H₂O₂ content, and 2#GDE (AB:PTFE = 1:3) possessed the optimal H₂O₂ generation capacity. Also, the effect of oxygen pressure and current density on H₂O₂ production was evaluated detailedly, indicating higher oxygen pressure was beneficial to the H₂O₂ generation and the preferable current density was 20 mA cm⁻² due to the side reactions. And all the H₂O₂ electro-generation experiments exhibited a higher oxygen utilization efficiency (0.77%–2.93%). Finally, the efficient and synergetic electro-catalytic degradation of isophorone was achieved by self-made PbO₂ anode and GDE.

为了通过氧还原反应（ORR）产生有效的H ₂ O _2，已经做出了巨大的努力。在此，制造了由PTFE改性的乙炔黑（AB）基气体扩散电极（GDE），并首次将其应用于密闭高压釜中，以产生H ₂ O ₂。表征了GDE的表面形态，BET，XPS，循环伏安曲线和线性扫描伏安曲线。此外，GDE的H ₂ O ₂生成实验以及H ₂ O ₂产率与BET表面积（S _BET），双层电容（C _{dl）之间的关系}）进行了调查。可以发现，GDEs的S _BET和C _dl与H ₂ O ₂含量保持良好的线性关系，而2＃GDE（AB：PTFE = 1：3）具有最佳的H ₂ O ₂产生能力。另外，详细评估了氧气压力和电流密度对H ₂ O ₂产生的影响，表明较高的氧气压力有利于H ₂ O _2的产生，并且由于副反应，优选的电流密度为20mA cm ^-2。还有所有的H ₂ O ₂发电实验显示出更高的氧气利用率（0.77％–2.93％）。最后，通过自制的PbO ₂阳极和GDE实现了异佛尔酮的高效协同电催化降解。