The low efficiency of peroxone (O₃/H₂O₂) at acidic and neutral pH restrained its application in water purification. To overcome this shortcoming, CeO_X@SiO₂ with large surface area, abundant surface oxygen vacancies (V_o), Lewis sites (L sites) and high Ce(III)/Ce(IV) ratio were synthesized to change the traditional electron transfer pathway between O₃ and H₂O₂. V_o was facile in absorbing H₂O₂ to form V_o-H₂O₂ and L sites were capable of absorbing O₃ to form L-O₃. The electron at V_o could be donated to V_o-H₂O₂ and generate V_o-HO₂⁻, which then effectively triggered the decomposition of L-O₃ at CeO_X@SiO₂’s interface and O₃ in bulk solution. The electron transfer at the solid-liquid interface with the help of Ce³⁺/Ce⁴⁺ redox cycle and V_o was pH independent and different from the traditional electron transfer of peroxone reaction. Nitrobenzene (NB) mineralization was promoted to 92.5% in CeO_X@SiO₂-peroxone, but only 63.8% TOC was removed in tradition peroxone process. Moreover, CeO_X@SiO₂-peroxone had a wide pH application range. NB’s degradation in CeO_X@SiO₂-peroxone process followed the co-oxidation mechanism of superoxide free (•O₂⁻) and hydroxyl radical (•OH). The finding of this study could broaden the popularization of peroxone in water treatment and provided a strategy for catalyst design.

在酸性和中性pH值下，Peroxone（O ₃ / H ₂ O ₂）的效率低，限制了其在水净化中的应用。为了克服这一缺点，合成了具有大表面积，丰富的表面氧空位（V _o），路易斯位点（L位）和高的Ce（III）/ Ce（IV）比的CeO _X @SiO ₂来改变传统的电子转移O ₃和H ₂ O ₂之间的通道。V _o易于吸收H ₂ O ₂形成V _o -H ₂ O _2，并且L位能够吸收O₃形成LO ₃。在V电子_ø可以捐赠到V _ö -H ₂ ö ₂和生成V _ö -HO ₂ ^- ，其然后引发有效LO的分解₃在的CeO _X @SiO ₂的接口和O ₃在本体溶液中。在Ce ³⁺ / Ce ⁴⁺氧化还原循环和V _o的帮助下，固液界面的电子转移不受pH值的影响，与传统的过氧化物反应的电子转移不同。CeO中的硝基苯（NB）矿化作用提高至92.5％_X @SiO ₂ -peroxone，但在传统的peroxone工艺中仅去除了63.8％的TOC。此外，CeO _X @SiO _2-过氧化物具有广泛的pH应用范围。NB的以CeO降解_X @SiO ₂ -peroxone过程随后超氧自由的共氧化机制（•Ø ₂ ^- ）和羟基自由基（OH•）。这项研究的发现可以扩大过氧乐酮在水处理中的普及，并为催化剂设计提供了一种策略。