Ozonation showed a good capacity on micro-emerging pollutants degradation from water or wastewater treatment, but its leading to the formation of toxic bromate. Bromate inhibition in catalytic ozonation treatment remained an important challenge. In this study, a novel catalytic ozonation was promoted using perovskite oxide as catalyst, showing good performance on synchronously degradation benzotriazole (BZA) and elimination bromate. LaCoO₃ exhibited significant catalytic activity for BZA degradation, with complete degradation achieved at 15 min, and about 71% BrO₃⁻ inhibition, compared with single ozonation. LaFeO₃ showed no catalytic activity for BZA degradation but inhibited the generation of BrO₃⁻ by 73%. Further investigation involving reactive oxygen species, important intermediates, the structure and surface chemical properties of the catalysts showed that H₂O₂ act an important effect but various in different ozonation systems. The combination of the surface hydroxyl groups on LaFeO₃ with H₂O₂ to form [Fe-H₂O₂]_s was found to occur in LaFeO₃ catalytic ozonation, resulting the reduction of BrO₃⁻. The production of ROS in LaCoO₃ catalytic system and the cyclic of Co³⁺/Co²⁺ accelerated the BZA degradation efficiency and inhibition of BrO₃⁻. A novel BrO₃⁻ elimination pathway was proposed, as an important contribution for the application of catalytic ozonation.

臭氧化处理对水或废水处理过程中产生的微小污染物的降解具有良好的能力，但会导致有毒溴酸盐的形成。在催化臭氧化处理中溴酸盐的抑制仍然是一个重要的挑战。在这项研究中，使用钙钛矿氧化物作为催化剂促进了一种新型的催化臭氧化反应，在同步降解苯并三唑（BZA）和消除溴酸盐方面表现出良好的性能。LaCoO ₃表现出显著催化活性BZA降解，具有完全降解在15分钟实现的，并且约71％的BrO ₃ ^-抑制，单臭氧化进行比较。载LaFeO ₃显示了BZA退化没有催化活性，但抑制了人权法的代₃ ^-减少了73％对活性氧，重要中间体，催化剂的结构和表面化学性质的进一步研究表明，H ₂ O ₂发挥着重要作用，但在不同的臭氧化体系中表现出不同。上载LaFeO表面羟基基团的组合₃用H ₂ ö ₂形成的[Fe-H ₂ ö ₂ ]_小号被发现在载LaFeO发生₃催化臭氧，造成的BrO的还原₃ ^- 。LaCoO ₃催化体系中ROS的产生及Co ³⁺ / Co ²⁺的环化加速了降解BZA效率和的BrO的抑制₃ ^- 。一种新型的BrO ₃ ^-消除途径提出，作为催化臭氧化应用做出了重要贡献。