A catalyst consisting of rod-like ceria coated on activated carbon (CeO₂@AC) was prepared by an urea-mediated hydrothermal procedure and used towards ozonation of oxalic acid (OA) in water. The results showed that CeO₂@AC exhibits good catalytic activity with excellent stability. The ozonation reaction catalyzed by CeO₂@AC led to a complete removal of OA (1.5 mM, 0.5 g/L catalyst) in 60 min and showed a 75% increase in OA removal compared to the single non-catalytic ozonation. After five consecutive reuse cycles, CeO₂@AC showed almost the same catalytic performance with few only changes in ceria content and surface morphology.

通过尿素介导的水热法制备了由涂覆在活性炭上的棒状二氧化铈组成的催化剂（CeO ₂ @AC），并将其用于水中草酸（OA）的臭氧化反应。结果表明，CeO ₂ @AC具有良好的催化活性和良好的稳定性。CeO ₂ @AC催化的臭氧氧化反应可在60分钟内完全去除OA（1.5 mM，0.5 g / L催化剂），与单次非催化臭氧氧化相比，OA去除率提高了75％。在连续五个重复使用循环后，CeO ₂ @AC表现出几乎相同的催化性能，二氧化铈含量和表面形态几乎没有变化。