Exploring an alternative strategy with high efficiency and low cost to abate formaldehyde (HCHO) in indoor environment, is of increasing significance for people's health. CeO₂ catalysts prepared by hydrothermal, precipitation and calcination methods were investigated for HCHO removal at ambient temperature. It is found that indoor fluorescent light visibly boosts the catalytic performance of CeO₂ catalysts for HCHO decomposition at ambient temperature. Among the CeO₂ catalysts, CeO₂ prepared from hydrothermal method (CeO₂–H) exhibits a superior catalytic performance and an excellent durability by eight recycle times. Based on the characterization and analysis, the excellent catalytic performance of CeO₂–H is mainly contributed by its abundance of surface oxygen vacancies, and photogenerated electrons and hole activated by fluorescent light. This work shows a potential practicability in HCHO pollution elimination by taking full advantage of the existing lighting in indoor environments.

探索一种高效、低成本的替代策略来减少室内环境中的甲醛（HCHO），对人们的健康具有越来越重要的意义。研究了通过水热法、沉淀法和煅烧法制备的CeO _{2催化剂在环境温度下对 HCHO 的去除效果。}研究发现，室内荧光灯明显提高了 CeO ₂催化剂在环境温度下对 HCHO 分解的催化性能。在CeO ₂催化剂中，水热法制备的CeO 2 （CeO _{2 -H}）表现出优异的催化性能和8次循环后的优异耐久性。基于表征和分析，CeO 的优异催化性能₂ -H主要是由于其丰富的表面氧空位和荧光激活的光生电子和空穴。这项工作显示了通过充分利用室内环境中现有的照明来消除 HCHO 污染的潜在实用性。