居室环境内臭氧严重危害人体健康，催化分解法是最有效的臭氧净化技术之一。高活性和稳定性臭氧分解催化剂的开发是关键，特别是在高湿度大空速下，臭氧的低温催化分解具有较高的技术壁垒。层状双金属氢氧化物（LDH）具有独特的二维层状结构，具有灵活的结构可调控性。本实验通过共沉淀法用过渡金属制得Ni₃Fe、Ni₃Co、Ni₃Mn与Co₃Fe水滑石结构催化剂，在30 ℃、600000 mL/(g·h)、低湿度RH < 5%和高湿度RH > 90%条件下，测试了其臭氧催化分解性能。结果表明，Ni ₃Co-LDH在低湿度和高湿度下，都表现出优良的臭氧分解性能，臭氧转化率分别为88%和77%。结合XRD、BET、SEM、XPS、Raman、FT-IR、TG等表征手段，揭示了LDH催化剂优良臭氧分解性能的内在原因机理。本实验的研究为过渡金属臭氧分解催化剂开发提供了新的思路。

Ozone in the indoor environment is seriously harmful to human health, and the catalytic decomposition method is one of the most effective ozone purification technologies. The development of ozone decomposition catalyst with superior activity and stability is the bottleneck, especially under high humidity, high space velocity, and ambient temperature. Layered double hydroxide (LDH) has a unique two-dimensional layered structure and excellent water resistance. In the paper, Ni₃Fe, Ni₃Co, Ni₃Mn, and Co₃Fe hydrotalcite-structured catalysts were prepared by the coprecipitation method. And their ozone catalytic decomposition performance was tested under 30 ℃, 600000 mL/(g·h), low humidity (RH< 5%), and high humidity (RH > 90%). The results showed that Ni₃Co-LDH exhibited excellent ozone decomposition performance, and the ozone conversion was 88% and 77% under low humidity and high humidity, respectively. Combined with XRD, BET, SEM, XPS, Raman, FT-IR, TG and other characterizations, the intrinsic mechanism of the excellent ozone decomposition performance of LDH catalysts was revealed. The paper provided new ideas for developing transition metal ozone decomposition catalysts.