ZnAl-layered double hydroxide/H₃PMo₁₂O₄₀ (ZnAl-LDH/PMo₁₂) nano-hybrids were prepared by self-assembly between positively charged LDH nano-sheets and negatively charged PMo₁₂ nano-clusters. The catalytic performance of ZnAl-LDH/PMo₁₂ (ZAM) nano-hybrids on methyl orange (MO) degradation under room temperature and ambient pressure was investigated. The self-assembly process was evidenced by various characterization results, including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N₂ adsorption measurements, and X-ray photoelectron spectroscopy, which also suggested that the structure and morphology of the ZnAl-LDH/PMo₁₂ hybrids played a critical role in their catalytic performance. The ZAM nano-hybrid with a 1:1.59 M ratio of ZnAl-LDH to PMo₁₂ exhibited an excellent catalytic activity for MO degradation, with a 74.2% discoloration rate and a 66.2% total organic carbon (TOC) removal efficiency. After five cycles of reactions, the discoloration rate remained at 62.5%. This high catalytic activity might be attributed to the formation of O₂^•−, which was generated from the reduction of the dissolved oxygen by PMo₁₂. Overall, the results show that the formation of novel nano-hybrid catalysts through self-assembly of LDH nano-sheets with PMo₁₂ nano-clusters leads to a significant improvement in the catalytic activity and stability of Mo based catalysts under room temperature and ambient pressure.

通过带正电的LDH纳米片和带负电的PMo ₁₂纳米团簇之间的自组装，制备了ZnAl层状双氢氧化物/ H ₃ PMo ₁₂ O ₄₀（ZnAl-LDH / PMo ₁₂）纳米杂化物。研究了ZnAl-LDH / PMo ₁₂（ZAM）纳米杂化物在室温和环境压力下对甲基橙（MO）降解的催化性能。X射线衍射，扫描电子显微镜，透射电子显微镜，N ₂吸附测量和X射线光电子能谱等各种表征结果证明了其自组装过程，也表明了ZnAl-的结构和形态。乳酸脱氢酶₁₂种混合动力汽车在其催化性能中发挥了关键作用。ZnAl-LDH与PMo _12的比例为1：1.59 M的ZAM纳米杂化物表现出优异的MO降解催化活性，其脱色率为74.2％，总有机碳（TOC）去除率为66.2％。经过五个循环的反应，变色率保持在62.5％。这种高催化活性可能归因于O ₂ ^•-的形成，这是由于PMo ₁₂还原了溶解氧而产生的。总体而言，结果表明，LDH纳米片与PMo _12的自组装形成了新型纳米混合催化剂。 纳米簇在室温和环境压力下导致Mo基催化剂的催化活性和稳定性的显着改善。