A novel high efficiency visible photocatalyst TbMnO₃@CeO₂ composites was first synthesized by microwave-assisted acrylamide gel method. The phase purity, surface morphology, optical, magnetic, photoluminescent and photocatalytic properties of TbMnO₃, CeO₂ and TbMnO₃@CeO₂ composites were compared. The average particle sizes for the TbMnO₃, CeO₂ and TbMnO₃@CeO₂ composites are estimated to be 80, 55 and 70 nm, respectively. After the introduction of CeO₂ nanoparticles into the TbMnO₃ precursor, the light absorption capacity is enhanced, while the energy band (Eg) value is greatly reduced. TbMnO₃@CeO₂ composites exhibits enhanced magnetic properties, low electron hole pair recombination rate and high photocatalytic activity for the degradation of MO under visible light irradiation. The high photocatalytic activity can be ascribed to the synergistic effect of light absorption capacity, the recombination rate of electron hole pairs and hydroxyl radicals.

首先通过微波辅助的丙烯酰胺凝胶法合成了新型高效可见光催化剂TbMnO ₃ @CeO ₂。比较了TbMnO ₃，CeO ₂和TbMnO ₃ @CeO ₂复合材料的相纯度，表面形貌，光学，磁性，光致发光和光催化性能。TbMnO ₃，CeO ₂和TbMnO ₃ @CeO ₂复合材料的平均粒径分别估计为80、55和70 nm。将CeO ₂纳米颗粒引入TbMnO _3之后前体，光吸收能力增强，而能带（Eg）值大大降低。TbMnO ₃ @CeO ₂复合材料在可见光照射下具有增强的磁性能，低的电子空穴对复合率和较高的光催化活性，可降解MO。高的光催化活性可以归因于光吸收能力，电子空穴对和羟基自由基的复合率的协同效应。