【摘要】 CeO₂和Bi₂MoO₆作为典型的半导体光催化材料，在降解有机污染物方面具有良好应用前景，但单一材料存在载流子复合率高、可见光响应不足等问题。为提升其光催化性能，设计合成了不同质量比的CeO₂和Bi₂MoO₆复合材料，采用水热法和溶剂热法构建异质结结构，运用XRD、TEM、XPS、UV-vis等手段进行表征，系统分析了其光学性质与结构特征。测试CeO₂/BMO在可见光下对四环素和亚甲基蓝的降解性能，并结合电化学和活性物种实验探讨光催化机理。结果表明，CeO₂/BMO-3复合材料形成稳定Z型异质结，显著提升光生电子迁移与分离效率，降解效率明显优于单一组分。研究提出构建CeO₂和Bi₂MoO₆复合体系的新策略，为高效可见光催化剂的设计与应用提供理论依据与实验基础。更多还原

【Abstract】 CeO₂ and Bi₂MoO₆, as typical semiconductor photocatalytic materials, have good application prospects in the degradation of organic pollutants. However, single materials have problems such as high carrier recombination rate and insufficient visible light response.To enhance its photocatalytic performance, CeO₂ and Bi₂MoO₆ composite materials with different mass ratios were designed and synthesized.Heterojunction structures were constructed using hydrothermal and solvothermal methods, and characterized by XRD, TEM, XPS, UV vis,and other methods. The optical properties and structural characteristics were systematically analyzed. Test the degradation performance of CeO₂/BMO on tetracycline and methylene blue under visible light, and explore the photocatalytic mechanism through electrochemical and active species experiments. The results indicate that CeO₂/BMO-3 composite material forms a stable Z-type heterojunction, significantly improving the efficiency of photo generated electron migration and separation, and the degradation efficiency is significantly better than that of a single component. A new strategy for constructing CeO₂ and Bi₂MoO₆ composite system has been proposed, providing theoretical basis and experimental basis for the design and application of efficient visible light catalysts.更多还原