【摘要】 文中通过水热法成功制备了CoAl-LDH/Bi₂MoO₆复合光催化剂，并研究了其对工业废水中罗丹明B的去除性能，利用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、傅里叶红外显微成像光谱仪（FTIR）、X射线光电子能谱仪（XPS）等对CoAl-LDH/Bi₂MoO₆催化剂进行一系列表征，考察了不同的pH、掺杂量、H₂O₂浓度、催化剂投加量对RhB降解效率的影响。试验结果表明，在pH值=6、H₂O₂物质的量浓度为10 mmol/L、投加量为0.6 g/L的条件下，质量比为1∶5的CoAl-LDH/Bi₂MoO₆表现出最优异的光催化芬顿活性，在60 min内对质量浓度为10 mg/L的RhB去除率达到97.8%,比单独的光催化体系和非均相芬顿体系的去除率均有提高，且循环后仍能保持较高的催化性能。这说明光催化与芬顿技术之间存在协同效应，CoAl-LDH/Bi₂MoO₆异质结促进了类芬顿反应中Co²⁺、Co³⁺的循环，同时提高了光生电子与空穴的分离和传输效率。更多还原

【Abstract】 In this experiment, CoAl-LDH/Bi₂MoO₆ composite photocatalysis catalyst was successfully prepared by hydrothermal method and the removal performance of rhodamine B（RhB） in industrial wastewater was studied. A series of characterization of CoAl-LDH/Bi₂MoO₆ catalyst was carried out by XRD, SEM, FT-IR, XPS, and the effects of different pH value, doping amount, H₂O₂ concentration, and catalyst dosage on RhB degradation efficiency were investigated. The experimental results showed that, under the conditions of pH value=6, H₂O₂ concentration of 10 mmol/L, and dosage of 0.6 g/L, CoAl-LDH/Bi₂MoO₆ with a mass ratio of 1∶5 showed the best photocatalytic-Fenton activity, and the removal rate of RhB with a concentration of 10 mg/L reached 97.8% in 60 min, which was higher than that of the single photocatalytic system and the heterogeneous Fenton system, and still maintained a high catalytic performance after cycling. This showed that there was a synergistic effect between photocatalysis and Fenton technology. CoAl-LDH/Bi₂MoO₆ heterojunction promoted the cycle of Co²⁺ and Co³⁺ in Fenton reaction, at the same time, the separation and transmission efficiency of photogenerated electrons and holes was improved.更多还原