介孔α-MnO₂/蒙脱石复合材料对罗丹明B的催化降解性能
Preparation of Mesoporous α-MnO₂/Montmorillonite and Its Performance in Catalyting Degradation of？Rhodamine B

摘要：本论文以高锰酸钾和硫酸锰为原料，修饰蒙脱石为载体，通过水热法制备介孔α-MnO2和介孔α-MnO2-蒙脱石复合材料.采用X射线粉末衍射(XRD)、扫描电镜(SEM)、及比表面(BET)等方法对制备材料进行表征.以介孔α-MnO2和介孔α-MnO2-蒙脱石复合材料为催化剂，以初始浓度为100mg/L的罗丹明B为模拟废水，研究了罗丹明B的降解动力学，结果表明，介孔α-MnO2-蒙脱石复合材料对罗丹明B的降解效果是介孔α-MnO2的2倍.并且三次重复实验后，α-MnO2-蒙脱石复合材料的催化性基本没有损失，说明α-MnO2-蒙脱石复合材料的稳定性.
： Abstract：Mesoporous α-MnO2 and mesoporous α-MnO2/montmorillonite composites (Mn-Mt) were prepared under laboratory by using KMnO4 and MnSO4 as raw material and the modified montmorillonite as the carrier, and the synthesized samples were characterized by XRD, SEM, BET techniques. Rhodamine B degradation tests were carried out with 100 mg/L Rhodamine B and 0.15g/L catalyst of α-MnO2 or mesoporous α-MnO2/montmorillonite. The degradation dynamics of Rhodamine B showed that Mn-Mt composite material has better catalytic properties to rhodamine B than α-MnO2. After three recycles, α-MnO2–Mt did not exhibit any significant loss of catalytic activity, confirming the catalyst was essentially stable