TiO_(2)/蒙脱石复合材料的制备及光催化降解罗丹明B研究  

Preparation of TiO_(2)/Montmorillonite Composite and Photocatalytic Degradation Research of Rhodamine B

作　　者：马欢 曹建亮 MA Huan;CAO Jianliang(College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo 454000,China;State Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China)

机构地区：[1]河南理工大学化学化工学院,河南焦作454000 [2]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454000

出　　处：《河南化工》2025年第3期32-37,共6页Henan Chemical Industry

摘　　要：以钠基蒙脱石(MMT)为基底材料,钛酸四丁酯为钛源,采用溶胶-凝胶法制备了TiO_(2)/蒙脱石复合材料。以罗丹明B作为模拟废水,对不同制备条件的复合材料进行了光催化降解、自由基掩蔽和稳定性实验。采用透射电镜(TEM)、X射线光电子能谱分析(XPS)、X射线衍射(XRD)、光电流响应(TPC)、电化学阻抗(EIS)等手段对其晶体结构、形貌、光电转换能力、反应电阻进行了表征。结果表明,在煅烧温度400℃,煅烧时间2 h,蒙脱石/钛酸四丁酯质量比为5%,投加量为1 g/L时,复合材料30 min内对罗丹明B(RhB)的降解率达99%,光催化反应主要活性物质为·OH和h+,且具有优异的稳定性。Using sodium montmorillonite as the base material and n-butyl titanate as the titanium source,TiO_(2)/montmorillonite composites are prepared by sol-gel method.Using Rhodamine B as simulated wastewater,photocatalytic degradation,free radical masking tests,and stability experiments of composite materials with different conditions are carried out.The crystal structure,morphology,photoelectric conversion ability,and reaction resistance are characterized by transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),photocurrent response(TPC),electrochemical impedance spectroscopy(EIS),and other methods.The results show that when calcination temperature is 400℃,calcination time is 2 h,montmorillonite/tetrabutyl titanate mass ratio is 5%,and dosage is 1 g/L,the degradation rate of rhodamine B reaches 99%within 30 minutes.The main active substance in the photocatalytic reaction are·OH and h+,and it has excellent stability.

关 键 词：溶胶-凝胶 TiO_(2) 蒙脱石 罗丹明B 光催化降解 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ426.64[化学工程]