模板法制备纳米洋葱碳/二氧化钛及其光催化性能研究

Preparation of nano onion carbon/titanium dioxide by template method and study on its photocatalytic performance

以SBA-15为模板、钛酸丁酯(TBT)为Ti源,采用溶胶-凝胶法复合磁性纳米洋葱碳(MCNOs)制备TiO_(2)粒径为10 nm、具有良好磁性分离特性的TiO_(2)/MCNOs复合光催化剂。通过SEM、XRD、BET、XPS、FT-IR等表征手段对样品的形貌结构及物相组成进行了表征,并在可见光下对罗丹明B(Rh B)的光降解效果进行分析。结果表明,4%MCNOs/TiO_(2)(S)的光催化性能最好,质量浓度为0.55 g/L时,10 mg/L的RhB溶液降解率可达到98%。

Taking SBA-15 as template,butyl titanate( TBT) as Ti source,and magnetic nano-onion carbon( MCNOs) as carbon source,TiO_(2)/MCNOs composite photocatalyst with good magnetic separation characteristics and10 nm of TiO_(2) are prepared by means of sol-gel method.SEM,XRD,BET,XPS,FT-IR and other methods are employed to characterize the sample ’ s morphology structure and phase composition. Analysis on the photodegradation effect of rhodamine B( Rh B) over the catalyst under visible light shows that 4%MCNOs/TiO_(2)( S) shows the best photocatalytic performance.As its dosage is 0. 55 g·L-1,the degradation rate of 10 mg·L-1 Rh B solution can reach 98%.