通过碱水热反应合成了Ti₃C₂,并以其为载体制备了不同负载量的Ti₃C₂-Ag₃PO₄光催化剂。利用FT-IR、XRD、SEM、XPS等对光催化剂进行表征。结果表明,在240℃水热条件下,碱刻蚀法制备的Ti₃C₂为刻蚀程度较低的片层结构,同时材料中有微量的TiO₂存在,同时Ag₃PO₄以立方相的形式负载到Ti₃C₂载体表面。随着Ag₃PO₄负载量的增加,Ti₃C₂-Ag₃PO₄的光催化活性逐渐增大,在催化剂质量为0.01 g、反应时间为60 min时,Ti₃C₂-Ag₃PO₄-85%对亚甲基蓝的降解率达到95%。Ti₃C₂与Ag₃PO₄异质结的存在使其具有较强的电荷分离能力和优异的光催化性能。

Ti₃C₂ is synthesized through alkaline hydrothermal reaction,and used as support to prepare Ti₃C₂-Ag₃PO₄ photocatalysts with different loading amount.The photocatalysts are characterized by means of FT-IR,XRD,SEM and XPS.It is indicated that Ti₃C₂ prepared through alkali etching method at 240℃hydrothermal condition presents a layer structure with low etching degree.In addition,there are trace TiO₂ in Ti₃C₂ material,and Ag₃PO₄ has been supported on the surface of Ti₃C₂ support.The photocatalytic activity of Ti₃C₂-Ag₃PO₄ increases with the higher Ag₃PO₄ loading amount.The degradation rate of methylene blue by Ti₃C₂-Ag₃PO₄-85% can reach 95% when the usage of the catalyst is 0.01 g and the reaction performs 60 min.The presence of heterojunction between Ti₃C₂ and Ag₃PO₄ makes the catalyst have strong charge separation ability and excellent photocatalytic performance.

徐竞帆(1995-),男,硕士,助教,研究方向为纳米复合材料,通讯联系人,353594270@qq.com。