负载型SrTiO_3/HZSM-5光催化材料制备与性能研究  

Preparation and Properties of Supported SrTiO_3/HZSM-5 Photocatalyst

作　　者：刘春玲[1] 毕菲非 张文杰[1] 何红波[2] 

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159 [2]中国科学院沈阳应用生态研究所,沈阳110016

出　　处：《材料工程》2016年第12期22-27,共6页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(41271251);辽宁省自然科学基金资助项目(2015020186)

摘　　要：采用溶胶-凝胶法制备HZSM-5负载SrTiO3,对其进行XRD,SEM,BET,BJH和FT-IR表征,研究SrTiO3/HZSM-5光催化降解活性艳红X-3B的活性。结果表明：SrTiO3材料的主要成分为钙钛矿结构SrTiO3,并含有少量SrCO3相。在负载型χSrTiO3/HZSM-5样品中,SrTiO3包覆在HZSM-5的外表面。负载型催化剂的比表面积主要由分子筛提供,材料中的孔径主要分布在2-20nm范围内。负载后SrTiO3的光催化活性明显提高,30%SrTiO3/HZSM-5具有最强的光催化活性。经90min光照后,93.8%的活性艳红X-3B在30%SrTiO3/HZSM-5上降解,而在纯SrTiO3上只能降解23.9%。HZSM-5 supported SrTiO3 was prepared using sol-gel method.The materials were characterized by XRD,SEM,BET,BJH and FT-IR measurements.The activity of photocatalytic degradation of reactive brilliant red X-3Bwas studied on SrTiO3/HZSM-5.The results show that SrTiO3 material is mainly composed of perovskite SrTiO3,as well as a small amount of SrCO3 phase.SrTiO3is coated on the external surface of HZSM-5in theχSrTiO3/HZSM-5.The specific surface area of the supported materials is mainly provided by the zeolite,while pore size in the materials is mainly in the range between 2-20 nm.Photocatalytic activity of SrTiO3 is obviously enhanced after being supported,and the 30%SrTiO3/HZSM-5has the maximum activity.93.8% of reactive brilliant red X-3B can be degraded on 30%SrTiO3/HZSM-5after 90 minites irradiation,while only 23.9%of the dye can be degraded on pure SrTiO3.

关 键 词：钛酸锶 光催化 HZSM-5 溶胶-凝胶 

分 类 号：O643[理学—物理化学]