HZSM-5分子筛负载SrTiO_3光催化降解活性艳红X-3B  

Photocatalytic degradation of reactive brilliant red X-3B on SrTiO_3 supported on HZSM-5 molecular sieve

作　　者：杨丽丽[1] 李传国[1] 王宏[1] 胡婷婷[1] 张文杰[1] YANG Lili LI Chuanguo WANG Hong HU Tingting ZHANG Wenjie(School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China)

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159

出　　处：《复合材料学报》2016年第11期2682-2687,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金青年基金(51504154);辽宁省教育厅科技研究一般项目(L2014081);辽宁省自然科学基金(2015020186)

摘　　要：采用溶胶-凝胶法制备HZSM-5分子筛负载SrTiO_3,对其进行XRD、FTIR和N2吸附-脱附表征,研究负载对活性艳红X-3B光催化降解过程的影响。通过分析降解液的FTIR谱图、紫外-可见光谱和总有机碳(TOC)数据,对活性艳红X-3B的光催化降解过程进行了探讨。结果表明:催化剂的主要成分为钙钛矿结构SrTiO_3,负载对SrTiO_3晶粒尺寸几乎没有影响。纯SrTiO_3没有明显的孔结构,负载后样品的比表面积和孔隙主要由HZSM-5提供。负载之后催化剂的降解活性显著提高,30%SrTiO_3/HZSM-5对活性艳红X-3B染料溶液的脱色和TOC去除速率最快。SrTiO_3was supported on HZSM-5molecular sieve by sol-gel method.XRD,FTIR,and N2 adsorptiondesorption measurements were carried out to study the influences of supporting on photocatalytic degradation process of reactive brilliant red X-3B.The processes in photocatalytic degradation of reactive brilliant red X-3Bwere discussed after analyzing the data of FTIR spectra,ultraviolet-visible spectroscopy,and total organic carbon（TOC）data of the solutions during degradation.The results show that the photocatalysts are mainly composed of perovskite SrTiO_3.Crystallite size of SrTiO_3 has nearly no change after supporting.Pure SrTiO_3 does not have apparent porous structure,so that specific surface area and pores of the supported samples are mainly provided by HZSM-5.Photocatalytic activity of the supported catalysts is obviously improved with the fastest decoloration and TOC removal rates on 30% SrTiO_3/HZSM-5for reactive brilliant red X-3B.

关 键 词：钛酸锶 活性艳红X-3B 光催化 HZSM-5 负载 

分 类 号：TQ174[化学工程—陶瓷工业]