新型大孔仿生光催化剂Fe(Ⅲ)-taPc/SiO_2的制备及其光催化降解性能  

Preparation and photocatalytic degradation properties of novel biommimetic photocatalyst Fe(Ⅲ)-taPc/SiO_2

作　　者：张钰[1] 张瑞丰[1] 

机构地区：[1]宁波大学材料科学与化学工程学院,浙江宁波315211

出　　处：《功能材料》2013年第7期1001-1005,共5页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)前期研究专项资助项目(2010CB635116)

摘　　要：采用简单的一步溶液浸渍法在大孔SiO2材料上负载四羧基酞菁铁(Fe(Ⅲ)-taPc),制备出有较高催化活性并可重复使用的新型大孔仿生光催化剂Fe(Ⅲ)-taPc/SiO2,通过扫描电镜(SEM)、透射电镜(TEM)、紫外-可见漫反射光谱(UV-Vis)、拉曼光谱(Raman)对该催化剂进行了表征,并以有机染料罗丹明B为目标降解物,考察了其可见光光催化性能及循环使用性。实验证明Fe(Ⅲ)-taPc分子与SiO2载体存在较为匹配的相互作用,因而负载后其分散性好、稳定性高,在可见光照射下该催化剂能快速催化降解罗丹明B,反应60min后的降解率最高达97.4%,经过6次循环使用后催化剂的活性没有明显变化。Fe（Ⅲ）-taPc was loaded on new macroporous SiO2 materials via a simple immersing/solvent exchanging method,the obtained macroporous photo-catalysts can be recycling-usable with high catalytic activity.The catalysts were characterized by means of SEM,HRTEM,UV-Vis diffuse reflectance spectrometry and Raman spectrometry.The photocatalytic activity and circulating degradation rate of the photo-catalysts were determined by using rhodamine B as the objective substance.The results showed that the Fe（Ⅲ）-taPc molecules dispersed very well on the wall of the SiO2 support due to an effective interaction between Fe（Ⅲ）-taPc and the support.Rapid degradation of rhodamine B was observed under the radiation of visible light,the highest degradation rate is up to 97.4% within 60min of reaction.The catalysts exhibited activities that changed very slightly during 6 times of cycling utilization.

关 键 词：大孔SiO2 酞菁铁 罗丹明B 可见光光催化 

分 类 号：O613[理学—无机化学]