摘要
采用超声-回流方法制备了反式-二羟基-5,10,15,20-四苯基卟啉锡髧(SnP)和多壁碳纳米管(MWNTs)复合物光催化剂(SnP/MWNTs),用红外光谱、紫外-可见吸收光谱、X射线光电子能谱等方法对其进行了表征。研究了SnP/MWNTs在可见光照射下对罗丹明B催化降解的性能,并结合电化学阻抗谱和伏安特性等测试对其可见光催化降解机理进行了讨论。结果表明,SnP优异的可见光吸收能力结合MWNTs强的电子转移能力,有效地促进了光生电子的转移,使SnP/MWNTs显示出优异的可见光催化活性,可见光照射5h后,对罗丹明B的降解效率达92%。
The composite photocatalyst（SnP/MWNTs） of trans-dihydroxy（5,10,15,20-tetraphenylporphyrinato） tin（Ⅳ）（SnP） and multiwalled carbon nanotubes（MWNTs） was prepared by a sonication-refluxing method.The SnP/MWNTs was characterized by FTIR,UV-Vis and XPS.The visible light photocatalytic activity of the SnP/MWNTs catalyst was evaluated by the degradation of the Rhodamine B aqueous solution.The photocatalytic mechanism was discussed based on the results of electrochemical impedance spectroscopy and I-V curves.The results showed that the high molar absorption coefficient of SnP in the visible region and strong electron transfer ability of MWNTs facilitated the transfer of the photogenerated electrons and improved the visible light photocatalytic activity of the SnP/MWNTs catalyst.The degradation ratio of Rhodamine B was 92% after 5 h visible light irradiation using SnP/MWNTs as the photocatalyst.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第10期1830-1836,共7页
Chinese Journal of Inorganic Chemistry
基金
国家高技术研究发展计划项目(No.2009AA05Z101)资助
关键词
卟啉锡
多壁碳纳米管
复合物
可见光催化活性
tin porphyrin
multiwalled carbon nanotubes
composites
visible light photocatalytic activity
