香豆素负载SBA-15材料及其对Cu^(2+)的识别和吸附性能

Coumarin Immobilized SBA-15 Material Used for Selective Recognition and Adsorption of Cu^(2+)

通过将香豆素探针以共价键负载到介孔硅材料SBA-15上,合成了一种无机-有机杂化荧光材料SBA-C。FT-IR、TEM、XRD表征结果证明香豆素衍生物成功负载于SBA-15上,负载后介孔材料的有序孔道没有被破坏。众多的金属离子在乙腈中,仅Cu2+引起SBA-C产生荧光增强14.5倍并伴光谱蓝移68 nm。此外,SBA-C对Cu2+表现出较强的吸附能力,吸附率可达90.8%。

An inorganic-organic hybrid fluorescence material SBA-C was prepared by covalent immobilization of a coumarin probe within the channels of SBA-15. The results of FT-IR,TEM,XRD demonstrate that coumarin is successfully grafted onto the inner surface of SBA-15 and its ordered mesoporous structure is not broken. Among metal ions,only Cu2 ＋led a 14. 5-fold fluorescence enhancement and a 68 nm blue-shift in Me CN. Furthermore,SBA-C exhibited high adsorption capacity of 90. 8% for Cu2 ＋.