摘要
该文用"嫁接"的方法将β-环糊精(β-CD)修饰在乙烷桥键有序介孔有机硅材料(PMO)上,并以同样的方法合成了β-CD修饰的介孔材料SBA-15作为对比材料。通过傅里叶变换红外光谱(FTIR)、高分辨透射电镜(HRTEM)、X射线粉末衍射(XRD)、氮气吸附以及热分析(TGA)对修饰前后的PMO材料进行表征。考察了修饰前后PMO材料对于水中污染物苯胺和对苯二酚的吸附性能,由结果可知,β-CD修饰的乙烷桥键有序介孔有机硅材料(PMO-CD)对于苯胺的吸附量为1.54 mg/g,相对于PMO材料而言,β-CD的修饰使其吸附能力被极大地抑制,而其对于对苯二酚的吸附量为12.94 mg/g,吸附性能得到了很大提高。因此,PMO-CD在处理水中污染物领域具有潜在的应用价值。
In this paper, ethyl-bridged periodic mesoporous organosilica （PMO） is modified with flcyclodextrin（β-CD） using ＂grafting＂ method. As a eontrast,β-CD modified mesoporous silica SBA- 15 is synthetized by the same method. Funetionalized mesoporous PMO materials were characterized by means of Fourier transform infrared （FTIR） spectroscopy, high-resolution transmission electron microscopy（HRTEM）, powder X-ray diffraction（XRD）, nitrogen adsorption-desorption measurements and thermogravimetric analysis （TGA）. The adsorption properties of the pollutants in water, phenylamine and p-benzenediol, are investigated. For β-CD modified ethyl-bridged periodic mesoporous organosilica（ PMO-CD）, the results show that the adsorption quantity of phenylamine was 1.54 mg/g, which was reduced due to the β-CD modification compared with PMO. But the adsorption quantity of p- benzenediol was 12. 94 mg/g, which was improved greatly. Therefore, PMO-CD has the potential for applications in the treatment of water pollutants.
出处
《精细化工》
CAS
CSCD
北大核心
2013年第9期993-996,1002,共5页
Fine Chemicals
关键词
有序介孔有机硅
Β-环糊精
吸附
功能材料
periodic mesoporous organosiliea
β-eyclodextrin
adsorption
functional materials
