银离子修饰的磺酸硅胶的制备研究

Preparation of Silver Ion Modified Silica Sulfonic Acid

为了制备一种具有硫离子显色反应性的材料,先用氯磺酸对硅胶进行改性,制备磺酸硅胶(SSA),然后SSA的磺酸基通过离子键结合银离子,制备得到银离子修饰的磺酸硅胶(Ag-SSA)。利用傅里叶红外光谱仪(FTIR)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)、等离子体光谱仪(ICP)等测试对实验材料以及产物进行表征。结果表明,磺酸基成功地接枝在硅胶表面,银离子结合在磺酸硅胶表面,Ag-SSA对含硫离子的溶液具有变色反应特征。

For the preparation of a kind of material with sulphion chromogenic reaction,the silica gel was modified by chlorosulfonic acid to prepare silica sulfonic acid(SSA).The sulfonic group of SSA combined with silver ions via the ionic bond,in order to prepare silver ions modify silica sulfonic acid(Ag-SSA).The Fourier infrared spectrometer(FTIR),scanning electron microscope(SEM),X-ray diffractometer(XRD)and inductively coupled plasma spectrometer(ICP)were used to characterize the properties of materials.The research shows that sulfonic group successfully grafted on the silica gel surface,silver ions modified the silica sulfonic acid and the color of Ag-SSA changed after reaction with sulphur ions solution.