Silver ion modified anionic surfactant templated mesoporous silica adsorption materials for the removal of dimethyl sulfide at ambient temperature

摘要

Silver ion modified mesoporous silica (Ag-AMS-2) was prepared by using N-lauroyl-L-glutamic acid as structure directing agents and applied to dimethly sulfide (DMS) removal at ambient temperatures. The silver ion interacted with the amino group through coordination bonds and then the silver ion were as the adsorptive sites of the DMS. These Ag-AMS-2 materials were characterized by X-ray diffraction (XRD), nitrogen adsorption desorption, high-resolution transmission electron microscopy (HRTEM), thermal analysis and inductively coupled plasma optical emission spectrometry (ICP-OES). The performance of these Ag-AMS-2 materials as DMS adsorbents was tested using a dynamic breakthrough test. And these samples showed high removal efficiency and high saturation adsorption capacity of DMS.