Environmentally benign removal of pollutant oxyanions by Fe adsorption center in functionalized mesoporous silica

摘要

The specific molecular adsorption sites were built on the pore wall of MCM-41 by means of fixation of ethylenediamine group followed by cationization with Fe~(3+). The iron-anchored surface sites lead to selective adsorptions of arsenate, chromate, selenate and molybdate. The used adsorbent can be regenerated by an environmentally benign process.