有机-无机杂化聚离子液体材料制备及其对染料吸附性能的评价

以烯丙基三乙氧基硅烷与1-乙烯基-3-辛基咪唑溴盐离子液体为单体通过自由基聚合及溶胶-凝胶制备了有机-无机杂化聚离子液体材料。通过红外光谱和扫描电镜对所制备的杂化聚离子液体材料进行了表征,并考察了其对柠檬黄、日落黄、苋菜红以及诱惑红等常见染料的吸附性能。研究结果表明:所制备的聚离子液体材料对日落黄和诱惑红具有优异的吸附性能,其吸附容量分别为29.20和86.17 mg/g;当吸附时间为5 min时,该材料对诱惑红和日落黄的吸附分别达到平衡时吸附量的87.5%和72.8%,显示了较快的吸附速率。

Preparation of organic-inorganic hybrid poly(ionic liquids) material and evaluation of the adsorption to dyes

An organic-inorganic hybrid poly(ionic liquids) material was prepared by using allyl triethoxysilane and 1-vinyl-3-octyl imidazolium bromide ionic liquids via combining free radical polymerization with sol-gel process. The prepared hybrid poly(ionic liquids) material was characterized by infrared spectroscopy and scanning electron microscopy. The adsorption properties of the prepared material to common dyes such as tartrazine, sunset yellow, amaranth and allura red were investigated. The results showed that the prepared poly(ionic liquids) material had excellent adsorption properties to sunset yellow and allura red. The adsorption capacities were 29.20 and 86.17 mg/g, respectively. When the adsorption time was 5 min, the material showed a fast adsorption rate to allura red and sunset yellow, which were 87.5% and 72.8% of the balance adsorption capacities, respectively.