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

Abstract

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.

Keywords: adsorption; dyes; hybrid poly(ionic liquid) materials; ionic liquid.