Preparation and Adsorption Properties of Polyacrylamide/Graphene Oxide Composite Aerogel
2020
Yanyan Dong, Wendan Wu, Liping Liang, Shuqi Tao , Xu Meng
Graphene oxide (GO) and acrylamide (AM) were polymerized and cross-linked to form a composite aerogel. The microscopic properties and thermal stability of the composite aerogel were characterized by infrared spectroscopy, thermogravimetric instrument and scanning electron microscopy. The adsorption properties of the composite aerogel were tested. The effects of temperature, GO/AM ratios, pH values, feed amounts, dye liquor concentrations and times on the adsorption properties of composite aerogels were investigated. The results showed that under the same experimental conditions, the more the aerogel dosage and the longer the adsorption time, the better the adsorption performance of the composite aerogel on the active yellow dye liquor; the temperature had little effect on the adsorption of the dye liquor. The gel had the greatest adsorption effect under acidic conditions. The pH was 0.99, the dosage was 0.25g, the concentration of the dye solution was 40mg/L, and the adsorption rate reached 65.51?ter adsorption for 24 hours.
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