Abstract: Two polymers (I3CAld-Ch-POP and Isatin-Ch-POP) were obtained by imination reaction of chitosan with indole-3-carboxaldehyde and isatin, respectively. Their iodine adsorption performance in KI3 aqueous solution and the structure-activity relationship were investigated. The modification of chitosan with indole-3-carboxaldehyde improved the adsorption effect toward iodine species. After adsorption for 48 h in 3 mL of 100 mg/mL KI3 aqueous solution with 50.0 mg of I3CAld-Ch-POP, the I2 adsorption capacity reached 2.358 g/g, and 80.4% of the I2 adsorption efficiency was maintained after three cycles. The adsorption process of I3CAld-Ch-POP toward iodine species involved both physical adsorption and chemical adsorption. The excellent adsorption and regeneration performance make I3CAld-Ch-POP a potential adsorbent for iodine in aqueous phase.
吕瑞东, 宋璐娜, 安康, 刘星, 秦彦, 杜福娜, 于静文. 吲哚-3-甲醛/靛红改性壳聚糖的碘吸附性能[J]. 吉林化工学院学报, 2026, 43(1): 1-7.
LYU Ruidong, SONG Luna, AN Kang, LIU Xing, QIN Yan, DU Funa, YU Jingwen. Adsorption Performance of Indole-3-Carboxaldehyde/Isatin Modified Chitosan for Iodine. Journal of Jilin Institute of Chemical Technology, 2026, 43(1): 1-7.