摘要
采用水杨醛与壳聚糖反应生成Schiff’s碱,再用NaBH4还原,环氧氯丙烷交联制备壳聚糖衍生物,用FTIR对改性壳聚糖进行表征,并用于2,4-二氯苯酚的吸附研究。测试了改性产物的溶解性能,考察了吸附时间、溶液pH值、酚的浓度以及改性剂用量等因素对氯酚吸附的影响。结果表明,水杨醛改性环氧氯丙烷交联壳聚糖不溶于水、酸和碱;在pH=7、吸附时间为2 h时,对2,4-二氯酚的吸附量为128.2 mg/g。
N-salicyl chitosan was prepared by reducing the Schiff base formed from chitosan and salicylaldehyde. The chitosan derivative was crosslinked and applied for adsorption of 2, 4-chlorophenol. The structure of the crosslinked product was characterized with FTIR. The effects of absorption time, pH value, the concentration of 2, 4-chlorophenol and amount of modified chitosan on the adsorption efficiency of 2,4-chlorophenol were studied. The experimental results indicated that the modified chitosan were insoluble in water, acidic and basic solution. In the solution of pH 7, the adsorption of 2,4-dichlorophenol reaches to 128.2 mg/g in 2 hours.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2007年第1期65-68,共4页
Chemical Industry and Engineering Progress
基金
福建省自然科学基金资助项目(No.E0540001)
关键词
水杨醛
壳聚糖改性
吸附
2
4-二氯酚
salicylaldehyde
chitosanmodified
adsorption
2,4-chlorophenol
