摘要
采用壳聚糖-银络合物对钠基蒙脱土进行改性,合成壳聚糖-银/蒙脱土纳米中间体,研究了Ag-NO3浓度、振荡吸附时间对壳聚糖-银络合物合成的影响,用原子吸收分光光度计测Ag(I)含量可达25.8 mg/g.C ts,以及反应温度、反应配比、反应时间对蒙脱土插层效果的影响.用XRD、FTIR及TG-DTA对合成的壳聚糖-银/蒙脱土复合物进行了表征,结果表明C ts-Ag络合物已进入了蒙脱土层间,层间距高达5.732 nm,且C ts-Ag络合物热稳定温度为235℃.
The Na-montmorillonite was modified with chitosan-silver(Cts-Ag) to synthesize chitosan-sil- ver-clay(Cts-Ag/Clay) nanocomposite intermediate. The effects of concentration of AgNO3, vibrating time to the synthesis of the Cts-Ag were studied. The adsorption quantity of silver on ebitosan was up to 25, 8 mg/g ·Cts by atomic absorption spectrophotometer. The effects of reaction temperature, mass ratio of the reactants, reaction time to the synthesis of Cts-Ag/Clay nanocomposite intermediate were studied, The XRD, FTIR, TG-DTA spectrogram showed that ehitosan-silver has been intercalated into the layer of clay. The d-spacing of the prepared Cts-Ag/Clay is up to 5. 732 nm. The thermal stable temperature of Cts-Ag/Clay was 235℃.
出处
《南京师大学报(自然科学版)》
CAS
CSCD
北大核心
2006年第3期45-49,共5页
Journal of Nanjing Normal University(Natural Science Edition)
基金
江苏省科技厅自然科学基金(JH03-013
JHjd03-008)
江苏省教育厅自然科学基金资助项目(04KJB430072)
关键词
壳聚糖-银络合物
壳聚糖-银/蒙脱土复合物
合成
纳米中间体
chitosan-silver(Cts-Ag), chitosan-silver-clay(Cts-Ag,/Clay), compositeness, nanocompositeintermediate
作者简介
刘颖,女,1977-,硕士研究生,主要从事生物医药功能材料合成的学习与研究.E-mail:xuerunjnu@yeah.net
通讯联系人:沈健,1957-,教授,博士生导师,主要从事生物医药功能材料的教学与研究.E-mail:Jshen@njnu.edu.cn