摘要
采用微波辐射法制备了戊二醛交联壳聚糖水杨醛希夫碱微球吸附剂.运用傅里叶红外光谱、X射线衍射仪和热重分析仪等表征吸附剂的结构和形貌,研究了吸附剂对金属离子的吸附性能,同时与采用常规水浴合成法加热制备的微球吸附剂进行比较.结果表明:微波辐射法能加快反应的进行,并提高微球吸附剂的产率;傅里叶红外光谱、X射线衍射和热重分析显示产物的结构与预期结构吻合,是壳聚糖接枝交联的结果;同时发现微波辐射法制得的微球吸附剂较为均匀,比表面积增加,且对Pb2+、Cd2+的吸附量显著提高.
Crosslinked chitosan salicylaldehyde Schiff base microspheres were firstly prepared under microwave irradiation, with glutaraldehyde as the crosslinking agent. The structure and morphology of the product were then characterized by means of FT-IR, XRD and TG, etc. Moreover, the adsorption capacities of the product for some metal ions were investigated, and the results were compared with those of the microspheres produced by the traditional water-bath heating method. It is indicated that （1） microwave irradiation remarkably accelerates the reaction and improves the yield ; （2） as illustrated by FT-IR, XRD and TG results, the structure of the product accords well with the expectation due to a successful graft crosslinking of chitosan; and （3） the microsphere adsorbent prepared by means of microwave irradiation is uniform in size and is of an increased specific surface area and an remarkably-increased adsorption capacity for Pb^2＋ and Cd^2＋.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第6期27-30,36,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50673027)
华南理工大学学生研究计划项目(SRP061507)
关键词
壳聚糖
微波辐射
微球
吸附
chitosan
microwave irradiation
microsphere
adsorption
