摘要
以壳聚糖(CTS)、聚乙烯吡咯烷酮(PVP)、活性炭(C)为基材,Cu(Ⅱ)为印迹离子,制备了CTS/PVP共混印迹球[Cu(Ⅱ)-IICP]和CTS/PVP/C共混印迹球[Cu(Ⅱ)-IICPC].以Cu(Ⅱ)的吸附量作为评价指标,对两种共混印迹球的制备条件进行了优化.研究结果表明,当CTS/PVP的质量比为6∶4,活性炭质量分数为0.6%,Cu(Ⅱ)模板剂质量分数为0.05%,所制备的两种共混印迹球吸附性能较佳,且对Cu(Ⅱ)有较好的选择吸附性.物理吸附分析结果表明,与未印迹相比印迹材料的比表面积明显增大.FTIR谱图分析,Cu(Ⅱ)模板主要与CTS和PVP中的—NH2和—OH发生了配位作用.XRD谱图分析结果表明,CTS与PVP、C、Cu(Ⅱ)之间发生了相互作用,改变了CTS原有的晶体结构,使其结晶度降低.
Copper（Ⅱ） ion imprinted chitosan（CTS） / polyvinylpyrrolidone（PVP） [Cu（Ⅱ）-IICP] and CTS / PVP / activated carbon（C） [Cu（Ⅱ）-IICPC] were prepared by mixing CTS,PVP,Cu（Ⅱ） and C to form composite material,in which Cu（Ⅱ） was used as a template.The optimal conditions for preparing the composite materials with best adsorption capacity for Cu（Ⅱ） were 6 ∶ 4 for the mass ratio of CTS / PVP,0.6% C,and 0.05% Cu（Ⅱ）.BJH analysis indicates that specific surface area of the ion imprinted material become larger than the non-ion imprinted material.FTIR spectra imply that the template Cu（Ⅱ） is mainly coordinated with the amino group and hydroxyl in CTS and PVP.XRD patterns show that the original crystal structure and crystallinity of CTS changed due to the interaction among CTS,PVP,C,and Cu（Ⅱ）.
出处
《环境化学》
CAS
CSCD
北大核心
2013年第8期1496-1501,共6页
Environmental Chemistry
关键词
壳聚糖
离子印迹
共混
铜离子
吸附
chitosan
ion imprinted polymers
blending
copper
adsorption
