| 酰胺功能化修饰琼脂糖/硅胶复合材料的制备及吸附性能研究 |
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| 引用本文： | 张少文,彭传云,吴春来,冯勇,李雪,董小康.酰胺功能化修饰琼脂糖/硅胶复合材料的制备及吸附性能研究[J].人工晶体学报,2020,49(2):331-338. |
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| 作者姓名： | 张少文 彭传云 吴春来 冯勇 李雪 董小康 |
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| 作者单位： | 洛阳理工学院环境工程与化学学院,洛阳 471023;洛阳理工学院环境工程与化学学院,洛阳 471023;洛阳理工学院环境工程与化学学院,洛阳 471023;洛阳理工学院环境工程与化学学院,洛阳 471023;洛阳理工学院环境工程与化学学院,洛阳 471023;洛阳理工学院环境工程与化学学院,洛阳 471023 |
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| 基金项目： | 河南省科技发展计划(1223041346);基础前沿技术研究项目(162300410017);产学研合作项目(152107000090)。 |
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| 摘 要： | 采用溶胶-凝胶法,以氧化琼脂糖和四甲氧基硅烷为前驱体,通过水解、缩聚反应制得琼脂糖/硅胶复合材料,进一步利用开环、"巯-烯"点击和酰胺化反应对复合材料实现酰胺基团功能化修饰.借助红外光谱(FT-IR)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)对所制备复合材料进行结构、组成和微观形貌表征.以制备的酰胺功能化修饰琼脂糖/硅胶复合材料为吸附剂,探讨其对莱克多巴胺的吸附过程,实验考察了溶剂、吸附时间、莱克多巴胺的初始浓度等对吸附的影响.结果表明:经过修饰反应酰胺基团成功接枝到琼脂糖/硅胶复合材料,该材料颗粒呈球形,粒径在2～3μm之间;复合材料对莱克多巴胺表现出良好的吸附性能,吸附过程50 min达到平衡,适合准二级动力学特征,属化学吸附,吸附等温线符合Freundlich模型;复合材料经过6次吸附解析,再生后对莱克多巴胺的吸附率仅有小幅下降,表明具有较好的循环再生吸附能力.
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| 关 键 词： | 琼脂糖/硅胶 复合材料 溶胶凝胶 吸附性能 莱克多巴胺 |
Synthesis and Adsorption Property of Agarose/Silica Composites Functional Modified by Amide Group |
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| ZHANG Shaowen,PENG Chuanyun,WU Chunlai,FENG Yong,LI Xue,DONG Xiaokang.Synthesis and Adsorption Property of Agarose/Silica Composites Functional Modified by Amide Group[J].Journal of Synthetic Crystals,2020,49(2):331-338. |
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| Authors: | ZHANG Shaowen PENG Chuanyun WU Chunlai FENG Yong LI Xue DONG Xiaokang |
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| Affiliation: | (School of Environmental Engineering and Chemistry,Luoyang Institute of Science and Technology,Luoyang 471023,China) |
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| Abstract: | A novel agrose/silica composite was prepared via hydroxylation and poly-condensation reaction in sol-gel process with oxide agrose and tetramethoxysilane as precursor.The agrose/silica composite were functioned with amide through ring opening,“thiol-ene”click and dehydration reactions.The constitution,structure and morphology of the composite were characterized by FT-IR,XPS and SEM.Amide group modified agrose/silica composite was applied as sorbent for ractopamine and several factors such as sample solvent,adsorption time and initial concentrations of ractopamine were investigated.The results show that amide group was successfully modified onto the composite.Meanwhile,continuous porous structure was formed and the particle size was about 2-3μm.The composite show excellent adsorption property for ractopamine.The equilibrium could be reached in 50 min and adsorption behavior belonged to the pseudo-second-order kinetic model.Chemical adsorption was assumed.The adsorption isothermal is in accordance with Freundlich model.The adsorption property decreases a little affter the 6 cycle adsorption experiments. |
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| Keywords: | agrose/silica composite material sol-gel adsorption property ractopamine |
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