果糖基碳微球的制备及其吸附性能研究  

Study on Preparation of Fructose-based Carbon Microspheres and Their Adsorption Properties

作　　者：刘源源 刘昕 王萌 黄剑波 许凤[1] 张学铭[1] LIU Yuanyuan;LIU Xin;WANG Meng;HUANG Jianbo;XU Feng;ZHANG Xueming(Beijing Key Laboratory of Lignocellulosic Chemistry,Beijing Forestry University,Beijing,100083;Department of Chemical Engineering,Tsinghua University,Beijing,100084;China National Pulp and Paper Research Institute Co.,Ltd.,Beijing,100102)

机构地区：[1]北京林业大学林木生物质资源与化学北京市重点实验室,北京100083 [2]清华大学化学工程系,北京100084 [3]中国制浆造纸研究院有限公司,北京100102

出　　处：《中国造纸学报》2022年第1期1-7,共7页Transactions of China Pulp and Paper

基　　金：国家重点研发计划“木质纤维高分子新材料制造技术研究”(2017YFD0601004)。

摘　　要：以果糖为碳前驱体、聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物(Pluronic P123)为模板剂,采用软模板水热碳化法制备果糖碳微球。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)对其形貌进行表征,探究果糖碳微球最佳制备条件,并对其吸附亚甲基蓝的性能及影响因素进行了研究。结果表明,水热碳化时间为6 h时,果糖碳微球尺寸分布均匀,表面光滑。在最佳吸附条件下,果糖碳微球对亚甲基蓝的吸附量可达91.43 mg/g,经5次吸附循环后其吸附量仍为初始吸附量的76.9%,具有良好的循环使用性能;其吸附过程符合准二级吸附动力学,Langmuir等温吸附模型对其吸附过程的拟合更准确,表明亚甲基蓝以单分子层方式吸附于果糖碳微球表面,亚甲基蓝各分子间无相互作用。Fructose-based carbon microspheres were prepared through hydrothermal carbonization using fructose as a carbon precursor and Pluronic P123 as the soft template.The morphology of fructose-based microsphere and optimal preparation conditions were investigated by using scanning electron microscopy(SEM)and transmission electron microscopy(TEM),and the adsorption performance and affecting factors of fructose-based microspheres on methylene blue(MB)were studied as well.The results showed that the fructose-based microspheres possessed uniform size distribution and smooth surface after hydrothermal carbonization of 6 h.Moreover,the highest adsorption capacity of fructose-based microspheres on MB reached up to 91.43 mg/g under the optimal adsorption conditions,and it maintained 76.9%of its maximum adsorption capacity after 5 cycles of use,indicating excellent reusability.Furthermore,it was confirmed that its adsorption kinetics was fitted with pseudo-second-order,and the adsorption isotherm was more conformed to the Langmuir model,which implied that MB was adsorbed on the surface of fructose-based carbon microspheres in a monomolecular manner and there was no interaction between MB molecules.

关 键 词：果糖 碳微球 水热碳化 软模板法 吸附 

分 类 号：TS71[轻工技术与工程—制浆造纸工程]