刘源源,刘昕,王萌,黄剑波,许凤,张学铭.果糖基碳微球的制备及其吸附性能研究[J].中国造纸学报,2022,37(1):1-7 |
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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 |
投稿时间:2021-08-11 |
DOI:10.11981/j.issn.1000-6842.2022.01.01 |
中文关键词: 果糖 碳微球 水热碳化 软模板法 吸附 |
Key Words:fructose carbon microsphere hydrothermal carbonization soft template adsorption |
基金项目: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)。 |
作者 | 单位 | 邮编 | 刘源源* | 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 | 100083 | 刘昕 | 清华大学化学工程系,北京,100084 | 100084 | 王萌 | 中国制浆造纸研究院有限公司,北京,100102 | 100102 | 黄剑波 | 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 | 100083 | 许凤 | 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 | 100083 | 张学铭 | 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 | 100083 |
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中文摘要: |
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。 |
Abstract: |
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. |
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