化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (6) : 206-212. DOI: 10.19817/j.cnki.issn1006-3536.2023.06.037

科学研究

马来酸酐接枝棉短绒基气凝胶/Fe₃O₄磁性复合碳材料的制备及吸附性能研究

丁成立, 岳盼, 杨宏声, 朱筱, 马雪

作者信息 +

Preparation and adsorption performance of maleic anhydride grafted cotton linter-based aerogel/Fe₃O₄ magnetic composite carbon materials

Ding Chengli, Yue Pan, Yang Hongsheng, Zhu Xiao, Ma Xue

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文章历史 +

Received
2022-02-11
Issue Date	Revised Date
2023-07-07	2022-02-11

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摘要

以棉短绒为原料,马来酸酐(MA)、双氧水接枝改性,制备了棉短绒基气凝胶,然后与纳米Fe₃O₄复合、碳化,合成了MA接枝棉短绒基气凝胶/Fe₃O₄磁性复合碳材料(MFCA-C)。通过扫描电子显微镜、X射线衍射仪、傅里叶变换红外光谱仪、X射线光电子能谱仪、热重分析仪、磁强计、比表面积及孔隙度分析仪对样品进行表征分析。以刚果红(CR)为模型污染物进行了吸附实验。结果表明,MFCA-C具有三维网状结构,比表面积为105m²/g,孔径介于2～50nm之间。吸附过程符合准二级动力学模型和Langmuir等温吸附模型。经过5次循环吸附,MFCA-C对CR的吸附率仍然达到了93.0%。

Abstract

Cotton linter-based aerogel was prepared by grafting modification with maleic anhydride (MA) and hydrogen peroxide using cotton linter as raw material,and then compounded and carbonized with nano-Fe₃O₄ to synthesize MA-grafted cotton linter-based aerogel/Fe₃O₄ magnetic composite carbon material (MFCA-C).The samples were characterized and analyzed by scanning electron microscope (SEM),X-ray powder diffractometer (XRD),Fourier transform infrared spectrometer (FT-IR),X-ray photoelectron spectrometer (XPS),thermogravimeter (TG),vibrating sample magnetometer (VSM) and specific surface area and porosity analyzer (BET).Adsorption experiments were carried out using Congo red (CR) as a model pollutant.The results showed that MFCA-C had a three-dimensional mesh structure with a specific surface area of 105m²/g and pore sizes ranging from 2 to 50nm.The adsorption process was in accordance with the quasi-secondary kinetic model and Langmuir isothermal adsorption model.After five cycles of adsorption,the adsorption efficiency of MFCA-C for CR still reached 93.0%.

关键词

棉短绒 / 马来酸酐 / 磁性 / 活性炭 / 吸附

Key words

cotton linters / maleic anhydride / magnetism / activated carbon / adsorption

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马来酸酐接枝棉短绒基气凝胶/Fe₃O₄磁性复合碳材料的制备及吸附性能研究[J]. 化工新型材料, 2023, 51(6): 206-212 DOI:10.19817/j.cnki.issn1006-3536.2023.06.037

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