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摘要
以废旧棉纤维为原料,K2CO3为活化剂,经预活化和高温碳化制得了棉纤维活性炭。利用扫描电子显微镜(SEM)、傅里叶转变红外光谱仪(FT-IR)、BET比表面积分析仪、X射线衍射仪(XRD)和亚甲基蓝吸附实验对棉纤维活性炭的形貌、结构和染料吸附性能进行了表征。结果表明:当预活化棉与K2CO3质量比为1∶1,碳化温度为820℃时活性炭表面蜂窝状微孔分布均匀且凹陷深,其比表面积高达1778.89m2/g,对亚甲基蓝吸附量594.02mg/g,吸附率达99%,呈现出优异的染料吸附作用,可望在染料废水处理领域广泛应用。
Abstract
Cotton fibers-based activated carbon was prepared by pre-activation and high temperature carbonization with waste cotton fibers as raw material and K2CO3 as activator.The morphology,structure and the dye adsorption property of cotton fibers-based activated carbon were characterized by scanning electron microscopy (SEM),Fourier transform infrared spectroscopy (FT-IR),BET specific surface area analyzer,X-ray diffraction (XRD) and methylene blue adsorption test,respectively.The results showed that,when the mass ratio of pre-activation cotton to K2CO3 was 1∶1 and the carbonization temperature was 820℃,the honeycomb micropores on the surface of activated carbon distributed evenly and deeply concave.In addition,its BET specific surface area,adsorption capacity and adsorption rate on methylene blue were 1778.89m2/g,594.02mg/g,and about 99%,respectively,which exhibited that the cotton fibers-based activated carbon possessed excellent dye adsorption capability and had potential application in dye wastewater treatment.
关键词
废旧棉纤维
/
废水
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碳酸钾
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活性炭
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吸附剂
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亚甲基蓝
Key words
waste cotton fibers
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waste water
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K2CO3
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activated carbon
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absorbents
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methylene blue
棉纤维活性炭吸附剂的制备及其染料吸附性能[J].
化工新型材料, 2022, 50(12): 255-258 DOI:10.19817/j.cnki.issn1006-3536.2022.12.047
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基金资助
江苏省第六期“333高层次人才培养工程”((2022)3-16-216);江苏省大学生创新创业训练计划重点项目(2022041Z)
